./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS --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 71189e3cc465fa9296e61b90c4b4428a637cf1ec8723797967b75b70226f0c15 --- 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-4e7fbc6 [2022-11-23 02:41:52,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:41:52,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:41:52,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:41:52,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:41:52,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:41:52,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:41:52,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:41:52,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:41:52,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:41:52,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:41:52,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:41:52,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:41:52,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:41:52,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:41:52,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:41:52,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:41:52,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:41:52,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:41:52,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:41:52,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:41:52,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:41:52,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:41:52,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:41:52,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:41:52,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:41:52,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:41:52,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:41:52,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:41:52,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:41:52,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:41:52,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:41:52,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:41:52,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:41:52,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:41:52,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:41:52,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:41:52,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:41:52,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:41:52,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:41:52,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:41:52,998 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:41:53,037 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:41:53,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:41:53,038 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:41:53,038 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:41:53,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:41:53,040 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:41:53,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:41:53,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:41:53,041 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:41:53,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:41:53,042 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:41:53,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:41:53,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:41:53,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:41:53,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:41:53,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:41:53,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:41:53,043 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:41:53,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:41:53,044 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:41:53,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:41:53,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:41:53,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:41:53,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:41:53,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:41:53,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:41:53,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:41:53,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:41:53,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:41:53,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:41:53,046 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:41:53,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:41:53,047 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:41:53,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:41:53,047 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71189e3cc465fa9296e61b90c4b4428a637cf1ec8723797967b75b70226f0c15 [2022-11-23 02:41:53,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:41:53,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:41:53,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:41:53,390 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:41:53,391 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:41:53,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c [2022-11-23 02:41:56,412 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:41:56,748 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:41:56,749 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c [2022-11-23 02:41:56,764 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/data/8fa4c5537/b9ba9d79b64f467a8a3f396d0cd69896/FLAGb3736b61e [2022-11-23 02:41:56,781 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/data/8fa4c5537/b9ba9d79b64f467a8a3f396d0cd69896 [2022-11-23 02:41:56,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:41:56,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:41:56,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:41:56,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:41:56,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:41:56,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:41:56" (1/1) ... [2022-11-23 02:41:56,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aebb4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:56, skipping insertion in model container [2022-11-23 02:41:56,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:41:56" (1/1) ... [2022-11-23 02:41:56,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:41:56,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:41:57,025 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_2963523a-cbec-4b62-a43c-e4fcf01c1525/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c[913,926] [2022-11-23 02:41:57,075 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_2963523a-cbec-4b62-a43c-e4fcf01c1525/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c[5977,5990] [2022-11-23 02:41:57,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:41:57,239 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:41:57,256 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_2963523a-cbec-4b62-a43c-e4fcf01c1525/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c[913,926] [2022-11-23 02:41:57,273 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_2963523a-cbec-4b62-a43c-e4fcf01c1525/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c[5977,5990] [2022-11-23 02:41:57,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:41:57,356 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:41:57,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:57 WrapperNode [2022-11-23 02:41:57,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:41:57,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:41:57,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:41:57,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:41:57,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:57" (1/1) ... [2022-11-23 02:41:57,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:57" (1/1) ... [2022-11-23 02:41:57,424 INFO L138 Inliner]: procedures = 64, calls = 72, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 823 [2022-11-23 02:41:57,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:41:57,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:41:57,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:41:57,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:41:57,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:57" (1/1) ... [2022-11-23 02:41:57,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:57" (1/1) ... [2022-11-23 02:41:57,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:57" (1/1) ... [2022-11-23 02:41:57,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:57" (1/1) ... [2022-11-23 