./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a --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 d5d3c0f581b3d52ccfb3e43d6fb6458a66cd40c307750c0d7336040b60b78e76 --- 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-b5237d8 [2022-11-21 16:22:26,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:22:26,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:22:26,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:22:26,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:22:26,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:22:26,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:22:26,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:22:26,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:22:26,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:22:26,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:22:26,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:22:26,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:22:26,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:22:26,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:22:26,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:22:26,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:22:26,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:22:26,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:22:26,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:22:26,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:22:26,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:22:26,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:22:26,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:22:26,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:22:26,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:22:26,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:22:26,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:22:26,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:22:26,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:22:26,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:22:26,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:22:26,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:22:26,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:22:26,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:22:26,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:22:26,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:22:26,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:22:26,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:22:26,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:22:26,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:22:26,901 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:22:26,924 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:22:26,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:22:26,925 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:22:26,925 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:22:26,926 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:22:26,926 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:22:26,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:22:26,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:22:26,927 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:22:26,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:22:26,928 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:22:26,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:22:26,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:22:26,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:22:26,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:22:26,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:22:26,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:22:26,930 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:22:26,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:22:26,930 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:22:26,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:22:26,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:22:26,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:22:26,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:22:26,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:22:26,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:22:26,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:22:26,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:22:26,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:22:26,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:22:26,934 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:22:26,934 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:22:26,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:22:26,934 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_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5d3c0f581b3d52ccfb3e43d6fb6458a66cd40c307750c0d7336040b60b78e76 [2022-11-21 16:22:27,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:22:27,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:22:27,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:22:27,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:22:27,255 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:22:27,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c [2022-11-21 16:22:30,603 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:22:30,961 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:22:30,966 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c [2022-11-21 16:22:30,999 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/data/98b7addfa/236979085db14a3c85e81a21c6a8f15e/FLAG07255eb88 [2022-11-21 16:22:31,015 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/data/98b7addfa/236979085db14a3c85e81a21c6a8f15e [2022-11-21 16:22:31,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:22:31,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:22:31,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:22:31,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:22:31,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:22:31,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:22:31" (1/1) ... [2022-11-21 16:22:31,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e60dc51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:22:31, skipping insertion in model container [2022-11-21 16:22:31,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:22:31" (1/1) ... [2022-11-21 16:22:31,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:22:31,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:22:31,563 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c[46529,46542] [2022-11-21 16:22:31,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:22:31,649 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:22:31,738 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c[46529,46542] [2022-11-21 16:22:31,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:22:31,821 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:22:31,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:22:31 WrapperNode [2022-11-21 16:22:31,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:22:31,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:22:31,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:22:31,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:22:31,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:22:31" (1/1) ... [2022-11-21 16:22:31,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:22:31" (1/1) ... [2022-11-21 16:22:31,909 INFO L138 Inliner]: procedures = 93, calls = 337, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 814 [2022-11-21 16:22:31,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:22:31,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:22:31,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:22:31,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:22:31,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:22:31" (1/1) ... [2022-11-21 16:22:31,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:22:31" (1/1) ... [2022-11-21 16:22:31,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:22:31" (1/1) ... [2022-11-21 16:22:31,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:22:31" (1/1) ... [2022-11-21 16:22:31,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:22:31" (1/1) ... [2022-11-21 16:22:31,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:22:31" (1/1) ... [2022-11-21 16:22:31,969 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:22:31" (1/1) ... [2022-11-21 16:22:31,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:22:31" (1/1) ... [2022-11-21 16:22:31,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:22:31,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:22:31,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:22:31,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:22:31,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:22:31" (1/1) ... [2022-11-21 16:22:31,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:22:32,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:22:32,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:22:32,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:22:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:22:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-21 16:22:32,109 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-21 16:22:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-21 16:22:32,109 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-21 16:22:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-21 16:22:32,110 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-21 16:22:32,112 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-21 16:22:32,113 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-21 16:22:32,113 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-21 16:22:32,113 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-21 16:22:32,113 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-21 16:22:32,114 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-21 16:22:32,114 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-21 16:22:32,114 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-21 16:22:32,115 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-21 16:22:32,115 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-21 16:22:32,116 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-21 16:22:32,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-21 16:22:32,116 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-21 16:22:32,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-21 16:22:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-21 16:22:32,117 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-21 16:22:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-21 16:22:32,117 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-21 16:22:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-21 16:22:32,118 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-21 16:22:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-21 16:22:32,118 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-21 16:22:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2022-11-21 16:22:32,119 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2022-11-21 16:22:32,120 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-21 16:22:32,120 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-21 16:22:32,120 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-21 16:22:32,121 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-21 16:22:32,122 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-21 16:22:32,122 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-21 16:22:32,122 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2022-11-21 16:22:32,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2022-11-21 16:22:32,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:22:32,123 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-21 16:22:32,124 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-21 16:22:32,124 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-21 16:22:32,124 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-21 16:22:32,124 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-21 16:22:32,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-21 16:22:32,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:22:32,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:22:32,125 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-21 16:22:32,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-21 16:22:32,308 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:22:32,310 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:22:33,668 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:22:33,681 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:22:33,682 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:22:33,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:22:33 BoogieIcfgContainer [2022-11-21 16:22:33,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:22:33,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:22:33,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:22:33,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:22:33,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:22:31" (1/3) ... [2022-11-21 16:22:33,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3684e581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:22:33, skipping insertion in model container [2022-11-21 16:22:33,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:22:31" (2/3) ... [2022-11-21 16:22:33,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3684e581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:22:33, skipping insertion in model container [2022-11-21 16:22:33,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:22:33" (3/3) ... [2022-11-21 16:22:33,694 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product26.cil.c [2022-11-21 16:22:33,715 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:22:33,716 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:22:33,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:22:33,811 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;@6ed1b406, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:22:33,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:22:33,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 545 states, 431 states have (on average 1.7076566125290022) internal successors, (736), 454 states have internal predecessors, (736), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (89), 82 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-21 16:22:33,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-21 16:22:33,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:22:33,844 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] [2022-11-21 16:22:33,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:22:33,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:22:33,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1868940779, now seen corresponding path program 1 times [2022-11-21 16:22:33,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:22:33,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50505335] [2022-11-21 16:22:33,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:22:33,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:22:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:34,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:22:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:34,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:22:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:34,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:22:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:34,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 16:22:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:35,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:22:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:35,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:22:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:35,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:22:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:22:35,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:22:35,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50505335] [2022-11-21 16:22:35,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50505335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:22:35,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:22:35,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:22:35,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119022271] [2022-11-21 16:22:35,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:22:35,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:22:35,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:22:35,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:22:35,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:22:35,143 INFO L87 Difference]: Start difference. First operand has 545 states, 431 states have (on average 1.7076566125290022) internal successors, (736), 454 states have internal predecessors, (736), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (89), 82 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:22:42,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:22:42,111 INFO L93 Difference]: Finished difference Result 1223 states and 2080 transitions. [2022-11-21 16:22:42,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:22:42,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2022-11-21 16:22:42,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:22:42,149 INFO L225 Difference]: With dead ends: 1223 [2022-11-21 16:22:42,149 INFO L226 Difference]: Without dead ends: 690 [2022-11-21 16:22:42,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:22:42,164 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 680 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 2745 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:22:42,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1197 Invalid, 2860 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 2745 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-21 16:22:42,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-21 16:22:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-11-21 16:22:42,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.703529411764706) internal successors, (724), 446 states have internal predecessors, (724), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-21 16:22:42,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 897 transitions. [2022-11-21 16:22:42,387 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 897 transitions. Word has length 58 [2022-11-21 16:22:42,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:22:42,388 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 897 transitions. [2022-11-21 16:22:42,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:22:42,388 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 897 transitions. [2022-11-21 16:22:42,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-21 16:22:42,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:22:42,393 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] [2022-11-21 16:22:42,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:22:42,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:22:42,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:22:42,394 INFO L85 PathProgramCache]: Analyzing trace with hash 49721393, now seen corresponding path program 1 times [2022-11-21 16:22:42,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:22:42,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962992910] [2022-11-21 