./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d7b83251f9a608d2befdac3ab06beaba9889f30d8ab1cb865fc88ebdabcb52dd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:55:08,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:55:08,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:55:08,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:55:08,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:55:08,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:55:08,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:55:08,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:55:08,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:55:08,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:55:08,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:55:08,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:55:08,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:55:08,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:55:08,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:55:08,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:55:08,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:55:08,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:55:08,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:55:08,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:55:08,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:55:08,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:55:08,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:55:08,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:55:08,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:55:08,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:55:08,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:55:08,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:55:08,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:55:08,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:55:08,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:55:08,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:55:08,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:55:08,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:55:08,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:55:08,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:55:08,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:55:08,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:55:08,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:55:08,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:55:08,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:55:08,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:55:08,950 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:55:08,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:55:08,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:55:08,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:55:08,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:55:08,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:55:08,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:55:08,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:55:08,955 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:55:08,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:55:08,956 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:55:08,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:55:08,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:55:08,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:55:08,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:55:08,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:55:08,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:55:08,958 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:55:08,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:55:08,959 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:55:08,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:55:08,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:55:08,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:55:08,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:55:08,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:55:08,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:55:08,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:55:08,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:55:08,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:55:08,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:55:08,962 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:55:08,962 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:55:08,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:55:08,963 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_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b83251f9a608d2befdac3ab06beaba9889f30d8ab1cb865fc88ebdabcb52dd [2022-11-18 19:55:09,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:55:09,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:55:09,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:55:09,343 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:55:09,344 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:55:09,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2022-11-18 19:55:09,464 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/data/3c3ab8eda/a9924955d766460a9cebdd1dd9efb348/FLAGb019d11b1 [2022-11-18 19:55:10,101 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:55:10,102 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2022-11-18 19:55:10,122 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/data/3c3ab8eda/a9924955d766460a9cebdd1dd9efb348/FLAGb019d11b1 [2022-11-18 19:55:10,391 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/data/3c3ab8eda/a9924955d766460a9cebdd1dd9efb348 [2022-11-18 19:55:10,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:55:10,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:55:10,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:55:10,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:55:10,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:55:10,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:55:10" (1/1) ... [2022-11-18 19:55:10,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c7deb72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:10, skipping insertion in model container [2022-11-18 19:55:10,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:55:10" (1/1) ... [2022-11-18 19:55:10,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:55:10,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:55:10,688 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[914,927] [2022-11-18 19:55:10,751 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[7115,7128] [2022-11-18 19:55:10,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:55:10,845 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:55:10,867 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[914,927] [2022-11-18 19:55:10,890 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[7115,7128] [2022-11-18 19:55:10,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:55:10,967 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:55:10,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:10 WrapperNode [2022-11-18 19:55:10,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:55:10,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:55:10,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:55:10,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:55:10,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:10" (1/1) ... [2022-11-18 19:55:11,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:10" (1/1) ... [2022-11-18 19:55:11,100 INFO L138 Inliner]: procedures = 67, calls = 79, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 755 [2022-11-18 19:55:11,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:55:11,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:55:11,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:55:11,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:55:11,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:10" (1/1) ... [2022-11-18 19:55:11,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:10" (1/1) ... [2022-11-18 19:55:11,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:10" (1/1) ... [2022-11-18 19:55:11,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:10" (1/1) ... [2022-11-18 19:55:11,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:10" (1/1) ... [2022-11-18 19:55:11,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:10" (1/1) ... [2022-11-18 19:55:11,168 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:10" (1/1) ... [2022-11-18 19:55:11,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:10" (1/1) ... [2022-11-18 19:55:11,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:55:11,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:55:11,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:55:11,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:55:11,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:10" (1/1) ... [2022-11-18 19:55:11,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:55:11,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:11,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:55:11,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:55:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:55:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-18 19:55:11,295 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-18 19:55:11,295 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-18 19:55:11,295 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-18 19:55:11,295 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-18 19:55:11,295 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-18 19:55:11,295 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-18 19:55:11,296 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-18 19:55:11,296 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-18 19:55:11,296 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-18 19:55:11,296 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-18 19:55:11,296 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-18 19:55:11,296 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-18 19:55:11,297 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-18 19:55:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-18 19:55:11,297 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-18 19:55:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-18 19:55:11,297 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-18 19:55:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-18 19:55:11,298 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-18 19:55:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-18 19:55:11,298 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-18 19:55:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:55:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-18 19:55:11,299 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-18 19:55:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-18 19:55:11,299 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-18 19:55:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:55:11,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:55:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-18 19:55:11,300 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-18 19:55:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-11-18 19:55:11,300 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-11-18 19:55:11,440 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:55:11,443 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:55:12,546 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:55:12,560 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:55:12,560 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-18 19:55:12,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:55:12 BoogieIcfgContainer [2022-11-18 19:55:12,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:55:12,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:55:12,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:55:12,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:55:12,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:55:10" (1/3) ... [2022-11-18 19:55:12,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e1ad88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:55:12, skipping insertion in model container [2022-11-18 19:55:12,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:10" (2/3) ... [2022-11-18 19:55:12,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e1ad88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:55:12, skipping insertion in model container [2022-11-18 19:55:12,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:55:12" (3/3) ... [2022-11-18 19:55:12,575 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2022-11-18 19:55:12,599 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:55:12,599 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 19:55:12,710 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:55:12,729 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;@23378bad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:55:12,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 19:55:12,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 366 states, 311 states have (on average 1.6205787781350482) internal successors, (504), 319 states have internal predecessors, (504), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-18 19:55:12,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:55:12,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:12,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:12,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:12,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:12,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1360309696, now seen corresponding path program 1 times [2022-11-18 19:55:12,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:12,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541166011] [2022-11-18 19:55:12,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:12,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:13,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:13,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:13,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:13,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:13,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:55:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:13,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:55:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:13,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:55:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:13,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:13,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541166011] [2022-11-18 19:55:13,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541166011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:13,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:13,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:55:13,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737150734] [2022-11-18 19:55:13,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:13,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:55:13,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:13,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:55:13,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:55:13,376 INFO L87 Difference]: Start difference. First operand has 366 states, 311 states have (on average 1.6205787781350482) internal successors, (504), 319 states have internal predecessors, (504), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:55:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:14,621 INFO L93 Difference]: Finished difference Result 727 states and 1147 transitions. [2022-11-18 19:55:14,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:55:14,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 19:55:14,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:14,655 INFO L225 Difference]: With dead ends: 727 [2022-11-18 19:55:14,658 INFO L226 Difference]: Without dead ends: 373 [2022-11-18 