02:41:57,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:57" (1/1) ... [2022-11-23 02:41:57,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:57" (1/1) ... [2022-11-23 02:41:57,474 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:57" (1/1) ... [2022-11-23 02:41:57,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:57" (1/1) ... [2022-11-23 02:41:57,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:41:57,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:41:57,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:41:57,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:41:57,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:57" (1/1) ... [2022-11-23 02:41:57,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:41:57,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:41:57,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:41:57,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:41:57,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:41:57,607 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-23 02:41:57,608 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-23 02:41:57,610 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-11-23 02:41:57,610 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-11-23 02:41:57,611 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-23 02:41:57,612 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-23 02:41:57,612 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-23 02:41:57,612 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-23 02:41:57,613 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-23 02:41:57,613 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-23 02:41:57,613 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-23 02:41:57,613 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-23 02:41:57,613 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-23 02:41:57,614 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-23 02:41:57,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:41:57,614 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-23 02:41:57,614 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-23 02:41:57,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:41:57,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:41:57,615 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-23 02:41:57,615 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-23 02:41:57,808 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:41:57,811 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:41:58,816 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:41:58,828 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:41:58,828 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-23 02:41:58,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:41:58 BoogieIcfgContainer [2022-11-23 02:41:58,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:41:58,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:41:58,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:41:58,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:41:58,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:41:56" (1/3) ... [2022-11-23 02:41:58,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc1b6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:41:58, skipping insertion in model container [2022-11-23 02:41:58,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:57" (2/3) ... [2022-11-23 02:41:58,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc1b6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:41:58, skipping insertion in model container [2022-11-23 02:41:58,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:41:58" (3/3) ... [2022-11-23 02:41:58,841 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.08.cil-1.c [2022-11-23 02:41:58,860 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:41:58,860 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 02:41:58,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:41:58,932 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;@1189ec49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:41:58,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 02:41:58,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 354 states, 314 states have (on average 1.6305732484076434) internal successors, (512), 319 states have internal predecessors, (512), 28 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-23 02:41:58,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-23 02:41:58,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:41:58,953 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] [2022-11-23 02:41:58,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:41:58,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:41:58,960 INFO L85 PathProgramCache]: Analyzing trace with hash -728515796, now seen corresponding path program 1 times [2022-11-23 02:41:58,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:41:58,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613367448] [2022-11-23 02:41:58,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:41:58,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:41:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:59,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:41:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:59,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:41:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:41:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:41:59,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:41:59,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613367448] [2022-11-23 02:41:59,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613367448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:41:59,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:41:59,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:41:59,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046804837] [2022-11-23 02:41:59,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:41:59,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:41:59,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:41:59,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:41:59,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:41:59,443 INFO L87 Difference]: Start difference. First operand has 354 states, 314 states have (on average 1.6305732484076434) internal successors, (512), 319 states have internal predecessors, (512), 28 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 02:42:00,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:00,165 INFO L93 Difference]: Finished difference Result 695 states and 1111 transitions. [2022-11-23 02:42:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:42:00,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-11-23 02:42:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:00,181 INFO L225 Difference]: With dead ends: 695 [2022-11-23 02:42:00,181 INFO L226 Difference]: Without dead ends: 353 [2022-11-23 02:42:00,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:42:00,190 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 307 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:00,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 830 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 02:42:00,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-11-23 02:42:00,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 344. [2022-11-23 02:42:00,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 306 states have (on average 1.5326797385620916) internal successors, (469), 309 states have internal predecessors, (469), 28 states have call successors, (28), 9 states have call predecessors, (28), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-23 02:42:00,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 523 transitions. [2022-11-23 02:42:00,268 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 523 transitions. Word has length 44 [2022-11-23 02:42:00,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:00,269 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 523 transitions. [2022-11-23 02:42:00,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 02:42:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 523 transitions. [2022-11-23 02:42:00,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-23 02:42:00,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:00,272 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] [2022-11-23 02:42:00,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:42:00,273 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:00,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:00,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1116851370, now seen