16:22:42,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:22:42,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:22:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:42,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:22:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:42,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:22:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:42,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:22:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:42,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-21 16:22:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:42,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:22:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:22:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:42,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:22:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:22:42,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:22:42,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962992910] [2022-11-21 16:22:42,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962992910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:22:42,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:22:42,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:22:42,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412698127] [2022-11-21 16:22:42,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:22:42,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:22:42,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:22:42,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:22:42,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:22:42,914 INFO L87 Difference]: Start difference. First operand 537 states and 897 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:22:49,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:22:49,549 INFO L93 Difference]: Finished difference Result 1209 states and 2046 transitions. [2022-11-21 16:22:49,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:22:49,550 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2022-11-21 16:22:49,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:22:49,557 INFO L225 Difference]: With dead ends: 1209 [2022-11-21 16:22:49,558 INFO L226 Difference]: Without dead ends: 690 [2022-11-21 16:22:49,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:22:49,562 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 678 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 2738 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:22:49,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1157 Invalid, 2854 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2738 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-21 16:22:49,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-21 16:22:49,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-11-21 16:22:49,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.7011764705882353) internal successors, (723), 446 states have internal predecessors, (723), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-21 16:22:49,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 896 transitions. [2022-11-21 16:22:49,678 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 896 transitions. Word has length 61 [2022-11-21 16:22:49,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:22:49,679 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 896 transitions. [2022-11-21 16:22:49,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:22:49,679 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 896 transitions. [2022-11-21 16:22:49,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-21 16:22:49,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:22:49,682 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] [2022-11-21 16:22:49,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:22:49,683 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:22:49,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:22:49,684 INFO L85 PathProgramCache]: Analyzing trace with hash -343579, now seen corresponding path program 1 times [2022-11-21 16:22:49,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:22:49,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733759766] [2022-11-21 16:22:49,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:22:49,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:22:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:49,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:22:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:49,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:22:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:49,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 16:22:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:50,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 16:22:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:50,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:22:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:50,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:22:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:50,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:22:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:22:50,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:22:50,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733759766] [2022-11-21 16:22:50,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733759766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:22:50,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:22:50,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:22:50,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939493411] [2022-11-21 16:22:50,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:22:50,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:22:50,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:22:50,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:22:50,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:22:50,170 INFO L87 Difference]: Start difference. First operand 537 states and 896 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:22:56,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:22:56,570 INFO L93 Difference]: Finished difference Result 1209 states and 2045 transitions. [2022-11-21 16:22:56,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:22:56,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2022-11-21 16:22:56,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:22:56,577 INFO L225 Difference]: With dead ends: 1209 [2022-11-21 16:22:56,578 INFO L226 Difference]: Without dead ends: 690 [2022-11-21 16:22:56,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:22:56,582 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 675 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2736 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:22:56,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1159 Invalid, 2852 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2736 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-21 16:22:56,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-21 16:22:56,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-11-21 16:22:56,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6988235294117646) internal successors, (722), 446 states have internal predecessors, (722), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-21 16:22:56,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 895 transitions. [2022-11-21 16:22:56,692 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 895 transitions. Word has length 62 [2022-11-21 16:22:56,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:22:56,692 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 895 transitions. [2022-11-21 16:22:56,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:22:56,693 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 895 transitions. [2022-11-21 16:22:56,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-21 16:22:56,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:22:56,695 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] [2022-11-21 16:22:56,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:22:56,695 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:22:56,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:22:56,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1969000915, now seen corresponding path program 1 times [2022-11-21 16:22:56,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:22:56,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658013428] [2022-11-21 16:22:56,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:22:56,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:22:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:56,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:22:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:56,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:22:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:56,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:22:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:57,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 16:22:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:57,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:22:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:57,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:22:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:57,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:22:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:22:57,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:22:57,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658013428] [2022-11-21 16:22:57,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658013428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:22:57,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:22:57,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:22:57,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008777187] [2022-11-21 16:22:57,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:22:57,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:22:57,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:22:57,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:22:57,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:22:57,195 INFO L87 Difference]: Start difference. First operand 537 states and 895 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:02,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:23:02,882 INFO L93 Difference]: Finished difference Result 1209 states and 2044 transitions. [2022-11-21 16:23:02,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:23:02,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-11-21 16:23:02,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:23:02,898 INFO L225 Difference]: With dead ends: 1209 [2022-11-21 16:23:02,898 INFO L226 Difference]: Without dead ends: 690 [2022-11-21 16:23:02,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:23:02,914 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 1114 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 2556 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 2801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 2556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:23:02,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 1144 Invalid, 2801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 2556 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-21 16:23:02,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-21 16:23:03,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-11-21 16:23:03,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6964705882352942) internal successors, (721), 446 states have internal predecessors, (721), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-21 16:23:03,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 894 transitions. [2022-11-21 16:23:03,049 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 894 transitions. Word has length 63 [2022-11-21 16:23:03,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:23:03,050 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 894 transitions. [2022-11-21 16:23:03,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:03,050 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 894 transitions. [2022-11-21 16:23:03,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-21 16:23:03,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:23:03,053 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] [2022-11-21 16:23:03,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:23:03,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:23:03,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:23:03,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1010487905, now seen corresponding path program 1 times [2022-11-21 16:23:03,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:23:03,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271149531] [2022-11-21 16:23:03,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:23:03,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:23:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:03,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:23:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:03,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:03,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 16:23:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:03,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-21 16:23:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:03,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:03,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:03,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:23:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:03,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:23:03,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:23:03,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271149531] [2022-11-21 16:23:03,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271149531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:23:03,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:23:03,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:23:03,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654825114] [2022-11-21 16:23:03,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:23:03,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:23:03,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:23:03,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:23:03,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:23:03,568 INFO L87 Difference]: Start difference. First operand 537 states and 894 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:10,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:23:10,036 INFO L93 Difference]: Finished difference Result 1209 states and 2043 transitions. [2022-11-21 16:23:10,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:23:10,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-11-21 16:23:10,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:23:10,042 INFO L225 Difference]: With dead ends: 1209 [2022-11-21 16:23:10,042 INFO L226 Difference]: Without dead ends: 690 [2022-11-21 16:23:10,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:23:10,052 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 669 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 2732 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:23:10,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1147 Invalid, 2850 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 2732 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-21 16:23:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-21 16:23:10,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-11-21 16:23:10,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6941176470588235) internal successors, (720), 446 states have internal predecessors, (720), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-21 16:23:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 893 transitions. [2022-11-21 16:23:10,169 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 893 transitions. Word has length 64 [2022-11-21 16:23:10,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:23:10,169 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 893 transitions. [2022-11-21 16:23:10,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:10,170 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 893 transitions. [2022-11-21 16:23:10,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 16:23:10,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:23:10,172 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] [2022-11-21 16:23:10,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:23:10,172 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:23:10,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:23:10,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1531282391, now seen corresponding path program 1 times [2022-11-21 16:23:10,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:23:10,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947855253] [2022-11-21 16:23:10,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:23:10,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:23:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:10,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:23:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:10,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:10,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:23:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:10,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 16:23:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:10,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:10,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:10,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:23:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:23:10,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:23:10,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947855253] [2022-11-21 16:23:10,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947855253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:23:10,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:23:10,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:23:10,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129800100] [2022-11-21 16:23:10,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:23:10,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:23:10,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:23:10,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:23:10,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:23:10,695 INFO L87 Difference]: Start difference. First operand 537 states and 893 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:16,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:23:16,653 INFO L93 Difference]: Finished difference Result 1169 states and 1967 transitions. [2022-11-21 16:23:16,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:23:16,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-21 16:23:16,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:23:16,680 INFO L225 Difference]: With dead ends: 1169 [2022-11-21 16:23:16,681 INFO L226 Difference]: Without dead ends: 690 [2022-11-21 16:23:16,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:23:16,685 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 765 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:23:16,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1134 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2652 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-21 16:23:16,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-21 16:23:16,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-11-21 16:23:16,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6823529411764706) internal successors, (715), 446 states have internal