19:55:14,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:55:14,675 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 553 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:14,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 1269 Invalid, 693 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:55:14,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-11-18 19:55:14,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 355. [2022-11-18 19:55:14,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 303 states have (on average 1.528052805280528) internal successors, (463), 308 states have internal predecessors, (463), 37 states have call successors, (37), 15 states have call predecessors, (37), 13 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-18 19:55:14,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 533 transitions. [2022-11-18 19:55:14,828 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 533 transitions. Word has length 65 [2022-11-18 19:55:14,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:14,829 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 533 transitions. [2022-11-18 19:55:14,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:55:14,831 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 533 transitions. [2022-11-18 19:55:14,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:55:14,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:14,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:14,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:55:14,850 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:14,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:14,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1400984446, now seen corresponding path program 1 times [2022-11-18 19:55:14,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:14,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976926575] [2022-11-18 19:55:14,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:14,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:15,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:15,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:15,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:15,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:15,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:55:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:15,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:55:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:15,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:55:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:15,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:15,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:15,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976926575] [2022-11-18 19:55:15,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976926575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:15,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:15,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:55:15,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071054072] [2022-11-18 19:55:15,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:15,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:55:15,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:15,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:55:15,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:55:15,281 INFO L87 Difference]: Start difference. First operand 355 states and 533 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:55:16,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:16,676 INFO L93 Difference]: Finished difference Result 578 states and 847 transitions. [2022-11-18 19:55:16,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:55:16,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 19:55:16,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:16,686 INFO L225 Difference]: With dead ends: 578 [2022-11-18 19:55:16,687 INFO L226 Difference]: Without dead ends: 490 [2022-11-18 19:55:16,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:55:16,692 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 912 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:16,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1311 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:55:16,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-11-18 19:55:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 451. [2022-11-18 19:55:16,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 379 states have (on average 1.4960422163588392) internal successors, (567), 386 states have internal predecessors, (567), 48 states have call successors, (48), 22 states have call predecessors, (48), 22 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-11-18 19:55:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 664 transitions. [2022-11-18 19:55:16,753 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 664 transitions. Word has length 65 [2022-11-18 19:55:16,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:16,753 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 664 transitions. [2022-11-18 19:55:16,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:55:16,754 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 664 transitions. [2022-11-18 19:55:16,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:55:16,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:16,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:16,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:55:16,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:16,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:16,758 INFO L85 PathProgramCache]: Analyzing trace with hash -997198495, now seen corresponding path program 1 times [2022-11-18 19:55:16,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:16,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709657510] [2022-11-18 19:55:16,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:16,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:16,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:16,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:16,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:16,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:16,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:55:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:17,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:55:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:17,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:55:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:17,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:17,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709657510] [2022-11-18 19:55:17,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709657510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:17,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:17,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:55:17,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926894256] [2022-11-18 19:55:17,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:17,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:55:17,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:17,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:55:17,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:55:17,028 INFO L87 Difference]: Start difference. First operand 451 states and 664 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:55:18,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:18,575 INFO L93 Difference]: Finished difference Result 798 states and 1140 transitions. [2022-11-18 19:55:18,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:55:18,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 19:55:18,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:18,581 INFO L225 Difference]: With dead ends: 798 [2022-11-18 19:55:18,581 INFO L226 Difference]: Without dead ends: 621 [2022-11-18 19:55:18,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:55:18,584 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1097 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:18,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1829 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:55:18,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-11-18 19:55:18,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 547. [2022-11-18 19:55:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 455 states have (on average 1.4725274725274726) internal successors, (670), 464 states have internal predecessors, (670), 59 states have call successors, (59), 29 states have call predecessors, (59), 31 states have return successors, (68), 57 states have call predecessors, (68), 55 states have call successors, (68) [2022-11-18 19:55:18,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 797 transitions. [2022-11-18 19:55:18,658 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 797 transitions. Word has length 65 [2022-11-18 19:55:18,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:18,659 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 797 transitions. [2022-11-18 19:55:18,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:55:18,660 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 797 transitions. [2022-11-18 19:55:18,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:55:18,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:18,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:18,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:55:18,663 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:18,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:18,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1269182691, now seen corresponding path program 1 times [2022-11-18 19:55:18,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:18,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868938515] [2022-11-18 19:55:18,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:18,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:55:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:55:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:55:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:18,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:18,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868938515] [2022-11-18 19:55:18,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868938515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:18,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:18,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:55:18,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44062149] [2022-11-18 19:55:18,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:18,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:55:18,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:18,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:55:18,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:55:18,841 INFO L87 Difference]: Start difference. First operand 547 states and 797 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:55:20,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:20,298 INFO L93 Difference]: Finished difference Result 874 states and 1251 transitions. [2022-11-18 19:55:20,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:55:20,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-18 19:55:20,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:20,321 INFO L225 Difference]: With dead ends: 874 [2022-11-18 19:55:20,322 INFO L226 Difference]: Without dead ends: 607 [2022-11-18 19:55:20,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:55:20,330 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 681 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:20,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1893 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:55:20,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-11-18 19:55:20,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 562. [2022-11-18 19:55:20,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 467 states have (on average 1.4603854389721627) internal successors, (682), 476 states have internal predecessors, (682), 59 states have call successors, (59), 29 states have call predecessors, (59), 34 states have return successors, (71), 60 states have call predecessors, (71), 55 states have call successors, (71) [2022-11-18 19:55:20,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 812 transitions. [2022-11-18 19:55:20,388 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 812 transitions. Word has length 65 [2022-11-18 19:55:20,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:20,389 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 812 transitions. [2022-11-18 19:55:20,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:55:20,389 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 812 transitions. [2022-11-18 19:55:20,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:55:20,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:20,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:20,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:55:20,392 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:20,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:20,393 INFO L85 PathProgramCache]: Analyzing trace with hash -117020703, now seen corresponding path program 1 times [2022-11-18 19:55:20,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:20,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064417449] [2022-11-18 19:55:20,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:20,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:20,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:20,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:20,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:20,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:20,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:55:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:20,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:55:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:20,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:55:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:20,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:20,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:20,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064417449] [2022-11-18 19:55:20,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064417449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:20,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:20,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:55:20,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024453657] [2022-11-18 19:55:20,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:20,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:55:20,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:20,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:55:20,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:55:20,696 INFO L87 Difference]: Start difference. First operand 562 states and 812 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:55:22,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:22,336 INFO L93 Difference]: Finished difference Result 880 states and 1244 transitions. [2022-11-18 19:55:22,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:55:22,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-18 19:55:22,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:22,342 INFO L225 Difference]: With dead ends: 880 [2022-11-18 19:55:22,342 INFO L226 Difference]: Without dead ends: 598 [2022-11-18 19:55:22,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:55:22,347 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 678 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:22,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 1892 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 19:55:22,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-11-18 19:55:22,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 567. [2022-11-18 19:55:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 471 states have (on average 1.4522292993630572) internal