corresponding path program 1 times [2022-11-23 02:42:00,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:00,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849810520] [2022-11-23 02:42:00,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:00,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:00,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:42:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:00,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:42:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:00,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:00,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849810520] [2022-11-23 02:42:00,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849810520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:00,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:00,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:42:00,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131597455] [2022-11-23 02:42:00,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:00,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:42:00,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:00,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:42:00,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:42:00,425 INFO L87 Difference]: Start difference. First operand 344 states and 523 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:42:01,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:01,017 INFO L93 Difference]: Finished difference Result 476 states and 708 transitions. [2022-11-23 02:42:01,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:42:01,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-23 02:42:01,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:01,035 INFO L225 Difference]: With dead ends: 476 [2022-11-23 02:42:01,035 INFO L226 Difference]: Without dead ends: 414 [2022-11-23 02:42:01,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:42:01,042 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 695 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:01,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 668 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 02:42:01,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-11-23 02:42:01,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 408. [2022-11-23 02:42:01,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 363 states have (on average 1.5013774104683195) internal successors, (545), 367 states have internal predecessors, (545), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (36), 30 states have call predecessors, (36), 30 states have call successors, (36) [2022-11-23 02:42:01,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 613 transitions. [2022-11-23 02:42:01,098 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 613 transitions. Word has length 44 [2022-11-23 02:42:01,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:01,098 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 613 transitions. [2022-11-23 02:42:01,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:42:01,099 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 613 transitions. [2022-11-23 02:42:01,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 02:42:01,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:01,102 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] [2022-11-23 02:42:01,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:42:01,102 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:01,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:01,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1978263529, now seen corresponding path program 1 times [2022-11-23 02:42:01,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:01,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375410603] [2022-11-23 02:42:01,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:01,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:42:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-23 02:42:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:01,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:01,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375410603] [2022-11-23 02:42:01,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375410603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:01,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:01,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:42:01,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869377823] [2022-11-23 02:42:01,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:01,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:42:01,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:01,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:42:01,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:42:01,191 INFO L87 Difference]: Start difference. First operand 408 states and 613 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:42:01,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:01,698 INFO L93 Difference]: Finished difference Result 656 states and 953 transitions. [2022-11-23 02:42:01,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:42:01,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-23 02:42:01,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:01,704 INFO L225 Difference]: With dead ends: 656 [2022-11-23 02:42:01,704 INFO L226 Difference]: Without dead ends: 532 [2022-11-23 02:42:01,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:42:01,715 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 288 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:01,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 934 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 02:42:01,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-11-23 02:42:01,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 475. [2022-11-23 02:42:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 424 states have (on average 1.4834905660377358) internal successors, (629), 428 states have internal predecessors, (629), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (39), 33 states have call predecessors, (39), 33 states have call successors, (39) [2022-11-23 02:42:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 703 transitions. [2022-11-23 02:42:01,795 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 703 transitions. Word has length 45 [2022-11-23 02:42:01,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:01,796 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 703 transitions. [2022-11-23 02:42:01,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:42:01,798 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 703 transitions. [2022-11-23 02:42:01,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 02:42:01,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:01,809 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] [2022-11-23 02:42:01,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:42:01,810 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:01,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:01,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1032346306, now seen corresponding path program 1 times [2022-11-23 02:42:01,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:01,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741057078] [2022-11-23 02:42:01,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:01,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:42:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-23 02:42:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:01,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:01,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741057078] [2022-11-23 02:42:01,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741057078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:01,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:01,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:42:01,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843996524] [2022-11-23 02:42:01,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:01,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:42:01,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:01,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:42:01,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:42:01,928 INFO L87 Difference]: Start difference. First operand 475 states and 703 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:42:02,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:02,380 INFO L93 Difference]: Finished difference Result 883 states and 1262 transitions. [2022-11-23 02:42:02,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:42:02,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-23 