predecessors, (715), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-21 16:23:16,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 888 transitions. [2022-11-21 16:23:16,803 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 888 transitions. Word has length 65 [2022-11-21 16:23:16,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:23:16,804 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 888 transitions. [2022-11-21 16:23:16,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:16,804 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 888 transitions. [2022-11-21 16:23:16,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-21 16:23:16,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:23:16,809 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] [2022-11-21 16:23:16,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:23:16,810 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:23:16,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:23:16,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1625150366, now seen corresponding path program 1 times [2022-11-21 16:23:16,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:23:16,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434278915] [2022-11-21 16:23:16,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:23:16,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:23:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:17,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:23:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:17,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:17,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:23:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:17,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:23:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:17,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:17,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:17,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:23:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:23:17,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:23:17,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434278915] [2022-11-21 16:23:17,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434278915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:23:17,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:23:17,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:23:17,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750201422] [2022-11-21 16:23:17,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:23:17,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:23:17,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:23:17,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:23:17,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:23:17,446 INFO L87 Difference]: Start difference. First operand 537 states and 888 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:23,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:23:23,730 INFO L93 Difference]: Finished difference Result 1169 states and 1962 transitions. [2022-11-21 16:23:23,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:23:23,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-21 16:23:23,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:23:23,739 INFO L225 Difference]: With dead ends: 1169 [2022-11-21 16:23:23,739 INFO L226 Difference]: Without dead ends: 690 [2022-11-21 16:23:23,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:23:23,743 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 759 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:23:23,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 1139 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2632 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-21 16:23:23,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-21 16:23:23,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-11-21 16:23:23,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6705882352941177) internal successors, (710), 446 states have internal predecessors, (710), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-21 16:23:23,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 883 transitions. [2022-11-21 16:23:23,902 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 883 transitions. Word has length 66 [2022-11-21 16:23:23,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:23:23,904 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 883 transitions. [2022-11-21 16:23:23,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:23,905 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 883 transitions. [2022-11-21 16:23:23,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-21 16:23:23,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:23:23,908 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] [2022-11-21 16:23:23,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:23:23,909 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:23:23,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:23:23,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1328457138, now seen corresponding path program 1 times [2022-11-21 16:23:23,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:23:23,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958855860] [2022-11-21 16:23:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:23:23,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:23:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:24,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:23:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:24,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:24,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:23:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:24,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 16:23:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:24,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:24,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:24,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:23:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:23:24,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:23:24,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958855860] [2022-11-21 16:23:24,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958855860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:23:24,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:23:24,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:23:24,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675614429] [2022-11-21 16:23:24,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:23:24,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:23:24,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:23:24,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:23:24,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:23:24,563 INFO L87 Difference]: Start difference. First operand 537 states and 883 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:30,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:23:30,512 INFO L93 Difference]: Finished difference Result 1169 states and 1957 transitions. [2022-11-21 16:23:30,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:23:30,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-11-21 16:23:30,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:23:30,520 INFO L225 Difference]: With dead ends: 1169 [2022-11-21 16:23:30,521 INFO L226 Difference]: Without dead ends: 690 [2022-11-21 16:23:30,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:23:30,525 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 1202 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:23:30,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 1119 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-21 16:23:30,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-21 16:23:30,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-11-21 16:23:30,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6588235294117648) internal successors, (705), 446 states have internal predecessors, (705), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-21 16:23:30,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 878 transitions. [2022-11-21 16:23:30,638 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 878 transitions. Word has length 67 [2022-11-21 16:23:30,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:23:30,638 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 878 transitions. [2022-11-21 16:23:30,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:30,639 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 878 transitions. [2022-11-21 16:23:30,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-21 16:23:30,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:23:30,641 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] [2022-11-21 16:23:30,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:23:30,641 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:23:30,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:23:30,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1284448200, now seen corresponding path program 1 times [2022-11-21 16:23:30,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:23:30,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827850581] [2022-11-21 16:23:30,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:23:30,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:23:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:30,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:23:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:30,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:30,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:23:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:31,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-21 16:23:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:31,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:31,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:31,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:23:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:31,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:23:31,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:23:31,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827850581] [2022-11-21 16:23:31,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827850581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:23:31,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:23:31,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:23:31,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877260829] [2022-11-21 16:23:31,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:23:31,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:23:31,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:23:31,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:23:31,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:23:31,245 INFO L87 Difference]: Start difference. First operand 537 states and 878 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:37,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:23:37,328 INFO L93 Difference]: Finished difference Result 1184 states and 1972 transitions. [2022-11-21 16:23:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:23:37,329 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-11-21 16:23:37,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:23:37,333 INFO L225 Difference]: With dead ends: 1184 [2022-11-21 16:23:37,333 INFO L226 Difference]: Without dead ends: 711 [2022-11-21 16:23:37,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:23:37,341 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 1198 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 2717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:23:37,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 1113 Invalid, 2717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-21 16:23:37,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-11-21 16:23:37,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 539. [2022-11-21 16:23:37,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 427 states have (on average 1.6557377049180328) internal successors, (707), 448 states have internal predecessors, (707), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-21 16:23:37,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 880 transitions. [2022-11-21 16:23:37,437 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 880 transitions. Word has length 68 [2022-11-21 16:23:37,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:23:37,437 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 880 transitions. [2022-11-21 16:23:37,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:37,437 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 880 transitions. [2022-11-21 16:23:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-21 16:23:37,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:23:37,440 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] [2022-11-21 16:23:37,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:23:37,440 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:23:37,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:23:37,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1809268505, now seen corresponding path program 1 times [2022-11-21 16:23:37,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:23:37,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405599812] [2022-11-21 16:23:37,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:23:37,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:23:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:37,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:23:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:37,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:37,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:23:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:37,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-21 16:23:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:37,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:37,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:37,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:23:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:23:37,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:23:37,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405599812] [2022-11-21 16:23:37,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405599812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:23:37,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:23:37,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:23:37,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210529447] [2022-11-21 16:23:37,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:23:37,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:23:37,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:23:37,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:23:37,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:23:37,938 INFO L87 Difference]: Start difference. First operand 539 states and 880 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:43,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:23:43,842 INFO L93 Difference]: Finished difference Result 1175 states and 1958 transitions. [2022-11-21 16:23:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:23:43,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-11-21 16:23:43,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:23:43,846 INFO L225 Difference]: With dead ends: 1175 [2022-11-21 16:23:43,847 INFO L226 Difference]: Without dead ends: 694 [2022-11-21 16:23:43,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:23:43,850 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 757 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:23:43,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1135 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-21 16:23:43,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-11-21 16:23:43,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 539. [2022-11-21 16:23:43,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 427 states have (on average 1.6440281030444965) internal successors, (702), 448 states have internal predecessors, (702), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-21 16:23:43,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 875 transitions. [2022-11-21 16:23:43,973 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 875 transitions. Word has length 68 [2022-11-21 16:23:43,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:23:43,974 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 875 transitions. [2022-11-21 16:23:43,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:43,974 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 875 transitions. [2022-11-21 16:23:43,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-21 16:23:43,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:23:43,976 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] [2022-11-21 16:23:43,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:23:43,977 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:23:43,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:23:43,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1924060336, now seen corresponding path program 1 times [2022-11-21 16:23:43,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:23:43,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936937201] [2022-11-21 16:23:43,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:23:43,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:23:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:44,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:23:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:44,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:44,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:23:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:44,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 16:23:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:44,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:44,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:44,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:23:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:23:44,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:23:44,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936937201] [2022-11-21 16:23:44,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936937201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:23:44,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:23:44,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:23:44,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630006475] [2022-11-21 16:23:44,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:23:44,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:23:44,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:23:44,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:23:44,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:23:44,511 INFO L87 Difference]: Start difference. First operand 539 states and 875 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:50,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:23:50,714 INFO L93 Difference]: Finished difference Result 1188 states and 1969 transitions. [2022-11-21 16:23:50,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:23:50,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-11-21 16:23:50,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:23:50,720 INFO L225 Difference]: With dead ends: 1188 [2022-11-21 16:23:50,720 INFO L226 Difference]: Without dead ends: 715 [2022-11-21 16:23:50,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:23:50,723 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 