successors, (684), 480 states have internal predecessors, (684), 59 states have call successors, (59), 29 states have call predecessors, (59), 35 states have return successors, (72), 61 states have call predecessors, (72), 55 states have call successors, (72) [2022-11-18 19:55:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 815 transitions. [2022-11-18 19:55:22,403 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 815 transitions. Word has length 65 [2022-11-18 19:55:22,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:22,404 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 815 transitions. [2022-11-18 19:55:22,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:55:22,405 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 815 transitions. [2022-11-18 19:55:22,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:55:22,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:22,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:22,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:55:22,407 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:22,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:22,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1146380001, now seen corresponding path program 1 times [2022-11-18 19:55:22,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:22,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405402990] [2022-11-18 19:55:22,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:22,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:22,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:22,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:22,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:22,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:22,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:55:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:22,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:55:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:22,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:55:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:22,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:22,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:22,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405402990] [2022-11-18 19:55:22,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405402990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:22,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:22,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 19:55:22,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218599103] [2022-11-18 19:55:22,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:22,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:55:22,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:22,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:55:22,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:55:22,660 INFO L87 Difference]: Start difference. First operand 567 states and 815 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 19:55:25,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:25,338 INFO L93 Difference]: Finished difference Result 1923 states and 2656 transitions. [2022-11-18 19:55:25,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:55:25,341 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-11-18 19:55:25,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:25,349 INFO L225 Difference]: With dead ends: 1923 [2022-11-18 19:55:25,350 INFO L226 Difference]: Without dead ends: 1618 [2022-11-18 19:55:25,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:55:25,353 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 3142 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3157 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:25,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3157 Valid, 1788 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 19:55:25,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2022-11-18 19:55:25,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1483. [2022-11-18 19:55:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1198 states have (on average 1.3664440734557597) internal successors, (1637), 1222 states have internal predecessors, (1637), 147 states have call successors, (147), 112 states have call predecessors, (147), 136 states have return successors, (189), 151 states have call predecessors, (189), 143 states have call successors, (189) [2022-11-18 19:55:25,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 1973 transitions. [2022-11-18 19:55:25,506 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 1973 transitions. Word has length 65 [2022-11-18 19:55:25,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:25,507 INFO L495 AbstractCegarLoop]: Abstraction has 1483 states and 1973 transitions. [2022-11-18 19:55:25,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 19:55:25,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 1973 transitions. [2022-11-18 19:55:25,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:55:25,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:25,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:25,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:55:25,509 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:25,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:25,510 INFO L85 PathProgramCache]: Analyzing trace with hash -166967177, now seen corresponding path program 1 times [2022-11-18 19:55:25,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:25,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316161374] [2022-11-18 19:55:25,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:25,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:25,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:25,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:25,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:25,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:25,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:55:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:25,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:55:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:25,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:55:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:25,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:25,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316161374] [2022-11-18 19:55:25,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316161374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:25,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:25,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:55:25,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737707960] [2022-11-18 19:55:25,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:25,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:55:25,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:25,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:55:25,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:55:25,746 INFO L87 Difference]: Start difference. First operand 1483 states and 1973 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:55:27,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:27,408 INFO L93 Difference]: Finished difference Result 2762 states and 3559 transitions. [2022-11-18 19:55:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:55:27,409 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 19:55:27,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:27,419 INFO L225 Difference]: With dead ends: 2762 [2022-11-18 19:55:27,420 INFO L226 Difference]: Without dead ends: 1770 [2022-11-18 19:55:27,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:55:27,424 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1048 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:27,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 1575 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 19:55:27,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2022-11-18 19:55:27,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1425. [2022-11-18 19:55:27,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1156 states have (on average 1.3624567474048443) internal successors, (1575), 1175 states have internal predecessors, (1575), 141 states have call successors, (141), 107 states have call predecessors, (141), 126 states have return successors, (174), 144 states have call predecessors, (174), 137 states have call successors, (174) [2022-11-18 19:55:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1890 transitions. [2022-11-18 19:55:27,545 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1890 transitions. Word has length 65 [2022-11-18 19:55:27,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:27,546 INFO L495 AbstractCegarLoop]: Abstraction has 1425 states and 1890 transitions. [2022-11-18 19:55:27,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:55:27,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1890 transitions. [2022-11-18 19:55:27,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:55:27,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:27,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:27,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:55:27,549 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:27,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:27,550 INFO L85 PathProgramCache]: Analyzing trace with hash -300980683, now seen corresponding path program 1 times [2022-11-18 19:55:27,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:27,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928314903] [2022-11-18 19:55:27,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:27,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:27,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:27,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:27,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:27,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:27,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:55:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:27,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:55:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:55:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:27,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:27,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928314903] [2022-11-18 19:55:27,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928314903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:27,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:27,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:27,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169110196] [2022-11-18 19:55:27,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:27,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:27,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:27,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:27,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:27,706 INFO L87 Difference]: Start difference. First operand 1425 states and 1890 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:55:28,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:28,798 INFO L93 Difference]: Finished difference Result 3787 states and 4887 transitions. [2022-11-18 19:55:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:55:28,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 19:55:28,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:28,814 INFO L225 Difference]: With dead ends: 3787 [2022-11-18 19:55:28,814 INFO L226 Difference]: Without dead ends: 2631 [2022-11-18 19:55:28,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:55:28,819 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1540 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:28,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1568 Valid, 817 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:55:28,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2022-11-18 19:55:29,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2483. [2022-11-18 19:55:29,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 1974 states have (on average 1.3034447821681865) internal successors, (2573), 2009 states have internal predecessors, (2573), 257 states have call successors, (257), 206 states have call predecessors, (257), 250 states have return successors, (362), 269 states have call predecessors, (362), 253 states have call successors, (362) [2022-11-18 19:55:29,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3192 transitions. [2022-11-18 19:55:29,083 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3192 transitions. Word has length 65 [2022-11-18 19:55:29,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:29,085 INFO L495 AbstractCegarLoop]: Abstraction has 2483 states and 3192 transitions. [2022-11-18 19:55:29,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:55:29,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3192 transitions. [2022-11-18 19:55:29,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:55:29,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:29,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:29,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:55:29,088 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:29,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:29,089 INFO L85 PathProgramCache]: Analyzing trace with hash -57595364, now seen corresponding path program 1 times [2022-11-18 19:55:29,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:29,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752879065] [2022-11-18 19:55:29,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:29,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:29,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:29,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:29,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:29,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:55:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:29,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:55:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:29,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:55:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:29,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:29,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752879065] [2022-11-18 19:55:29,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752879065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:29,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:29,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:55:29,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539660299] [2022-11-18 19:55:29,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:29,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:55:29,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:29,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:55:29,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:55:29,216 INFO L87 Difference]: Start difference. First operand 2483 states and 3192 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:55:30,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:30,464 INFO L93 Difference]: Finished difference Result 5763 states and 7313 transitions. [2022-11-18 19:55:30,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:55:30,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-18 19:55:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:30,486 INFO L225 Difference]: With dead ends: 5763 [2022-11-18 19:55:30,487 INFO L226 Difference]: Without dead ends: 3549 [2022-11-18 19:55:30,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:55:30,495 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 886 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:30,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 1045 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:55:30,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3549 states. [2022-11-18 19:55:30,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3549 to 3253. [2022-11-18 19:55:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3253 states, 2573 states have (on average 1.2883793237465992) internal successors, (3315), 