02:42:02,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:02,386 INFO L225 Difference]: With dead ends: 883 [2022-11-23 02:42:02,386 INFO L226 Difference]: Without dead ends: 692 [2022-11-23 02:42:02,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:42:02,399 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 712 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:02,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 687 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 02:42:02,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-11-23 02:42:02,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 640. [2022-11-23 02:42:02,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 570 states have (on average 1.436842105263158) internal successors, (819), 577 states have internal predecessors, (819), 46 states have call successors, (46), 21 states have call predecessors, (46), 22 states have return successors, (56), 42 states have call predecessors, (56), 44 states have call successors, (56) [2022-11-23 02:42:02,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 921 transitions. [2022-11-23 02:42:02,472 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 921 transitions. Word has length 45 [2022-11-23 02:42:02,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:02,473 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 921 transitions. [2022-11-23 02:42:02,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:42:02,474 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 921 transitions. [2022-11-23 02:42:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-23 02:42:02,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:02,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:02,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:42:02,477 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:02,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:02,482 INFO L85 PathProgramCache]: Analyzing trace with hash 875979578, now seen corresponding path program 1 times [2022-11-23 02:42:02,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:02,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912954837] [2022-11-23 02:42:02,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:02,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:02,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:42:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:02,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 02:42:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:02,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-23 02:42:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 02:42:02,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:02,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912954837] [2022-11-23 02:42:02,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912954837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:02,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:02,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:42:02,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012222158] [2022-11-23 02:42:02,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:02,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:42:02,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:42:02,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:42:02,663 INFO L87 Difference]: Start difference. First operand 640 states and 921 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 02:42:03,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:03,262 INFO L93 Difference]: Finished difference Result 984 states and 1382 transitions. [2022-11-23 02:42:03,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:42:03,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-11-23 02:42:03,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:03,273 INFO L225 Difference]: With dead ends: 984 [2022-11-23 02:42:03,273 INFO L226 Difference]: Without dead ends: 747 [2022-11-23 02:42:03,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:42:03,276 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 272 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:03,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 984 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 02:42:03,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-23 02:42:03,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 709. [2022-11-23 02:42:03,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 630 states have (on average 1.4111111111111112) internal successors, (889), 638 states have internal predecessors, (889), 51 states have call successors, (51), 24 states have call predecessors, (51), 26 states have return successors, (65), 47 states have call predecessors, (65), 49 states have call successors, (65) [2022-11-23 02:42:03,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1005 transitions. [2022-11-23 02:42:03,359 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1005 transitions. Word has length 62 [2022-11-23 02:42:03,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:03,360 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 1005 transitions. [2022-11-23 02:42:03,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 02:42:03,360 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1005 transitions. [2022-11-23 02:42:03,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 02:42:03,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:03,363 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:03,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:42:03,364 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:03,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:03,365 INFO L85 PathProgramCache]: Analyzing trace with hash 263296175, now seen corresponding path program 1 times [2022-11-23 02:42:03,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:03,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363331041] [2022-11-23 02:42:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:03,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:42:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:03,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-23 02:42:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:03,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-23 02:42:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:03,453 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 02:42:03,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:03,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363331041] [2022-11-23 02:42:03,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363331041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:03,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:03,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:42:03,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888410666] [2022-11-23 02:42:03,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:03,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:42:03,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:03,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:42:03,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:42:03,458 INFO L87 Difference]: Start difference. First operand 709 states and 1005 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 02:42:03,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:03,928 INFO L93 Difference]: Finished difference Result 1260 states and 1727 transitions. [2022-11-23 02:42:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:42:03,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-11-23 02:42:03,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:03,936 INFO L225 Difference]: With dead ends: 1260 [2022-11-23 02:42:03,937 INFO L226 Difference]: Without dead ends: 882 [2022-11-23 02:42:03,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:42:03,940 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 699 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:03,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 685 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 02:42:03,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2022-11-23 02:42:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 827. [2022-11-23 02:42:04,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 735 states have (on average 1.380952380952381) internal successors, (1015), 744 states have internal predecessors, (1015), 58 states have call successors, (58), 29 states have call predecessors, (58), 32 states have return successors, (76), 54 states have call predecessors, (76), 56 states have call successors, (76) [2022-11-23 02:42:04,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1149 