749 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 2604 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 2724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:23:50,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 1120 Invalid, 2724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2604 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-21 16:23:50,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-11-21 16:23:50,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 542. [2022-11-21 16:23:50,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 430 states have (on average 1.6395348837209303) internal successors, (705), 451 states have internal predecessors, (705), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-21 16:23:50,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 878 transitions. [2022-11-21 16:23:50,845 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 878 transitions. Word has length 69 [2022-11-21 16:23:50,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:23:50,845 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 878 transitions. [2022-11-21 16:23:50,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:50,846 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 878 transitions. [2022-11-21 16:23:50,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-21 16:23:50,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:23:50,848 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] [2022-11-21 16:23:50,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:23:50,848 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:23:50,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:23:50,849 INFO L85 PathProgramCache]: Analyzing trace with hash -622918541, now seen corresponding path program 1 times [2022-11-21 16:23:50,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:23:50,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846544572] [2022-11-21 16:23:50,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:23:50,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:23:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:51,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:23:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:51,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:51,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:23:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:51,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 16:23:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:51,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:51,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:51,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:23:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:23:51,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:23:51,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846544572] [2022-11-21 16:23:51,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846544572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:23:51,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:23:51,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:23:51,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517722638] [2022-11-21 16:23:51,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:23:51,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:23:51,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:23:51,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:23:51,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:23:51,309 INFO L87 Difference]: Start difference. First operand 542 states and 878 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:56,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:23:56,508 INFO L93 Difference]: Finished difference Result 1184 states and 1962 transitions. [2022-11-21 16:23:56,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:23:56,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-11-21 16:23:56,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:23:56,513 INFO L225 Difference]: With dead ends: 1184 [2022-11-21 16:23:56,513 INFO L226 Difference]: Without dead ends: 700 [2022-11-21 16:23:56,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:23:56,516 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 1189 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 2660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:23:56,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1264 Valid, 1122 Invalid, 2660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-21 16:23:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-11-21 16:23:56,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 542. [2022-11-21 16:23:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 430 states have (on average 1.627906976744186) internal successors, (700), 451 states have internal predecessors, (700), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-21 16:23:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 873 transitions. [2022-11-21 16:23:56,624 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 873 transitions. Word has length 69 [2022-11-21 16:23:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:23:56,624 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 873 transitions. [2022-11-21 16:23:56,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:23:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 873 transitions. [2022-11-21 16:23:56,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-21 16:23:56,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:23:56,626 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] [2022-11-21 16:23:56,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:23:56,627 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:23:56,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:23:56,627 INFO L85 PathProgramCache]: Analyzing trace with hash -41250547, now seen corresponding path program 1 times [2022-11-21 16:23:56,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:23:56,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994373753] [2022-11-21 16:23:56,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:23:56,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:23:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:23:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:56,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:56,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:23:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:57,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 16:23:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:57,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:57,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:57,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:23:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:23:57,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:23:57,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994373753] [2022-11-21 16:23:57,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994373753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:23:57,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:23:57,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:23:57,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224311102] [2022-11-21 16:23:57,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:23:57,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:23:57,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:23:57,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:23:57,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:23:57,125 INFO L87 Difference]: Start difference. First operand 542 states and 873 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:24:03,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:24:03,201 INFO L93 Difference]: Finished difference Result 1194 states and 1968 transitions. [2022-11-21 16:24:03,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:24:03,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-11-21 16:24:03,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:24:03,206 INFO L225 Difference]: With dead ends: 1194 [2022-11-21 16:24:03,206 INFO L226 Difference]: Without dead ends: 721 [2022-11-21 16:24:03,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:24:03,209 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 741 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 2579 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 2699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:24:03,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 1127 Invalid, 2699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2579 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-21 16:24:03,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-11-21 16:24:03,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 546. [2022-11-21 16:24:03,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 434 states have (on average 1.6221198156682028) internal successors, (704), 455 states have internal predecessors, (704), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-21 16:24:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 877 transitions. [2022-11-21 16:24:03,303 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 877 transitions. Word has length 70 [2022-11-21 16:24:03,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:24:03,304 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 877 transitions. [2022-11-21 16:24:03,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:24:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 877 transitions. [2022-11-21 16:24:03,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-21 16:24:03,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:24:03,306 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] [2022-11-21 16:24:03,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:24:03,306 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:24:03,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:24:03,307 INFO L85 PathProgramCache]: Analyzing trace with hash 705825132, now seen corresponding path program 1 times [2022-11-21 16:24:03,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:24:03,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540264839] [2022-11-21 16:24:03,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:24:03,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:24:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:03,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:24:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:03,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:03,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:24:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:03,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 16:24:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:03,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:03,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:03,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:24:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:03,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:24:03,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:24:03,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540264839] [2022-11-21 16:24:03,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540264839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:24:03,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:24:03,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 16:24:03,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86084411] [2022-11-21 16:24:03,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:24:03,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:24:03,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:24:03,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:24:03,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:24:03,911 INFO L87 Difference]: Start difference. First operand 546 states and 877 transitions. Second operand has 12 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 16:24:12,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:24:12,637 INFO L93 Difference]: Finished difference Result 1212 states and 2000 transitions. [2022-11-21 16:24:12,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:24:12,638 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2022-11-21 16:24:12,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:24:12,644 INFO L225 Difference]: With dead ends: 1212 [2022-11-21 16:24:12,645 INFO L226 Difference]: Without dead ends: 742 [2022-11-21 16:24:12,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:24:12,649 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 805 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 7019 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 2920 SdHoareTripleChecker+Invalid, 7148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 7019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:24:12,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 2920 Invalid, 7148 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 7019 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-21 16:24:12,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-11-21 16:24:12,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 561. [2022-11-21 16:24:12,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 445 states have (on average 1.6112359550561797) internal successors, (717), 468 states have internal predecessors, (717), 90 states have call successors, (90), 23 states have call predecessors, (90), 25 states have return successors, (89), 83 states have call predecessors, (89), 85 states have call successors, (89) [2022-11-21 16:24:12,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 896 transitions. [2022-11-21 16:24:12,788 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 896 transitions. Word has length 70 [2022-11-21 16:24:12,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:24:12,789 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 896 transitions. [2022-11-21 16:24:12,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 16:24:12,789 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 896 transitions. [2022-11-21 16:24:12,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-21 16:24:12,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:24:12,830 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:24:12,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:24:12,830 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:24:12,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:24:12,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2083828554, now seen corresponding path program 1 times [2022-11-21 16:24:12,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:24:12,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890546649] [2022-11-21 16:24:12,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:24:12,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:24:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:24:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:13,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:24:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:13,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 16:24:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:13,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:13,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:13,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:24:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:13,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 16:24:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:24:13,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:24:13,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890546649] [2022-11-21 16:24:13,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890546649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:24:13,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:24:13,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:24:13,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62094802] [2022-11-21 16:24:13,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:24:13,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:24:13,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:24:13,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:24:13,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:24:13,287 INFO L87 Difference]: Start difference. First operand 561 states and 896 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 16:24:18,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:24:18,582 INFO L93 Difference]: Finished difference Result 1267 states and 2057 transitions. [2022-11-21 16:24:18,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:24:18,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-11-21 16:24:18,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:24:18,586 INFO L225 Difference]: With dead ends: 1267 [2022-11-21 16:24:18,586 INFO L226 Difference]: Without dead ends: 704 [2022-11-21 16:24:18,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:24:18,588 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 1099 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 2689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:24:18,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 1138 Invalid, 2689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-21 16:24:18,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-11-21 16:24:18,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 542. [2022-11-21 16:24:18,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.6200466200466201) internal successors, (695), 450 states have internal predecessors, (695), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (86), 82 states have call predecessors, (86), 84 states have call successors, (86) [2022-11-21 16:24:18,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 870 transitions. [2022-11-21 16:24:18,701 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 870 transitions. Word has length 76 [2022-11-21 16:24:18,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:24:18,702 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 870 transitions. [2022-11-21 16:24:18,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 16:24:18,702 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 870 transitions. [2022-11-21 16:24:18,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 16:24:18,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:24:18,704 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:24:18,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:24:18,705 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:24:18,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:24:18,705 INFO L85 PathProgramCache]: Analyzing trace with hash 715869938, now seen corresponding path program 1 times [2022-11-21 16:24:18,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:24:18,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375219176] [2022-11-21 16:24:18,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:24:18,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:24:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:18,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:24:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:18,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:18,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:24:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:19,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 16:24:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:19,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:19,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:24:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 