2613 states have internal predecessors, (3315), 341 states have call successors, (341), 279 states have call predecessors, (341), 337 states have return successors, (466), 362 states have call predecessors, (466), 337 states have call successors, (466) [2022-11-18 19:55:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3253 states to 3253 states and 4122 transitions. [2022-11-18 19:55:30,839 INFO L78 Accepts]: Start accepts. Automaton has 3253 states and 4122 transitions. Word has length 66 [2022-11-18 19:55:30,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:30,839 INFO L495 AbstractCegarLoop]: Abstraction has 3253 states and 4122 transitions. [2022-11-18 19:55:30,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:55:30,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3253 states and 4122 transitions. [2022-11-18 19:55:30,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 19:55:30,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:30,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:30,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:55:30,842 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:30,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:30,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1644831941, now seen corresponding path program 1 times [2022-11-18 19:55:30,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:30,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042537619] [2022-11-18 19:55:30,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:30,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:30,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:30,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:30,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:30,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:30,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:55:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:30,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:55:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:30,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:55:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:30,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:30,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:30,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042537619] [2022-11-18 19:55:30,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042537619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:30,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:30,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:55:30,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864669427] [2022-11-18 19:55:30,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:30,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:55:30,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:30,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:55:30,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:55:30,949 INFO L87 Difference]: Start difference. First operand 3253 states and 4122 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:55:32,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:32,031 INFO L93 Difference]: Finished difference Result 6797 states and 8495 transitions. [2022-11-18 19:55:32,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:55:32,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-18 19:55:32,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:32,054 INFO L225 Difference]: With dead ends: 6797 [2022-11-18 19:55:32,055 INFO L226 Difference]: Without dead ends: 3812 [2022-11-18 19:55:32,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:55:32,066 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 1228 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:32,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 870 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:55:32,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3812 states. [2022-11-18 19:55:32,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3812 to 3531. [2022-11-18 19:55:32,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3531 states, 2794 states have (on average 1.280959198282033) internal successors, (3579), 2836 states have internal predecessors, (3579), 369 states have call successors, (369), 304 states have call predecessors, (369), 366 states have return successors, (498), 392 states have call predecessors, (498), 365 states have call successors, (498) [2022-11-18 19:55:32,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3531 states to 3531 states and 4446 transitions. [2022-11-18 19:55:32,450 INFO L78 Accepts]: Start accepts. Automaton has 3531 states and 4446 transitions. Word has length 72 [2022-11-18 19:55:32,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:32,452 INFO L495 AbstractCegarLoop]: Abstraction has 3531 states and 4446 transitions. [2022-11-18 19:55:32,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:55:32,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3531 states and 4446 transitions. [2022-11-18 19:55:32,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 19:55:32,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:32,454 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:32,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:55:32,454 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:32,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:32,455 INFO L85 PathProgramCache]: Analyzing trace with hash 33226707, now seen corresponding path program 1 times [2022-11-18 19:55:32,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:32,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270985664] [2022-11-18 19:55:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:32,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:32,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:32,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:32,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:32,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:32,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:55:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:32,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:55:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:32,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:55:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:32,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:32,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270985664] [2022-11-18 19:55:32,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270985664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:32,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:32,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:32,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655446072] [2022-11-18 19:55:32,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:32,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:32,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:32,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:32,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:32,584 INFO L87 Difference]: Start difference. First operand 3531 states and 4446 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 19:55:33,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:33,816 INFO L93 Difference]: Finished difference Result 4630 states and 5757 transitions. [2022-11-18 19:55:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:55:33,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-11-18 19:55:33,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:33,841 INFO L225 Difference]: With dead ends: 4630 [2022-11-18 19:55:33,841 INFO L226 Difference]: Without dead ends: 4627 [2022-11-18 19:55:33,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:55:33,844 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 1737 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:33,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1747 Valid, 848 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:55:33,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-11-18 19:55:34,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 3993. [2022-11-18 19:55:34,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3993 states, 3149 states have (on average 1.2696093998094633) internal successors, (3998), 3194 states have internal predecessors, (3998), 419 states have call successors, (419), 348 states have call predecessors, (419), 423 states have return successors, (575), 452 states have call predecessors, (575), 416 states have call successors, (575) [2022-11-18 19:55:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3993 states to 3993 states and 4992 transitions. [2022-11-18 19:55:34,306 INFO L78 Accepts]: Start accepts. Automaton has 3993 states and 4992 transitions. Word has length 73 [2022-11-18 19:55:34,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:34,307 INFO L495 AbstractCegarLoop]: Abstraction has 3993 states and 4992 transitions. [2022-11-18 19:55:34,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 19:55:34,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3993 states and 4992 transitions. [2022-11-18 19:55:34,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 19:55:34,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:34,309 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:34,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:55:34,310 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:34,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:34,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1028933253, now seen corresponding path program 1 times [2022-11-18 19:55:34,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:34,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754130447] [2022-11-18 19:55:34,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:34,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:55:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:55:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:55:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:34,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:34,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754130447] [2022-11-18 19:55:34,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754130447] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:34,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31926572] [2022-11-18 19:55:34,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:34,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:34,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:34,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:34,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:55:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:55:34,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:35,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:35,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:35,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31926572] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:35,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:55:35,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-11-18 19:55:35,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607101731] [2022-11-18 19:55:35,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:35,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:55:35,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:35,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:55:35,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:55:35,304 INFO L87 Difference]: Start difference. First operand 3993 states and 4992 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-18 19:55:38,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:38,016 INFO L93 Difference]: Finished difference Result 8338 states and 10243 transitions. [2022-11-18 19:55:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 19:55:38,017 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-11-18 19:55:38,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:38,054 INFO L225 Difference]: With dead ends: 8338 [2022-11-18 19:55:38,054 INFO L226 Difference]: Without dead ends: 8335 [2022-11-18 19:55:38,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:55:38,059 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1417 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 2408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:38,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 2299 Invalid, 2408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2236 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 19:55:38,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8335 states. [2022-11-18 19:55:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8335 to 7410. [2022-11-18 19:55:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7410 states, 5824 states have (on average 1.2520604395604396) internal successors, (7292), 5904 states have internal predecessors, (7292), 778 states have call successors, (778), 662 states have call predecessors, (778), 806 states have return successors, (1076), 845 states have call predecessors, (1076), 775 states have call successors, (1076) [2022-11-18 19:55:38,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7410 states to 7410 states and 9146 transitions. [2022-11-18 19:55:38,875 INFO L78 Accepts]: Start accepts. Automaton has 7410 states and 9146 transitions. Word has length 74 [2022-11-18 19:55:38,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:38,875 INFO L495 AbstractCegarLoop]: Abstraction has 7410 states and 9146 transitions. [2022-11-18 19:55:38,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-18 19:55:38,877 INFO L276 IsEmpty]: Start isEmpty. Operand 7410 states and 9146 transitions. [2022-11-18 19:55:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 19:55:38,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:38,878 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:38,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:39,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00b9967-c923-4a1b-821c-cf9a6452fa91/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:39,085 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:39,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:39,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1516349741, now seen corresponding path program 2 times [2022-11-18 19:55:39,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:39,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978498805] [2022-11-18 19:55:39,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:39,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:39,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:39,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:39,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:39,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:39,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:55:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:39,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:55:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:39,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:55:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:39,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:39,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978498805] [2022-11-18 19:55:39,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978498805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:39,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:39,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:55:39,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518925093] [2022-11-18 19:55:39,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:39,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:55:39,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:39,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:55:39,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:55:39,177 INFO L87 Difference]: Start difference. First operand 7410 states and 9146 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 19:55:40,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:40,418 INFO L93 Difference]: Finished difference