transitions. [2022-11-23 02:42:04,029 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1149 transitions. Word has length 67 [2022-11-23 02:42:04,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:04,030 INFO L495 AbstractCegarLoop]: Abstraction has 827 states and 1149 transitions. [2022-11-23 02:42:04,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 02:42:04,031 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1149 transitions. [2022-11-23 02:42:04,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 02:42:04,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:04,033 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:04,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:42:04,034 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:04,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:04,034 INFO L85 PathProgramCache]: Analyzing trace with hash -160972064, now seen corresponding path program 1 times [2022-11-23 02:42:04,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:04,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100466957] [2022-11-23 02:42:04,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:04,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:42:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:04,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 02:42:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:04,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-23 02:42:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:42:04,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:04,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100466957] [2022-11-23 02:42:04,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100466957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:42:04,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373677231] [2022-11-23 02:42:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:04,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:42:04,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:42:04,255 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:42:04,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:42:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:04,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 02:42:04,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:42:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:04,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:42:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 02:42:04,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373677231] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 02:42:04,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:42:04,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-11-23 02:42:04,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139652546] [2022-11-23 02:42:04,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:04,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:42:04,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:04,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:42:04,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:42:04,725 INFO L87 Difference]: Start difference. First operand 827 states and 1149 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 02:42:04,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:05,000 INFO L93 Difference]: Finished difference Result 882 states and 1216 transitions. [2022-11-23 02:42:05,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:42:05,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-11-23 02:42:05,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:05,008 INFO L225 Difference]: With dead ends: 882 [2022-11-23 02:42:05,008 INFO L226 Difference]: Without dead ends: 879 [2022-11-23 02:42:05,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:42:05,012 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 945 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:05,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 615 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:42:05,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-11-23 02:42:05,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 826. [2022-11-23 02:42:05,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 735 states have (on average 1.3782312925170068) internal successors, (1013), 743 states have internal predecessors, (1013), 57 states have call successors, (57), 29 states have call predecessors, (57), 32 states have return successors, (76), 54 states have call predecessors, (76), 56 states have call successors, (76) [2022-11-23 02:42:05,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1146 transitions. [2022-11-23 02:42:05,110 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1146 transitions. Word has length 68 [2022-11-23 02:42:05,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:05,111 INFO L495 AbstractCegarLoop]: Abstraction has 826 states and 1146 transitions. [2022-11-23 02:42:05,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 02:42:05,111 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1146 transitions. [2022-11-23 02:42:05,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 02:42:05,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:05,114 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:05,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 02:42:05,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:42:05,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:05,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:05,322 INFO L85 PathProgramCache]: Analyzing trace with hash -696266350, now seen corresponding path program 1 times [2022-11-23 02:42:05,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:05,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072889420] [2022-11-23 02:42:05,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:05,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:05,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:42:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:05,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 02:42:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:05,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-23 02:42:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:42:05,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:05,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072889420] [2022-11-23 02:42:05,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072889420] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:42:05,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965114966] [2022-11-23 02:42:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:05,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:42:05,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:42:05,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:42:05,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:42:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:05,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 02:42:05,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:42:06,060 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:06,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:42:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 02:42:06,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965114966] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:42:06,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:42:06,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-11-23 02:42:06,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734786198] [2022-11-23 02:42:06,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:42:06,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:42:06,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:06,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:42:06,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:42:06,185 INFO L87 Difference]: Start difference. First operand 826 states and 1146 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-23 02:42:08,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:08,338 INFO L93 Difference]: Finished difference Result 2355 states and 3143 transitions. [2022-11-23 02:42:08,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-23 02:42:08,339 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-11-23 02:42:08,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:08,349 INFO L225 Difference]: With dead ends: 2355 [2022-11-23 02:42:08,349 INFO L226 Difference]: Without dead ends: 1911 [2022-11-23 02:42:08,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-11-23 02:42:08,353 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1066 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:08,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 