16:24:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:24:19,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:24:19,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375219176] [2022-11-21 16:24:19,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375219176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:24:19,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:24:19,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 16:24:19,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046265330] [2022-11-21 16:24:19,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:24:19,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:24:19,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:24:19,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:24:19,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:24:19,334 INFO L87 Difference]: Start difference. First operand 542 states and 870 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-21 16:24:31,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:24:31,260 INFO L93 Difference]: Finished difference Result 1504 states and 2483 transitions. [2022-11-21 16:24:31,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 16:24:31,260 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 77 [2022-11-21 16:24:31,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:24:31,270 INFO L225 Difference]: With dead ends: 1504 [2022-11-21 16:24:31,270 INFO L226 Difference]: Without dead ends: 1027 [2022-11-21 16:24:31,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2022-11-21 16:24:31,274 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 2303 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 8223 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2366 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 8762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 8223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:24:31,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2366 Valid, 2695 Invalid, 8762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [539 Valid, 8223 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-21 16:24:31,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-11-21 16:24:31,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 765. [2022-11-21 16:24:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 611 states have (on average 1.6219312602291325) internal successors, (991), 632 states have internal predecessors, (991), 119 states have call successors, (119), 33 states have call predecessors, (119), 34 states have return successors, (122), 113 states have call predecessors, (122), 114 states have call successors, (122) [2022-11-21 16:24:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1232 transitions. [2022-11-21 16:24:31,513 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1232 transitions. Word has length 77 [2022-11-21 16:24:31,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:24:31,514 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1232 transitions. [2022-11-21 16:24:31,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-21 16:24:31,514 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1232 transitions. [2022-11-21 16:24:31,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 16:24:31,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:24:31,518 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] [2022-11-21 16:24:31,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:24:31,518 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:24:31,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:24:31,519 INFO L85 PathProgramCache]: Analyzing trace with hash -240927220, now seen corresponding path program 1 times [2022-11-21 16:24:31,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:24:31,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100319102] [2022-11-21 16:24:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:24:31,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:24:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:31,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:24:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:31,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:31,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:24:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:31,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:24:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:31,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:31,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:31,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:24:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:24:31,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:24:31,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100319102] [2022-11-21 16:24:31,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100319102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:24:31,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:24:31,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:24:31,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491160999] [2022-11-21 16:24:31,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:24:31,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:24:31,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:24:31,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:24:31,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:24:31,972 INFO L87 Difference]: Start difference. First operand 765 states and 1232 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:24:38,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:24:38,183 INFO L93 Difference]: Finished difference Result 1668 states and 2736 transitions. [2022-11-21 16:24:38,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:24:38,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2022-11-21 16:24:38,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:24:38,189 INFO L225 Difference]: With dead ends: 1668 [2022-11-21 16:24:38,190 INFO L226 Difference]: Without dead ends: 952 [2022-11-21 16:24:38,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:24:38,193 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 711 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 2651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:24:38,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1137 Invalid, 2651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-21 16:24:38,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-11-21 16:24:38,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 765. [2022-11-21 16:24:38,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 611 states have (on average 1.6153846153846154) internal successors, (987), 632 states have internal predecessors, (987), 119 states have call successors, (119), 33 states have call predecessors, (119), 34 states have return successors, (122), 113 states have call predecessors, (122), 114 states have call successors, (122) [2022-11-21 16:24:38,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1228 transitions. [2022-11-21 16:24:38,412 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1228 transitions. Word has length 77 [2022-11-21 16:24:38,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:24:38,413 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1228 transitions. [2022-11-21 16:24:38,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 16:24:38,413 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1228 transitions. [2022-11-21 16:24:38,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 16:24:38,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:24:38,415 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] [2022-11-21 16:24:38,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 16:24:38,416 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:24:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:24:38,417 INFO L85 PathProgramCache]: Analyzing trace with hash 112161162, now seen corresponding path program 1 times [2022-11-21 16:24:38,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:24:38,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068366840] [2022-11-21 16:24:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:24:38,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:24:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:38,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:24:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:38,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:38,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:24:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:38,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:24:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:39,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:39,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:39,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:24:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:39,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:24:39,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:24:39,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068366840] [2022-11-21 16:24:39,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068366840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:24:39,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:24:39,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:24:39,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735248281] [2022-11-21 16:24:39,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:24:39,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:24:39,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:24:39,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:24:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:24:39,130 INFO L87 Difference]: Start difference. First operand 765 states and 1228 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-21 16:24:52,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:24:52,505 INFO L93 Difference]: Finished difference Result 2671 states and 4478 transitions. [2022-11-21 16:24:52,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:24:52,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 77 [2022-11-21 16:24:52,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:24:52,519 INFO L225 Difference]: With dead ends: 2671 [2022-11-21 16:24:52,519 INFO L226 Difference]: Without dead ends: 1985 [2022-11-21 16:24:52,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:24:52,523 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 2597 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 4856 mSolverCounterSat, 684 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2674 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 5540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 4856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:24:52,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2674 Valid, 1671 Invalid, 5540 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [684 Valid, 4856 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2022-11-21 16:24:52,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-11-21 16:24:52,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1455. [2022-11-21 16:24:52,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1166 states have (on average 1.6423670668953687) internal successors, (1915), 1196 states have internal predecessors, (1915), 223 states have call successors, (223), 59 states have call predecessors, (223), 65 states have return successors, (243), 212 states have call predecessors, (243), 218 states have call successors, (243) [2022-11-21 16:24:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 2381 transitions. [2022-11-21 16:24:52,952 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 2381 transitions. Word has length 77 [2022-11-21 16:24:52,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:24:52,952 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 2381 transitions. [2022-11-21 16:24:52,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-21 16:24:52,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 2381 transitions. [2022-11-21 16:24:52,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-21 16:24:52,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:24:52,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:24:52,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 16:24:52,957 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:24:52,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:24:52,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1484179961, now seen corresponding path program 1 times [2022-11-21 16:24:52,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:24:52,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63021350] [2022-11-21 16:24:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:24:52,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:24:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:53,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:24:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:53,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:53,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:24:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:53,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:24:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:53,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:53,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:24:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:54,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:54,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 16:24:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:54,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 16:24:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:54,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:24:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:54,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 16:24:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:24:54,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:24:54,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63021350] [2022-11-21 16:24:54,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63021350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:24:54,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:24:54,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 16:24:54,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487816492] [2022-11-21 16:24:54,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:24:54,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:24:54,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:24:54,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:24:54,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:24:54,191 INFO L87 Difference]: Start difference. First operand 1455 states and 2381 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-21 16:25:04,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:25:04,987 INFO L93 Difference]: Finished difference Result 3658 states and 6195 transitions. [2022-11-21 16:25:04,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:25:04,988 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 107 [2022-11-21 16:25:04,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:25:05,001 INFO L225 Difference]: With dead ends: 3658 [2022-11-21 16:25:05,001 INFO L226 Difference]: Without dead ends: 2282 [2022-11-21 16:25:05,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=147, Invalid=273, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:25:05,008 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 2836 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 3358 mSolverCounterSat, 1348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 4706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1348 IncrementalHoareTripleChecker+Valid, 3358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:25:05,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2836 Valid, 1635 Invalid, 4706 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1348 Valid, 3358 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-21 16:25:05,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2022-11-21 16:25:05,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 1463. [2022-11-21 16:25:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1172 states have (on average 1.6390784982935154) internal successors, (1921), 1202 states have internal predecessors, (1921), 223 states have call successors, (223), 59 states have call predecessors, (223), 67 states have return successors, (245), 212 states have call predecessors, (245), 218 states have call successors, (245) [2022-11-21 16:25:05,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2389 transitions. [2022-11-21 16:25:05,518 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2389 transitions. Word has length 107 [2022-11-21 16:25:05,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:25:05,519 INFO L495 AbstractCegarLoop]: Abstraction has 1463 states and 2389 transitions. [2022-11-21 16:25:05,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-21 16:25:05,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2389 transitions. [2022-11-21 16:25:05,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-21 16:25:05,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:25:05,525 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:25:05,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 16:25:05,526 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:25:05,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:05,526 INFO L85 PathProgramCache]: Analyzing trace with hash 210734150, now seen corresponding path program 1 times [2022-11-21 16:25:05,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:05,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661480417] [2022-11-21 16:25:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:05,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:05,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:25:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:05,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:25:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:05,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:25:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:06,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:25:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:06,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:25:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:06,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:25:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:06,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:25:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:06,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:25:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:25:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:06,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 16:25:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:06,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 16:25:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:06,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 16:25:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:25:06,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:06,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661480417] [2022-11-21 16:25:06,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661480417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:25:06,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:25:06,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:25:06,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175624287] [2022-11-21 16:25:06,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:25:06,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:25:06,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:06,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:25:06,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:25:06,563 