Result 10011 states and 12368 transitions. [2022-11-18 19:55:40,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:55:40,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-11-18 19:55:40,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:40,435 INFO L225 Difference]: With dead ends: 10011 [2022-11-18 19:55:40,436 INFO L226 Difference]: Without dead ends: 3837 [2022-11-18 19:55:40,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:55:40,449 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 939 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:40,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 1159 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:55:40,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2022-11-18 19:55:40,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 2844. [2022-11-18 19:55:40,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2262 states have (on average 1.259946949602122) internal successors, (2850), 2288 states have internal predecessors, (2850), 298 states have call successors, (298), 245 states have call predecessors, (298), 282 states have return successors, (377), 312 states have call predecessors, (377), 295 states have call successors, (377) [2022-11-18 19:55:40,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 3525 transitions. [2022-11-18 19:55:40,776 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 3525 transitions. Word has length 77 [2022-11-18 19:55:40,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:40,776 INFO L495 AbstractCegarLoop]: Abstraction has 2844 states and 3525 transitions. [2022-11-18 19:55:40,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 19:55:40,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 3525 transitions. [2022-11-18 19:55:40,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-18 19:55:40,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:40,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:40,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:55:40,779 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:40,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:40,780 INFO L85 PathProgramCache]: Analyzing trace with hash 522255415, now seen corresponding path program 1 times [2022-11-18 19:55:40,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:40,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184090432] [2022-11-18 19:55:40,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:40,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:40,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:40,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:40,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:40,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:40,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:55:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:55:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:40,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:55:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:40,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 19:55:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:55:40,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:40,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184090432] [2022-11-18 19:55:40,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184090432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:40,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:40,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:55:40,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966343676] [2022-11-18 19:55:40,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:40,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:55:40,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:40,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:55:40,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:55:40,915 INFO L87 Difference]: Start difference. First operand 2844 states and 3525 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:55:42,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:42,625 INFO L93 Difference]: Finished difference Result 8040 states and 9826 transitions. [2022-11-18 19:55:42,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:55:42,626 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-11-18 19:55:42,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:42,654 INFO L225 Difference]: With dead ends: 8040 [2022-11-18 19:55:42,655 INFO L226 Difference]: Without dead ends: 5465 [2022-11-18 19:55:42,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:55:42,661 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 949 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:42,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 1924 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:55:42,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5465 states. [2022-11-18 19:55:43,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5465 to 5158. [2022-11-18 19:55:43,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 4010 states have (on average 1.2231920199501247) internal successors, (4905), 4110 states have internal predecessors, (4905), 565 states have call successors, (565), 473 states have call predecessors, (565), 581 states have return successors, (822), 577 states have call predecessors, (822), 562 states have call successors, (822) [2022-11-18 19:55:43,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 6292 transitions. [2022-11-18 19:55:43,235 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 6292 transitions. Word has length 84 [2022-11-18 19:55:43,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:43,236 INFO L495 AbstractCegarLoop]: Abstraction has 5158 states and 6292 transitions. [2022-11-18 19:55:43,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:55:43,236 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 6292 transitions. [2022-11-18 19:55:43,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 19:55:43,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:43,240 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:43,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:55:43,241 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:43,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:43,241 INFO L85 PathProgramCache]: Analyzing trace with hash -315104239, now seen corresponding path program 1 times [2022-11-18 19:55:43,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:43,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687406244] [2022-11-18 19:55:43,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:43,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:43,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:43,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:43,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:43,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:43,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:55:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:55:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:43,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:55:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:43,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:55:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:55:43,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:43,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687406244] [2022-11-18 19:55:43,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687406244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:43,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:43,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:55:43,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463668598] [2022-11-18 19:55:43,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:43,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:55:43,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:43,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:55:43,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:55:43,397 INFO L87 Difference]: Start difference. First operand 5158 states and 6292 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:55:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:45,180 INFO L93 Difference]: Finished difference Result 8060 states and 9812 transitions. [2022-11-18 19:55:45,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:55:45,181 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-11-18 19:55:45,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:45,196 INFO L225 Difference]: With dead ends: 8060 [2022-11-18 19:55:45,197 INFO L226 Difference]: Without dead ends: 3762 [2022-11-18 19:55:45,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:55:45,206 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 1894 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:45,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1928 Valid, 1397 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:55:45,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2022-11-18 19:55:45,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 3393. [2022-11-18 19:55:45,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 2640 states have (on average 1.2166666666666666) internal successors, (3212), 2711 states have internal predecessors, (3212), 367 states have call successors, (367), 300 states have call predecessors, (367), 384 states have return successors, (507), 384 states have call predecessors, (507), 364 states have call successors, (507) [2022-11-18 19:55:45,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 4086 transitions. [2022-11-18 19:55:45,724 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 4086 transitions. Word has length 93 [2022-11-18 19:55:45,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:45,724 INFO L495 AbstractCegarLoop]: Abstraction has 3393 states and 4086 transitions. [2022-11-18 19:55:45,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:55:45,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 4086 transitions. [2022-11-18 19:55:45,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:55:45,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:45,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:45,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:55:45,729 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:45,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:45,730 INFO L85 PathProgramCache]: Analyzing trace with hash -909909463, now seen corresponding path program 1 times [2022-11-18 19:55:45,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:45,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70117551] [2022-11-18 19:55:45,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:45,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:45,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:45,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:45,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:55:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:45,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:55:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:45,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:55:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:45,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:45,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70117551] [2022-11-18 19:55:45,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70117551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:45,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:45,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:55:45,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969110456] [2022-11-18 19:55:45,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:45,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:55:45,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:45,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:55:45,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:55:45,875 INFO L87 Difference]: Start difference. First operand 3393 states and 4086 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:55:47,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:47,631 INFO L93 Difference]: Finished difference Result 3730 states and 4624 transitions. [2022-11-18 19:55:47,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:55:47,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:55:47,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:47,645 INFO L225 Difference]: With dead ends: 3730 [2022-11-18 19:55:47,645 INFO L226 Difference]: Without dead ends: 3480 [2022-11-18 19:55:47,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:55:47,649 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 772 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:47,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 765 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:55:47,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2022-11-18 19:55:48,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3393. [2022-11-18 19:55:48,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 2640 states have (on average 1.2162878787878788) internal successors, (3211), 2711 states have internal predecessors, (3211), 367 states have call successors, (367), 300 states have call predecessors, (367), 384 states have return successors, (507), 384 states have call predecessors, (507), 364 states have call successors, (507) [2022-11-18 19:55:48,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 4085 transitions. [2022-11-18 19:55:48,195 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 4085 transitions. Word has length 124 [2022-11-18 19:55:48,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:48,196 INFO L495 AbstractCegarLoop]: Abstraction has 3393 states and 4085 transitions. [2022-11-18 19:55:48,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:55:48,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 4085 transitions. [2022-11-18 19:55:48,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:55:48,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:48,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:48,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:55:48,200 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:48,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:48,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1657912871, now seen corresponding path program 1 times [2022-11-18 19:55:48,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:48,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821549408] [2022-11-18 19:55:48,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:48,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:48,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:48,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:48,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:55:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:48,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:55:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:48,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:55:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:48,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:48,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821549408] [2022-11-18 19:55:48,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821549408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:48,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:48,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:55:48,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725872245] [2022-11-18 19:55:48,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:48,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:55:48,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:48,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:55:48,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:55:48,384 INFO L87 Difference]: Start difference. First operand 3393 states and 4085 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:55:51,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:51,226 INFO L93 Difference]: Finished difference Result 4063 states and 5156 transitions. [2022-11-18 