3008 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1751 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 02:42:08,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2022-11-23 02:42:08,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1200. [2022-11-23 02:42:08,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 1073 states have (on average 1.3383038210624418) internal successors, (1436), 1087 states have internal predecessors, (1436), 76 states have call successors, (76), 42 states have call predecessors, (76), 49 states have return successors, (107), 71 states have call predecessors, (107), 75 states have call successors, (107) [2022-11-23 02:42:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1619 transitions. [2022-11-23 02:42:08,478 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1619 transitions. Word has length 69 [2022-11-23 02:42:08,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:08,478 INFO L495 AbstractCegarLoop]: Abstraction has 1200 states and 1619 transitions. [2022-11-23 02:42:08,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-23 02:42:08,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1619 transitions. [2022-11-23 02:42:08,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 02:42:08,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:08,483 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:08,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:42:08,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:42:08,690 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:08,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:08,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1233481266, now seen corresponding path program 1 times [2022-11-23 02:42:08,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:08,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969933068] [2022-11-23 02:42:08,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:08,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:08,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:42:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:08,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 02:42:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:08,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-23 02:42:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:08,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:42:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-23 02:42:08,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:08,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969933068] [2022-11-23 02:42:08,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969933068] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:42:08,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557823042] [2022-11-23 02:42:08,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:08,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:42:08,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:42:08,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:42:08,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:42:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:09,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:42:09,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:42:09,096 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 02:42:09,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:42:09,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557823042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:09,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:42:09,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-23 02:42:09,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272633220] [2022-11-23 02:42:09,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:09,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:42:09,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:09,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:42:09,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:42:09,100 INFO L87 Difference]: Start difference. First operand 1200 states and 1619 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 02:42:09,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:09,205 INFO L93 Difference]: Finished difference Result 1844 states and 2457 transitions. [2022-11-23 02:42:09,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:42:09,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-11-23 02:42:09,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:09,212 INFO L225 Difference]: With dead ends: 1844 [2022-11-23 02:42:09,212 INFO L226 Difference]: Without dead ends: 1096 [2022-11-23 02:42:09,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:42:09,217 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 484 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:09,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 628 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:42:09,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-11-23 02:42:09,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1084. [2022-11-23 02:42:09,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 970 states have (on average 1.3391752577319587) internal successors, (1299), 984 states have internal predecessors, (1299), 69 states have call successors, (69), 37 states have call predecessors, (69), 43 states have return successors, (96), 63 states have call predecessors, (96), 68 states have call successors, (96) [2022-11-23 02:42:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1464 transitions. [2022-11-23 02:42:09,316 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1464 transitions. Word has length 88 [2022-11-23 02:42:09,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:09,317 INFO L495 AbstractCegarLoop]: Abstraction has 1084 states and 1464 transitions. [2022-11-23 02:42:09,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 02:42:09,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1464 transitions. [2022-11-23 02:42:09,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-23 02:42:09,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:09,322 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:09,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:42:09,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 02:42:09,528 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:09,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:09,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1258930737, now seen corresponding path program 1 times [2022-11-23 02:42:09,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:09,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736167390] [2022-11-23 02:42:09,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:09,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:09,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 02:42:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:09,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 02:42:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:09,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 02:42:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-23 02:42:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:09,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-23 02:42:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-23 02:42:09,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:09,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736167390] [2022-11-23 02:42:09,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736167390] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:42:09,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113387002] [2022-11-23 02:42:09,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:09,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:42:09,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:42:09,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:42:09,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:42:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:09,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 02:42:09,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:42:09,846 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 02:42:09,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:42:09,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113387002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:09,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:42:09,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-23 02:42:09,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11945996] [2022-11-23 