INFO L87 Difference]: Start difference. First operand 1463 states and 2389 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:25:21,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:25:21,571 INFO L93 Difference]: Finished difference Result 5189 states and 8877 transitions. [2022-11-21 16:25:21,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 16:25:21,572 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2022-11-21 16:25:21,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:25:21,591 INFO L225 Difference]: With dead ends: 5189 [2022-11-21 16:25:21,591 INFO L226 Difference]: Without dead ends: 3805 [2022-11-21 16:25:21,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2022-11-21 16:25:21,599 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 4143 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 5206 mSolverCounterSat, 1388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4208 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 6594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1388 IncrementalHoareTripleChecker+Valid, 5206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:25:21,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4208 Valid, 2468 Invalid, 6594 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1388 Valid, 5206 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2022-11-21 16:25:21,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2022-11-21 16:25:22,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 2916. [2022-11-21 16:25:22,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2345 states have (on average 1.6456289978678038) internal successors, (3859), 2393 states have internal predecessors, (3859), 428 states have call successors, (428), 109 states have call predecessors, (428), 142 states have return successors, (546), 435 states have call predecessors, (546), 423 states have call successors, (546) [2022-11-21 16:25:22,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4833 transitions. [2022-11-21 16:25:22,568 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4833 transitions. Word has length 110 [2022-11-21 16:25:22,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:25:22,568 INFO L495 AbstractCegarLoop]: Abstraction has 2916 states and 4833 transitions. [2022-11-21 16:25:22,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:25:22,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4833 transitions. [2022-11-21 16:25:22,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-21 16:25:22,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:25:22,591 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:25:22,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 16:25:22,592 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:25:22,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:22,592 INFO L85 PathProgramCache]: Analyzing trace with hash 207824670, now seen corresponding path program 1 times [2022-11-21 16:25:22,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:22,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241408619] [2022-11-21 16:25:22,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:22,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:22,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:25:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:22,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:25:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:22,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:25:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:23,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:25:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:23,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:25:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:23,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:25:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:23,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:25:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:23,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:25:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:23,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:25:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:23,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 16:25:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:23,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 16:25:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:23,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 16:25:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:25:23,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:23,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241408619] [2022-11-21 16:25:23,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241408619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:25:23,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:25:23,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 16:25:23,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669169238] [2022-11-21 16:25:23,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:25:23,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:25:23,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:23,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:25:23,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:25:23,491 INFO L87 Difference]: Start difference. First operand 2916 states and 4833 transitions. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-21 16:25:59,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:25:59,922 INFO L93 Difference]: Finished difference Result 11305 states and 20157 transitions. [2022-11-21 16:25:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-21 16:25:59,923 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 114 [2022-11-21 16:25:59,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:25:59,968 INFO L225 Difference]: With dead ends: 11305 [2022-11-21 16:25:59,968 INFO L226 Difference]: Without dead ends: 8459 [2022-11-21 16:25:59,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=734, Invalid=2128, Unknown=0, NotChecked=0, Total=2862 [2022-11-21 16:25:59,994 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 8678 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 10096 mSolverCounterSat, 3439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8757 SdHoareTripleChecker+Valid, 3282 SdHoareTripleChecker+Invalid, 13535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3439 IncrementalHoareTripleChecker+Valid, 10096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:25:59,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8757 Valid, 3282 Invalid, 13535 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3439 Valid, 10096 Invalid, 0 Unknown, 0 Unchecked, 25.4s Time] [2022-11-21 16:26:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8459 states. [2022-11-21 16:26:02,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8459 to 6574. [2022-11-21 16:26:02,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6574 states, 5263 states have (on average 1.6009880296408892) internal successors, (8426), 5384 states have internal predecessors, (8426), 959 states have call successors, (959), 283 states have call predecessors, (959), 351 states have return successors, (1402), 961 states have call predecessors, (1402), 954 states have call successors, (1402) [2022-11-21 16:26:02,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6574 states to 6574 states and 10787 transitions. [2022-11-21 16:26:02,121 INFO L78 Accepts]: Start accepts. Automaton has 6574 states and 10787 transitions. Word has length 114 [2022-11-21 16:26:02,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:26:02,121 INFO L495 AbstractCegarLoop]: Abstraction has 6574 states and 10787 transitions. [2022-11-21 16:26:02,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-21 16:26:02,121 INFO L276 IsEmpty]: Start isEmpty. Operand 6574 states and 10787 transitions. [2022-11-21 16:26:02,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-21 16:26:02,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:26:02,128 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:26:02,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 16:26:02,128 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:26:02,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:26:02,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2088298506, now seen corresponding path program 1 times [2022-11-21 16:26:02,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:26:02,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566914208] [2022-11-21 16:26:02,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:02,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:26:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:26:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:02,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:26:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:02,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:26:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:02,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:26:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:02,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:26:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:02,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:26:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:26:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:03,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:26:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:03,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:26:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:26:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:03,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 16:26:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:03,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 16:26:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 16:26:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:26:03,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:26:03,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566914208] [2022-11-21 16:26:03,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566914208] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:26:03,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360723115] [2022-11-21 16:26:03,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:03,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:26:03,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:26:03,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:26:03,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:26:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:03,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:26:03,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:26:03,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:26:03,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:26:03,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360723115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:26:03,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:26:03,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2022-11-21 16:26:03,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434389222] [2022-11-21 16:26:03,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:26:03,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:26:03,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:26:03,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:26:03,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:26:03,986 INFO L87 Difference]: Start difference. First operand 6574 states and 10787 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-21 16:26:11,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:26:11,838 INFO L93 Difference]: Finished difference Result 17990 states and 30397 transitions. [2022-11-21 16:26:11,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:26:11,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 122 [2022-11-21 16:26:11,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:26:11,900 INFO L225 Difference]: With dead ends: 17990 [2022-11-21 16:26:11,901 INFO L226 Difference]: Without dead ends: 11494 [2022-11-21 16:26:11,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:26:11,937 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 2201 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 3358 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2327 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 3846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 3358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:26:11,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2327 Valid, 1870 Invalid, 3846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 3358 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 16:26:11,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11494 states. [2022-11-21 16:26:15,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11494 to 10860. [2022-11-21 16:26:15,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10860 states, 8465 states have (on average 1.5912581216774955) internal successors, (13470), 8746 states have internal predecessors, (13470), 1826 states have call successors, (1826), 437 states have call predecessors, (1826), 568 states have return successors, (2810), 1871 states have call predecessors, (2810), 1821 states have call successors, (2810) [2022-11-21 16:26:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10860 states to 10860 states and 18106 transitions. [2022-11-21 16:26:15,516 INFO L78 Accepts]: Start accepts. Automaton has 10860 states and 18106 transitions. Word has length 122 [2022-11-21 16:26:15,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:26:15,517 INFO L495 AbstractCegarLoop]: Abstraction has 10860 states and 18106 transitions. [2022-11-21 16:26:15,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-21 16:26:15,517 INFO L276 IsEmpty]: Start isEmpty. Operand 10860 states and 18106 transitions. [2022-11-21 16:26:15,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-21 16:26:15,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:26:15,523 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] [2022-11-21 16:26:15,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:26:15,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d180cfd6-38e2-4551-bb4a-36c192cf0f91/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-21 16:26:15,731 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:26:15,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:26:15,731 INFO L85 PathProgramCache]: Analyzing trace with hash 514982175, now seen corresponding path program 1 times [2022-11-21 16:26:15,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:26:15,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018425331] [2022-11-21 16:26:15,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:15,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:26:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:16,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:26:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:16,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:26:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:16,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:26:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:16,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:26:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:16,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:26:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:16,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:26:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:16,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:26:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:16,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:26:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:16,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:26:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:16,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:26:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:16,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 16:26:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:16,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 16:26:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:16,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:26:16,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:26:16,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018425331] [2022-11-21 16:26:16,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018425331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:26:16,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:26:16,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-21 16:26:16,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045002045] [2022-11-21 16:26:16,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:26:16,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 16:26:16,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:26:16,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 16:26:16,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:26:16,873 INFO L87 Difference]: Start difference. First operand 10860 states and 18106 transitions. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-21 16:26:38,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:26:38,837 INFO L93 Difference]: Finished difference Result 26794 states and 46681 transitions. [2022-11-21 16:26:38,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 16:26:38,838 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 121 [2022-11-21 16:26:38,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:26:38,939 INFO L225 Difference]: With dead ends: 26794 [2022-11-21 16:26:38,940 INFO L226 Difference]: Without dead ends: 14323 [2022-11-21 16:26:39,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=222, Invalid=770, Unknown=0, NotChecked=0, Total=992 [2022-11-21 16:26:39,017 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 2530 mSDsluCounter, 3623 mSDsCounter, 0 mSdLazyCounter, 8511 mSolverCounterSat, 727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2552 SdHoareTripleChecker+Valid, 4163 SdHoareTripleChecker+Invalid, 9238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 727 IncrementalHoareTripleChecker+Valid, 8511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:26:39,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2552 Valid, 4163 Invalid, 9238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [727 Valid, 8511 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2022-11-21 16:26:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14323 states. [2022-11-21 16:26:43,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14323 to 10860. [2022-11-21 16:26:43,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10860 states, 8465 states have (on average 1.567158889545186) internal successors, (13266), 8746 states have internal predecessors, (13266), 1826 states have call successors, (1826), 437 states have call predecessors, (1826), 568 states have return successors, (2810), 1871 states have call predecessors, (2810), 1821 states have call successors, (2810) [2022-11-21 16:26:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10860 states to 10860 states and 17902 transitions. [2022-11-21 16:26:43,139 INFO L78 Accepts]: Start accepts. Automaton has 10860 states and 17902 transitions. Word has length 121 [2022-11-21 16:26:43,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:26:43,140 INFO L495 AbstractCegarLoop]: Abstraction has 10860 states and 17902 transitions. [2022-11-21 16:26:43,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-21 16:26:43,140 INFO L276 IsEmpty]: Start isEmpty. Operand 10860 states and 17902 transitions. [2022-11-21 16:26:43,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-21 16:26:43,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:26:43,146 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:26:43,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 16:26:43,146 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:26:43,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:26:43,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1897428458, now seen corresponding path program 1 times [2022-11-21 16:26:43,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:26:43,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900508195] [2022-11-21 16:26:43,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:26:43,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:26:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:43,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:26:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:43,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:26:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:43,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:26:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:26:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:43,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:26:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:44,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:26:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:44,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:26:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:44,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:26:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:44,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:26:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:44,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 16:26:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-21 16:26:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:44,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 16:26:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:44,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 16:26:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:26:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:26:44,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:26:44,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900508195] [2022-11-21 16:26:44,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900508195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:26:44,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:26:44,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 16:26:44,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874143089] [2022-11-21 16:26:44,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:26:44,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:26:44,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:26:44,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:26:44,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:26:44,366 INFO L87 Difference]: Start difference. First operand 10860 states and 17902 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-21 16:27:07,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:27:07,305 INFO L93 Difference]: Finished difference Result 25816 states and 45079 transitions. [2022-11-21 16:27:07,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-21 16:27:07,306 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2022-11-21 16:27:07,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:27:07,408 INFO L225 Difference]: With dead ends: 25816 [2022-11-21 16:27:07,409 INFO L226 Difference]: Without dead ends: 15037 [2022-11-21 16:27:07,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 16:27:07,468 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 5230 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 6927 mSolverCounterSat, 1734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5290 SdHoareTripleChecker+Valid, 3228 SdHoareTripleChecker+Invalid, 8661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1734 IncrementalHoareTripleChecker+Valid, 6927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:27:07,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5290 Valid, 3228 Invalid, 8661 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1734 Valid, 6927 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-11-21 16:27:07,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2022-11-21 16:27:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 11088. [2022-11-21 16:27:11,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11088 states, 8579 states have (on average 1.5596223336053152) internal successors, (13380), 8938 states have internal predecessors, (13380), 1862 states have call successors, (1862), 437 states have call predecessors, (1862), 646 states have return successors, (3146), 1907 states have call predecessors, (3146), 1857 states have call successors, (3146) [2022-11-21 16:27:11,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11088 states to 11088 states and 18388 transitions. [2022-11-21 16:27:11,405 INFO L78 Accepts]: Start accepts. Automaton has 11088 states and 18388 transitions. Word has length 123 [2022-11-21 16:27:11,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:27:11,406 INFO L495 AbstractCegarLoop]: Abstraction has 11088 states and 18388 transitions. [2022-11-21 16:27:11,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-21 16:27:11,406 INFO L276 IsEmpty]: Start isEmpty. Operand 11088 states and 18388 transitions. [2022-11-21 16:27:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-21 16:27:11,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:27:11,412 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:27:11,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 16:27:11,412 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:27:11,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:27:11,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2061516223, now seen corresponding path program 1 times [2022-11-21 16:27:11,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:27:11,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100916027] [2022-11-21 16:27:11,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:11,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:27:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:11,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:27:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:11,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:27:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:11,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:27:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:11,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:27:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:12,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:27:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:12,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:27:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:12,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:27:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:12,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:27:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:12,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:27:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:12,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:27:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:12,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:27:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:12,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:27:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:12,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 16:27:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:27:12,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:27:12,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100916027] [2022-11-21 16:27:12,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100916027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:27:12,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:27:12,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 16:27:12,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571989725] [2022-11-21 16:27:12,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:27:12,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:27:12,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:27:12,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:27:12,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:27:12,372 INFO L87 Difference]: Start difference. First operand 11088 states and 18388 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-21 16:27:35,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:27:35,669 INFO L93 Difference]: Finished difference Result 27680 states and 48012 transitions. [2022-11-21 16:27:35,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 16:27:35,671 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 126 [2022-11-21 16:27:35,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:27:35,780 INFO L225 Difference]: With dead ends: 27680 [2022-11-21 16:27:35,780 INFO L226 Difference]: Without dead ends: 16669 [2022-11-21 16:27:35,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2022-11-21 16:27:35,833 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 4421 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 6351 mSolverCounterSat, 1403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4477 SdHoareTripleChecker+Valid, 2659 SdHoareTripleChecker+Invalid, 7754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1403 IncrementalHoareTripleChecker+Valid, 6351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:27:35,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4477 Valid, 2659 Invalid, 7754 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1403 Valid, 6351 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2022-11-21 16:27:35,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16669 states. [2022-11-21 16:27:41,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16669 to 12864. [2022-11-21 16:27:41,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12864 states, 10001 states have (on average 1.5412458754124587) internal successors, (15414), 10402 states have internal predecessors, (15414), 2078 states have call successors, (2078), 551 states have call predecessors, (2078), 784 states have return successors, (3566), 2105 states have call predecessors, (3566), 2073 states have call successors, (3566) [2022-11-21 16:27:41,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12864 states to 12864 states and 21058 transitions. [2022-11-21 16:27:41,343 INFO L78 Accepts]: Start accepts. Automaton has 12864 states and 21058 transitions. Word has length 126 [2022-11-21 16:27:41,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:27:41,344 INFO L495 AbstractCegarLoop]: Abstraction has 12864 states and 21058 transitions. [2022-11-21 16:27:41,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-21 16:27:41,345 INFO L276 IsEmpty]: Start isEmpty. Operand 12864 states and 21058 transitions. [2022-11-21 16:27:41,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-21 16:27:41,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:27:41,354 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:27:41,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 16:27:41,355 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:27:41,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:27:41,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1519227023, now seen corresponding path program 1 times [2022-11-21 16:27:41,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:27:41,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411579029] [2022-11-21 16:27:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:41,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:27:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:41,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:27:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:41,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:27:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:41,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:27:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:41,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:27:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:42,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:27:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:42,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:27:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:42,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:27:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:42,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:27:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:42,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:27:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:42,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:27:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:42,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 16:27:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:42,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:27:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:42,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:27:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:27:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:42,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 16:27:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 16:27:42,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:27:42,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411579029] [2022-11-21 16:27:42,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411579029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:27:42,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:27:42,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:27:42,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960749592] [2022-11-21 16:27:42,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:27:42,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:27:42,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:27:42,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:27:42,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:27:42,422 INFO L87 Difference]: Start difference. First operand 12864 states and 21058 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 16:27:59,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:27:59,375 INFO L93 Difference]: Finished difference Result 16781 states and 29268 transitions. [2022-11-21 16:27:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:27:59,375 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2022-11-21 16:27:59,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:27:59,483 INFO L225 Difference]: With dead ends: 16781 [2022-11-21 16:27:59,484 INFO L226 Difference]: Without dead ends: 16766 [2022-11-21 16:27:59,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:27:59,500 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 2708 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 4057 mSolverCounterSat, 939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2721 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 4996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 4057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:27:59,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2721 Valid, 1802 Invalid, 4996 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [939 Valid, 4057 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-21 16:27:59,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16766 states. [2022-11-21 16:28:04,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16766 to 12885. [2022-11-21 16:28:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12885 states, 10022 states have (on average 1.54011175414089) internal successors, (15435), 10423 states have internal predecessors, (15435), 2078 states have call successors, (2078), 551 states have call predecessors, (2078), 784 states have return successors, (3566), 2105 states have call predecessors, (3566), 2073 states have call successors, (3566) [2022-11-21 16:28:04,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12885 states to 12885 states and 21079 transitions. [2022-11-21 16:28:04,786 INFO L78 Accepts]: Start accepts. Automaton has 12885 states and 21079 transitions. Word has length 133 [2022-11-21 16:28:04,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:28:04,786 INFO L495 AbstractCegarLoop]: Abstraction has 12885 states and 21079 transitions. [2022-11-21 16:28:04,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 16:28:04,787 INFO L276 IsEmpty]: Start isEmpty. Operand 12885 states and 21079 transitions. [2022-11-21 16:28:04,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-21 16:28:04,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:28:04,794 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:28:04,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 16:28:04,795 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:28:04,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:04,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1516895444, now seen corresponding path program 1 times [2022-11-21 16:28:04,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:04,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663664703] [2022-11-21 16:28:04,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:04,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:28:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:28:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:28:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:28:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:28:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:28:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:28:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:28:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:28:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:28:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 16:28:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:28:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:28:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:28:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 16:28:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 16:28:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 16:28:05,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:05,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663664703] [2022-11-21 16:28:05,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663664703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:05,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:05,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 16:28:05,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278426839] [2022-11-21 16:28:05,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:05,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:28:05,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:05,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:28:05,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:28:05,859 INFO L87 Difference]: Start difference. First operand 12885 states and 21079 transitions. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 16:28:23,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:28:23,658 INFO L93 Difference]: Finished difference Result 17516 states and 30582 transitions. [2022-11-21 16:28:23,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 16:28:23,659 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) Word has length 139 [2022-11-21 16:28:23,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:28:23,881 INFO L225 Difference]: With dead ends: 17516 [2022-11-21 16:28:23,881 INFO L226 Difference]: Without dead ends: 17501 [2022-11-21 16:28:23,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 16:28:23,893 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 2946 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 4123 mSolverCounterSat, 1005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2959 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 5128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1005 IncrementalHoareTripleChecker+Valid, 4123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:28:23,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2959 Valid, 2398 Invalid, 5128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1005 Valid, 4123 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-21 16:28:23,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17501 states. [2022-11-21 16:28:29,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17501 to 13495. [2022-11-21 16:28:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13495 states, 10506 states have (on average 1.5357890729107178) internal successors, (16135), 10907 states have internal predecessors, (16135), 2158 states have call successors, (2158), 601 states have call predecessors, (2158), 830 states have return successors, (3762), 2181 states have call predecessors, (3762), 2153 states have call successors, (3762) [2022-11-21 16:28:29,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13495 states to 13495 states and 22055 transitions. [2022-11-21 16:28:29,108 INFO L78 Accepts]: Start accepts. Automaton has 13495 states and 22055 transitions. Word has length 139 [2022-11-21 16:28:29,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:28:29,108 INFO L495 AbstractCegarLoop]: Abstraction has 13495 states and 22055 transitions. [2022-11-21 16:28:29,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 16:28:29,108 INFO L276 IsEmpty]: Start isEmpty. Operand 13495 states and 22055 transitions. [2022-11-21 16:28:29,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-21 16:28:29,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:28:29,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:28:29,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-21 16:28:29,114 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:28:29,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:29,114 INFO L85 PathProgramCache]: Analyzing trace with hash -152286151, now seen corresponding path program 1 times [2022-11-21 16:28:29,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:29,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065952178] [2022-11-21 16:28:29,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:29,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:29,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:28:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:29,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:28:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:29,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:28:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:29,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:28:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:29,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:28:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:29,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:28:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:28:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:30,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:28:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:30,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:28:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:30,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:28:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:30,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 16:28:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:30,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:28:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:30,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:28:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:30,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:28:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:30,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 16:28:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:30,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 16:28:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:30,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 16:28:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 16:28:30,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:30,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065952178] [2022-11-21 16:28:30,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065952178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:30,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:30,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-21 16:28:30,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124091286] [2022-11-21 16:28:30,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:30,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 16:28:30,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:30,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 16:28:30,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:28:30,326 INFO L87 Difference]: Start difference. First operand 13495 states and 22055 transitions. Second operand has 14 states, 14 states have (on average 7.714285714285714) internal successors, (108), 8 states have internal predecessors, (108), 4 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 16:28:51,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:28:51,925 INFO L93 Difference]: Finished difference Result 33031 states and 57736 transitions. [2022-11-21 16:28:51,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 16:28:51,926 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.714285714285714) internal successors, (108), 8 states have internal predecessors, (108), 4 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 3 states have call successors, (17) Word has length 150 [2022-11-21 16:28:51,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:28:52,087 INFO L225 Difference]: With dead ends: 33031 [2022-11-21 16:28:52,088 INFO L226 Difference]: Without dead ends: 19630 [2022-11-21 16:28:52,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=260, Invalid=862, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 16:28:52,168 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 3168 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 6174 mSolverCounterSat, 1446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3168 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 7620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1446 IncrementalHoareTripleChecker+Valid, 6174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:28:52,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3168 Valid, 2586 Invalid, 7620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1446 Valid, 6174 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-21 16:28:52,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19630 states. [2022-11-21 16:28:58,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19630 to 13567. [2022-11-21 16:28:58,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13567 states, 10560 states have (on average 1.528693181818182) internal successors, (16143), 10961 states have internal predecessors, (16143), 2158 states have call successors, (2158), 601 states have call predecessors, (2158), 848 states have return successors, (3960), 2199 states have call predecessors, (3960), 2153 states have call successors, (3960) [2022-11-21 16:28:58,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13567 states to 13567 states and 22261 transitions. [2022-11-21 16:28:58,111 INFO L78 Accepts]: Start accepts. Automaton has 13567 states and 22261 transitions. Word has length 150 [2022-11-21 16:28:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:28:58,111 INFO L495 AbstractCegarLoop]: Abstraction has 13567 states and 22261 transitions. [2022-11-21 16:28:58,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.714285714285714) internal successors, (108), 8 states have internal predecessors, (108), 4 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 16:28:58,112 INFO L276 IsEmpty]: Start isEmpty. Operand 13567 states and 22261 transitions. [2022-11-21 16:28:58,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-21 16:28:58,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:28:58,116 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:28:58,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-21 16:28:58,117 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:28:58,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:58,117 INFO L85 PathProgramCache]: Analyzing trace with hash -202531907, now seen corresponding path program 1 times [2022-11-21 16:28:58,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:28:58,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751445729] [2022-11-21 16:28:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:28:58,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:28:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:58,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:28:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:58,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:28:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:58,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:28:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:58,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:28:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:58,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:28:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:58,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:28:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:59,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:28:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:59,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:28:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:59,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:28:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:59,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:28:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:59,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 16:28:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:59,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:28:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:59,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:28:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:59,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:28:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:59,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 16:28:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:59,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 16:28:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:59,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 16:28:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:28:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 16:28:59,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:28:59,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751445729] [2022-11-21 16:28:59,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751445729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:28:59,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:28:59,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:28:59,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374220724] [2022-11-21 16:28:59,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:28:59,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:28:59,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:28:59,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:28:59,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:28:59,179 INFO L87 Difference]: Start difference. First operand 13567 states and 22261 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 5 states have internal predecessors, (109), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 16:29:45,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:29:45,686 INFO L93 Difference]: Finished difference Result 54914 states and 101681 transitions. [2022-11-21 16:29:45,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 16:29:45,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 5 states have internal predecessors, (109), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 151 [2022-11-21 16:29:45,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:29:46,004 INFO L225 Difference]: With dead ends: 54914 [2022-11-21 16:29:46,004 INFO L226 Difference]: Without dead ends: 41445 [2022-11-21 16:29:46,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2022-11-21 16:29:46,096 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 4885 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 5594 mSolverCounterSat, 1993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4945 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 7587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1993 IncrementalHoareTripleChecker+Valid, 5594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:29:46,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4945 Valid, 2361 Invalid, 7587 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1993 Valid, 5594 Invalid, 0 Unknown, 0 Unchecked, 17.9s Time] [2022-11-21 16:29:46,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41445 states. [2022-11-21 16:30:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41445 to 29164. [2022-11-21 16:30:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29164 states, 21970 states have (on average 1.5100136549840693) internal successors, (33175), 23079 states have internal predecessors, (33175), 5378 states have call successors, (5378), 1173 states have call predecessors, (5378), 1815 states have return successors, (10859), 5591 states have call predecessors, (10859), 5373 states have call successors, (10859) [2022-11-21 16:30:01,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29164 states to 29164 states and 49412 transitions. [2022-11-21 16:30:01,413 INFO L78 Accepts]: Start accepts. Automaton has 29164 states and 49412 transitions. Word has length 151 [2022-11-21 16:30:01,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:30:01,414 INFO L495 AbstractCegarLoop]: Abstraction has 29164 states and 49412 transitions. [2022-11-21 16:30:01,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 5 states have internal predecessors, (109), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 16:30:01,415 INFO L276 IsEmpty]: Start isEmpty. Operand 29164 states and 49412 transitions. [2022-11-21 16:30:01,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-21 16:30:01,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:30:01,424 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:30:01,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-21 16:30:01,424 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:30:01,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:01,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1940489270, now seen corresponding path program 1 times [2022-11-21 16:30:01,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:01,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435798500] [2022-11-21 16:30:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:01,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:01,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:30:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:01,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:30:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:01,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:30:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:01,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:30:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:01,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:30:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:01,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:30:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:02,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:30:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:02,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:30:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:02,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:30:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:02,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:30:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:02,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:30:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:02,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:30:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:02,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:30:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:02,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 16:30:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:02,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 16:30:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:02,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 16:30:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:02,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-21 16:30:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-21 16:30:02,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:02,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435798500] [2022-11-21 16:30:02,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435798500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:02,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:30:02,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:30:02,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955030740] [2022-11-21 16:30:02,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:02,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:30:02,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:02,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:30:02,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:30:02,161 INFO L87 Difference]: Start difference. First operand 29164 states and 49412 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 16:31:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:31:02,414 INFO L93 Difference]: Finished difference Result 102408 states and 199725 transitions. [2022-11-21 16:31:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:31:02,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 157 [2022-11-21 16:31:02,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:31:03,309 INFO L225 Difference]: With dead ends: 102408 [2022-11-21 16:31:03,309 INFO L226 Difference]: Without dead ends: 73322 [2022-11-21 16:31:03,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:31:03,476 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 4710 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 1375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4782 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 3696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1375 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:31:03,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4782 Valid, 1244 Invalid, 3696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1375 Valid, 2321 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-21 16:31:03,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73322 states.