19:55:51,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:55:51,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:55:51,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:51,241 INFO L225 Difference]: With dead ends: 4063 [2022-11-18 19:55:51,241 INFO L226 Difference]: Without dead ends: 3819 [2022-11-18 19:55:51,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:55:51,245 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 1218 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:51,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1139 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1671 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-18 19:55:51,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2022-11-18 19:55:52,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 3644. [2022-11-18 19:55:52,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 2868 states have (on average 1.2454672245467224) internal successors, (3572), 2940 states have internal predecessors, (3572), 383 states have call successors, (383), 306 states have call predecessors, (383), 391 states have return successors, (526), 400 states have call predecessors, (526), 380 states have call successors, (526) [2022-11-18 19:55:52,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 4481 transitions. [2022-11-18 19:55:52,045 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 4481 transitions. Word has length 124 [2022-11-18 19:55:52,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:52,045 INFO L495 AbstractCegarLoop]: Abstraction has 3644 states and 4481 transitions. [2022-11-18 19:55:52,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:55:52,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 4481 transitions. [2022-11-18 19:55:52,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:55:52,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:52,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:52,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:55:52,050 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:52,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:52,051 INFO L85 PathProgramCache]: Analyzing trace with hash 640264483, now seen corresponding path program 1 times [2022-11-18 19:55:52,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:52,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193181649] [2022-11-18 19:55:52,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:52,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:52,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:52,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:52,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:55:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:52,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:55:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:52,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:55:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:52,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:52,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193181649] [2022-11-18 19:55:52,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193181649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:52,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:52,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:52,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244370297] [2022-11-18 19:55:52,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:52,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:52,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:52,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:52,251 INFO L87 Difference]: Start difference. First operand 3644 states and 4481 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:55:55,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:55,654 INFO L93 Difference]: Finished difference Result 4661 states and 6105 transitions. [2022-11-18 19:55:55,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:55:55,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:55:55,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:55,667 INFO L225 Difference]: With dead ends: 4661 [2022-11-18 19:55:55,667 INFO L226 Difference]: Without dead ends: 4166 [2022-11-18 19:55:55,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:55:55,671 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 1229 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:55,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 1984 Invalid, 2618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 19:55:55,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2022-11-18 19:55:56,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 3878. [2022-11-18 19:55:56,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3079 states have (on average 1.2663202338421566) internal successors, (3899), 3152 states have internal predecessors, (3899), 399 states have call successors, (399), 312 states have call predecessors, (399), 398 states have return successors, (544), 417 states have call predecessors, (544), 396 states have call successors, (544) [2022-11-18 19:55:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 4842 transitions. [2022-11-18 19:55:56,356 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 4842 transitions. Word has length 124 [2022-11-18 19:55:56,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:56,356 INFO L495 AbstractCegarLoop]: Abstraction has 3878 states and 4842 transitions. [2022-11-18 19:55:56,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:55:56,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 4842 transitions. [2022-11-18 19:55:56,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:55:56,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:56,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:56,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:55:56,361 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:56,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:56,361 INFO L85 PathProgramCache]: Analyzing trace with hash 758705957, now seen corresponding path program 1 times [2022-11-18 19:55:56,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:56,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998380491] [2022-11-18 19:55:56,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:56,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:56,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:55:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:56,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:55:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:56,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:55:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:56,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:55:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:56,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:55:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:56,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:56,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998380491] [2022-11-18 19:55:56,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998380491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:56,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:56,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:56,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434329823] [2022-11-18 19:55:56,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:56,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:56,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:56,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:56,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:56,571 INFO L87 Difference]: Start difference. First operand 3878 states and 4842 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:00,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:00,014 INFO L93 Difference]: Finished difference Result 5542 states and 7494 transitions. [2022-11-18 19:56:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:56:00,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:56:00,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:00,033 INFO L225 Difference]: With dead ends: 5542 [2022-11-18 19:56:00,033 INFO L226 Difference]: Without dead ends: 4813 [2022-11-18 19:56:00,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:56:00,041 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1227 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:00,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1251 Valid, 1982 Invalid, 2616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 19:56:00,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2022-11-18 19:56:00,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 4347. [2022-11-18 19:56:00,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3502 states have (on average 1.3003997715591091) internal successors, (4554), 3577 states have internal predecessors, (4554), 431 states have call successors, (431), 324 states have call predecessors, (431), 412 states have return successors, (584), 451 states have call predecessors, (584), 428 states have call successors, (584) [2022-11-18 19:56:00,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5569 transitions. [2022-11-18 19:56:00,965 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5569 transitions. Word has length 124 [2022-11-18 19:56:00,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:00,966 INFO L495 AbstractCegarLoop]: Abstraction has 4347 states and 5569 transitions. [2022-11-18 19:56:00,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:00,967 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5569 transitions. [2022-11-18 19:56:00,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:56:00,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:00,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:00,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:56:00,972 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:56:00,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:00,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2146967325, now seen corresponding path program 1 times [2022-11-18 19:56:00,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:00,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399329224] [2022-11-18 19:56:00,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:00,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:01,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:01,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:56:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:01,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:56:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:01,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:56:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:01,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:56:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:01,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:01,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399329224] [2022-11-18 19:56:01,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399329224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:01,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:01,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:56:01,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528613216] [2022-11-18 19:56:01,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:01,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:56:01,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:01,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:56:01,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:56:01,156 INFO L87 Difference]: Start difference. First operand 4347 states and 5569 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:03,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:03,320 INFO L93 Difference]: Finished difference Result 5999 states and 8212 transitions. [2022-11-18 19:56:03,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:56:03,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:56:03,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:03,335 INFO L225 Difference]: With dead ends: 5999 [2022-11-18 19:56:03,335 INFO L226 Difference]: Without dead ends: 4801 [2022-11-18 19:56:03,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:56:03,342 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 960 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:03,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 1132 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 19:56:03,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2022-11-18 19:56:03,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4347. [2022-11-18 19:56:03,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3502 states have (on average 1.2989720159908624) internal successors, (4549), 3577 states have internal predecessors, (4549), 431 states have call successors, (431), 324 states have call predecessors, (431), 412 states have return successors, (584), 451 states have call predecessors, (584), 428 states have call successors, (584) [2022-11-18 19:56:03,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5564 transitions. [2022-11-18 19:56:03,990 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5564 transitions. Word has length 124 [2022-11-18 19:56:03,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:03,991 INFO L495 AbstractCegarLoop]: Abstraction has 4347 states and 5564 transitions. [2022-11-18 19:56:03,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:03,991 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5564 transitions. [2022-11-18 19:56:03,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:56:03,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:03,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:03,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 19:56:03,996 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:56:03,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:03,997 INFO L85 PathProgramCache]: Analyzing trace with hash 114605925, now seen corresponding path program 1 times [2022-11-18 19:56:03,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:03,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429392476] [2022-11-18 19:56:03,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:03,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:04,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:04,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:56:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:04,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:56:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:04,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:56:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:04,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:56:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:04,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:04,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429392476] [2022-11-18 19:56:04,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429392476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:04,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:04,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:56:04,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847151939] [2022-11-18 19:56:04,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:04,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:56:04,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:04,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:56:04,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:56:04,181 INFO L87 Difference]: Start difference. First operand 4347 states and 5564 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:07,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:07,786 INFO L93 Difference]: Finished difference Result 7228 states and 10115 transitions. [2022-11-18 19:56:07,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:56:07,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:56:07,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:07,805 INFO L225 Difference]: With dead ends: 7228 [2022-11-18 19:56:07,806 INFO L226 Difference]: Without dead ends: 6030 [2022-11-18 19:56:07,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:56:07,813 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1293 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 2222 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 2343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:07,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 1401 Invalid, 2343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2222 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 19:56:07,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6030 states. [2022-11-18 19:56:08,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6030 to 5295. [2022-11-18 19:56:08,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5295 states, 4358 states have (on average 1.3469481413492428) internal successors, (5870), 4437 states have internal predecessors, (5870), 495 states have call successors, (495), 348 states have call predecessors, (495), 440 states have return successors, (670), 519 states have call predecessors, (670), 492 states have call successors, (670) [2022-11-18 19:56:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 7035 transitions. [2022-11-18 19:56:08,641 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 7035 transitions. Word has length 124 [2022-11-18 19:56:08,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:08,642 INFO L495 AbstractCegarLoop]: Abstraction has 5295 states and 7035 transitions. [2022-11-18 19:56:08,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:08,642 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 7035 transitions. [2022-11-18 19:56:08,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:56:08,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:08,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:08,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:56:08,649 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:56:08,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:08,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1192536473, now seen corresponding path program 1 times [2022-11-18 19:56:08,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:08,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716574654] [2022-11-18 19:56:08,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:08,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:08,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:08,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:56:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:08,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:56:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:08,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:56:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:08,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:56:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:08,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:08,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716574654] [2022-11-18 19:56:08,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716574654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:08,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:08,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:56:08,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467628763] [2022-11-18 19:56:08,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:08,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:56:08,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:08,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:56:08,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:56:08,850 INFO L87 Difference]: Start difference. First operand 5295 states and 7035 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:11,812 INFO L93 Difference]: Finished difference Result 8182 states and 11624 transitions. [2022-11-18 19:56:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:56:11,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:56:11,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:11,838 INFO L225 Difference]: With dead ends: 8182 [2022-11-18 19:56:11,839 INFO L226 Difference]: Without dead ends: 6036 [2022-11-18 19:56:11,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:56:11,848 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 958 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:11,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 1132 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:56:11,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2022-11-18 19:56:12,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 5295. [2022-11-18 19:56:12,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5295 states, 4358 states have (on average 1.3448829738412116) internal successors, (5861), 4437 states have internal predecessors, (5861), 495 states have call successors, (495), 348 states have call predecessors, (495), 440 states have return successors, (670), 519 states have call predecessors, (670), 492 states have call successors, (670) [2022-11-18 19:56:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 7026 transitions. [2022-11-18 19:56:12,695 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 7026 transitions. Word has length 124 [2022-11-18 19:56:12,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:12,695 INFO L495 AbstractCegarLoop]: Abstraction has 5295 states and 7026 transitions. [2022-11-18 19:56:12,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:12,696 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 7026 transitions. [2022-11-18 19:56:12,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:56:12,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:12,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:12,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 19:56:12,702 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:56:12,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:12,702 INFO L85 PathProgramCache]: Analyzing trace with hash 704960293, now seen corresponding path program 1 times [2022-11-18 19:56:12,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:12,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329503603] [2022-11-18 19:56:12,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:12,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:12,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:12,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:56:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:12,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:56:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:12,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:56:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:12,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:56:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:12,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:12,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329503603] [2022-11-18 19:56:12,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329503603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:12,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:12,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:56:12,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937802408] [2022-11-18 19:56:12,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:12,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:56:12,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:12,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:56:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:56:12,936 INFO L87 Difference]: Start difference. First operand 5295 states and 7026 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:17,088 INFO L93 Difference]: Finished difference Result 10614 states and 15378 transitions. [2022-11-18 19:56:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:56:17,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:56:17,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:17,117 INFO L225 Difference]: With dead ends: 10614 [2022-11-18 19:56:17,117 INFO L226 Difference]: Without dead ends: 8468 [2022-11-18 19:56:17,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:56:17,127 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1213 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 2428 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:17,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 1982 Invalid, 2521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2428 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 19:56:17,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8468 states. [2022-11-18 19:56:18,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8468 to 7203. [2022-11-18 19:56:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7203 states, 6082 states have (on average 1.3987175271292338) internal successors, (8507), 6169 states have internal predecessors, (8507), 623 states have call successors, (623), 396 states have call predecessors, (623), 496 states have return successors, (860), 655 states have call predecessors, (860), 620 states have call successors, (860) [2022-11-18 19:56:18,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7203 states to 7203 states and 9990 transitions. [2022-11-18 19:56:18,363 INFO L78 Accepts]: Start accepts. Automaton has 7203 states and 9990 transitions. Word has length 124 [2022-11-18 19:56:18,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:18,363 INFO L495 AbstractCegarLoop]: Abstraction has 7203 states and 9990 transitions. [2022-11-18 19:56:18,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:18,364 INFO L276 IsEmpty]: Start isEmpty. Operand 7203 states and 9990 transitions. [2022-11-18 19:56:18,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:56:18,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:18,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:18,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 19:56:18,372 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:56:18,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:18,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1736001191, now seen corresponding path program 1 times [2022-11-18 19:56:18,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:18,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131193014] [2022-11-18 19:56:18,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:18,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:18,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:56:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:18,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:56:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:18,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:56:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:18,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:56:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:18,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:18,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131193014] [2022-11-18 19:56:18,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131193014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:18,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:18,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:56:18,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426495385] [2022-11-18 19:56:18,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:18,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:56:18,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:18,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:56:18,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:56:18,581 INFO L87 Difference]: Start difference. First operand 7203 states and 9990 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:21,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:21,753 INFO L93 Difference]: Finished difference Result 12554 states and 18475 transitions. [2022-11-18 19:56:21,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:56:21,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:56:21,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:21,784 INFO L225 Difference]: With dead ends: 12554 [2022-11-18 19:56:21,784 INFO L226 Difference]: Without dead ends: 8500 [2022-11-18 19:56:21,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:56:21,798 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 955 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:21,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 1130 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 19:56:21,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8500 states. [2022-11-18 19:56:23,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8500 to 7203. [2022-11-18 19:56:23,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7203 states, 6082 states have (on average 1.3959223939493588) internal successors, (8490), 6169 states have internal predecessors, (8490), 623 states have call successors, (623), 396 states have call predecessors, (623), 496 states have return successors, (860), 655 states have call predecessors, (860), 620 states have call successors, (860) [2022-11-18 19:56:23,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7203 states to 7203 states and 9973 transitions. [2022-11-18 19:56:23,233 INFO L78 Accepts]: Start accepts. Automaton has 7203 states and 9973 transitions. Word has length 124 [2022-11-18 19:56:23,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:23,233 INFO L495 AbstractCegarLoop]: Abstraction has 7203 states and 9973 transitions. [2022-11-18 19:56:23,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:23,234 INFO L276 IsEmpty]: Start isEmpty. Operand 7203 states and 9973 transitions. [2022-11-18 19:56:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:56:23,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:23,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:23,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 19:56:23,242 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:56:23,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:23,243 INFO L85 PathProgramCache]: Analyzing trace with hash -170402075, now seen corresponding path program 1 times [2022-11-18 19:56:23,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:23,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330323811] [2022-11-18 19:56:23,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:23,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:23,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:23,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:56:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:23,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:56:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:23,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:56:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:23,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:56:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:23,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:23,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330323811] [2022-11-18 19:56:23,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330323811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:23,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:23,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:56:23,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801485557] [2022-11-18 19:56:23,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:23,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:56:23,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:23,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:56:23,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:56:23,470 INFO L87 Difference]: Start difference. First operand 7203 states and 9973 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:29,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:29,245 INFO L93 Difference]: Finished difference Result 18906 states and 28242 transitions. [2022-11-18 19:56:29,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:56:29,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:56:29,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:29,288 INFO L225 Difference]: With dead ends: 18906 [2022-11-18 19:56:29,288 INFO L226 Difference]: Without dead ends: 14852 [2022-11-18 19:56:29,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:56:29,302 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1456 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1968 SdHoareTripleChecker+Invalid, 2480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:29,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1968 Invalid, 2480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 19:56:29,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14852 states. [2022-11-18 19:56:31,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14852 to 10841. [2022-11-18 19:56:31,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10841 states, 9368 states have (on average 1.4391545687446627) internal successors, (13482), 9471 states have internal predecessors, (13482), 863 states have call successors, (863), 492 states have call predecessors, (863), 608 states have return successors, (1278), 911 states have call predecessors, (1278), 860 states have call successors, (1278) [2022-11-18 19:56:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10841 states to 10841 states and 15623 transitions. [2022-11-18 19:56:31,221 INFO L78 Accepts]: Start accepts. Automaton has 10841 states and 15623 transitions. Word has length 124 [2022-11-18 19:56:31,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:31,221 INFO L495 AbstractCegarLoop]: Abstraction has 10841 states and 15623 transitions. [2022-11-18 19:56:31,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand 10841 states and 15623 transitions. [2022-11-18 19:56:31,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:56:31,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:31,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:31,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 19:56:31,231 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:56:31,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:31,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1430669031, now seen corresponding path program 1 times [2022-11-18 19:56:31,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:31,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273272017] [2022-11-18 19:56:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:31,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:31,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:56:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:31,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:56:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:56:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:31,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:56:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:31,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:31,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273272017] [2022-11-18 19:56:31,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273272017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:31,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:31,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:56:31,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674822566] [2022-11-18 19:56:31,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:31,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:56:31,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:31,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:56:31,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:56:31,459 INFO L87 Difference]: Start difference. First operand 10841 states and 15623 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:40,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:40,073 INFO L93 Difference]: Finished difference Result 32966 states and 50254 transitions. [2022-11-18 19:56:40,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:56:40,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:56:40,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:40,165 INFO L225 Difference]: With dead ends: 32966 [2022-11-18 19:56:40,165 INFO L226 Difference]: Without dead ends: 25274 [2022-11-18 19:56:40,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:56:40,193 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1257 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:40,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 1972 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-18 19:56:40,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25274 states. [2022-11-18 19:56:43,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25274 to 18258. [2022-11-18 19:56:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18258 states, 16097 states have (on average 1.4762999316642853) internal successors, (23764), 16232 states have internal predecessors, (23764), 1327 states have call successors, (1327), 684 states have call predecessors, (1327), 832 states have return successors, (2260), 1407 states have call predecessors, (2260), 1324 states have call successors, (2260) [2022-11-18 19:56:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18258 states to 18258 states and 27351 transitions. [2022-11-18 19:56:43,812 INFO L78 Accepts]: Start accepts. Automaton has 18258 states and 27351 transitions. Word has length 124 [2022-11-18 19:56:43,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:43,813 INFO L495 AbstractCegarLoop]: Abstraction has 18258 states and 27351 transitions. [2022-11-18 19:56:43,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:43,813 INFO L276 IsEmpty]: Start isEmpty. Operand 18258 states and 27351 transitions. [2022-11-18 19:56:43,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:56:43,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:43,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:43,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 19:56:43,828 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:56:43,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:43,829 INFO L85 PathProgramCache]: Analyzing trace with hash 373937829, now seen corresponding path program 1 times [2022-11-18 19:56:43,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:43,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460958180] [2022-11-18 19:56:43,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:43,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:43,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:43,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:56:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:43,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:56:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:44,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:56:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:44,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:56:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:44,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:44,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460958180] [2022-11-18 19:56:44,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460958180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:44,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:44,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:56:44,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215975808] [2022-11-18 19:56:44,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:44,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:56:44,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:44,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:56:44,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:56:44,022 INFO L87 Difference]: Start difference. First operand 18258 states and 27351 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:49,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:49,046 INFO L93 Difference]: Finished difference Result 37794 states and 58728 transitions. [2022-11-18 19:56:49,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:56:49,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:56:49,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:49,102 INFO L225 Difference]: With dead ends: 37794 [2022-11-18 19:56:49,102 INFO L226 Difference]: Without dead ends: 22685 [2022-11-18 19:56:49,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:56:49,128 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 960 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:49,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 1130 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 19:56:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22685 states. [2022-11-18 19:56:52,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22685 to 18258. [2022-11-18 19:56:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18258 states, 16097 states have (on average 1.4722619121575449) internal successors, (23699), 16232 states have internal predecessors, (23699), 1327 states have call successors, (1327), 684 states have call predecessors, (1327), 832 states have return successors, (2260), 1407 states have call predecessors, (2260), 1324 states have call successors, (2260) [2022-11-18 19:56:52,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18258 states to 18258 states and 27286 transitions. [2022-11-18 19:56:52,413 INFO L78 Accepts]: Start accepts. Automaton has 18258 states and 27286 transitions. Word has length 124 [2022-11-18 19:56:52,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:52,413 INFO L495 AbstractCegarLoop]: Abstraction has 18258 states and 27286 transitions. [2022-11-18 19:56:52,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:56:52,414 INFO L276 IsEmpty]: Start isEmpty. Operand 18258 states and 27286 transitions. [2022-11-18 19:56:52,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:56:52,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:52,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:52,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 19:56:52,428 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:56:52,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:52,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1725323047, now seen corresponding path program 1 times [2022-11-18 19:56:52,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:52,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153276940] [2022-11-18 19:56:52,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:52,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:52,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:56:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:52,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:56:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:52,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:56:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:52,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:56:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:52,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:56:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:52,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:52,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153276940] [2022-11-18 19:56:52,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153276940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:52,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:52,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:56:52,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519985738] [2022-11-18 19:56:52,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:52,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:56:52,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:52,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:56:52,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:56:52,651 INFO L87 Difference]: Start difference. First operand 18258 states and 27286 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:57:03,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:03,127 INFO L93 Difference]: Finished difference Result 59017 states and 91664 transitions. [2022-11-18 19:57:03,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:57:03,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:57:03,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:03,265 INFO L225 Difference]: With dead ends: 59017 [2022-11-18 19:57:03,265 INFO L226 Difference]: Without dead ends: 43908 [2022-11-18 19:57:03,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:57:03,466 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1277 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 2471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:03,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1300 Valid, 1397 Invalid, 2471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 19:57:03,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43908 states. [2022-11-18 19:57:09,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43908 to 33189. [2022-11-18 19:57:09,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33189 states, 29684 states have (on average 1.4965974935992454) internal successors, (44425), 29883 states have internal predecessors, (44425), 2223 states have call successors, (2223), 1068 states have call predecessors, (2223), 1280 states have return successors, (4678), 2367 states have call predecessors, (4678), 2220 states have call successors, (4678) [2022-11-18 19:57:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33189 states to 33189 states and 51326 transitions. [2022-11-18 19:57:09,431 INFO L78 Accepts]: Start accepts. Automaton has 33189 states and 51326 transitions. Word has length 124 [2022-11-18 19:57:09,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:09,432 INFO L495 AbstractCegarLoop]: Abstraction has 33189 states and 51326 transitions. [2022-11-18 19:57:09,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:57:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 33189 states and 51326 transitions. [2022-11-18 19:57:09,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:57:09,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:09,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:09,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 19:57:09,452 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:57:09,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:09,452 INFO L85 PathProgramCache]: Analyzing trace with hash 841814057, now seen corresponding path program 1 times [2022-11-18 19:57:09,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:09,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592825936] [2022-11-18 19:57:09,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:09,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:09,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:57:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:09,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:57:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:09,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:57:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:09,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:57:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:09,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:57:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:09,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:09,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592825936] [2022-11-18 19:57:09,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592825936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:09,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:09,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:57:09,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690729507] [2022-11-18 19:57:09,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:09,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:57:09,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:09,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:57:09,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:57:09,772 INFO L87 Difference]: Start difference. First operand 33189 states and 51326 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)