02:42:09,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:09,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:42:09,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:09,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:42:09,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:42:09,849 INFO L87 Difference]: Start difference. First operand 1084 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-23 02:42:09,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:09,926 INFO L93 Difference]: Finished difference Result 1396 states and 1852 transitions. [2022-11-23 02:42:09,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:42:09,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-11-23 02:42:09,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:09,929 INFO L225 Difference]: With dead ends: 1396 [2022-11-23 02:42:09,929 INFO L226 Difference]: Without dead ends: 278 [2022-11-23 02:42:09,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:42:09,932 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 61 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:09,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1065 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:42:09,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-23 02:42:09,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-11-23 02:42:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 249 states have (on average 1.5582329317269077) internal successors, (388), 250 states have internal predecessors, (388), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-23 02:42:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 432 transitions. [2022-11-23 02:42:09,952 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 432 transitions. Word has length 103 [2022-11-23 02:42:09,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:09,952 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 432 transitions. [2022-11-23 02:42:09,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-23 02:42:09,952 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 432 transitions. [2022-11-23 02:42:09,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 02:42:09,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:09,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:09,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:42:10,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2963523a-cbec-4b62-a43c-e4fcf01c1525/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 02:42:10,160 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:10,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:10,161 INFO L85 PathProgramCache]: Analyzing trace with hash 167686775, now seen corresponding path program 1 times [2022-11-23 02:42:10,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:10,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100760925] [2022-11-23 02:42:10,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:10,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:10,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:42:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:10,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:42:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:10,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:42:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:42:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:10,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 02:42:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:10,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:10,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100760925] [2022-11-23 02:42:10,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100760925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:10,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:10,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:42:10,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752448423] [2022-11-23 02:42:10,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:10,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:42:10,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:10,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:42:10,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:42:10,314 INFO L87 Difference]: Start difference. First operand 278 states and 432 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:11,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:11,747 INFO L93 Difference]: Finished difference Result 645 states and 1020 transitions. [2022-11-23 02:42:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:42:11,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 02:42:11,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:11,751 INFO L225 Difference]: With dead ends: 645 [2022-11-23 02:42:11,751 INFO L226 Difference]: Without dead ends: 376 [2022-11-23 02:42:11,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:42:11,753 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 732 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:11,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 544 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 02:42:11,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-23 02:42:11,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 278. [2022-11-23 02:42:11,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 249 states have (on average 1.5542168674698795) internal successors, (387), 250 states have internal predecessors, (387), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-23 02:42:11,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 431 transitions. [2022-11-23 02:42:11,791 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 431 transitions. Word has length 134 [2022-11-23 02:42:11,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:11,792 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 431 transitions. [2022-11-23 02:42:11,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:11,793 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 431 transitions. [2022-11-23 02:42:11,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 02:42:11,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:11,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:11,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 02:42:11,795 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:11,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:11,796 INFO L85 PathProgramCache]: Analyzing trace with hash -779351111, now seen corresponding path program 1 times [2022-11-23 02:42:11,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:11,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385695211] [2022-11-23 02:42:11,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:11,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:11,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:42:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:11,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:42:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:11,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:42:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:12,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:42:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:12,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 02:42:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:12,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:12,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385695211] [2022-11-23 02:42:12,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385695211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:12,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:12,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:42:12,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451224337] [2022-11-23 02:42:12,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:12,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:42:12,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:12,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:42:12,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:42:12,032 INFO L87 Difference]: Start difference. First operand 278 states and 431 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:15,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:15,106 INFO L93 Difference]: Finished difference Result 1006 states and 1598 transitions. [2022-11-23 02:42:15,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 02:42:15,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 02:42:15,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:15,111 INFO L225 Difference]: With dead ends: 1006 [2022-11-23 02:42:15,111 INFO L226 Difference]: Without dead ends: 745 [2022-11-23 02:42:15,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:42:15,113 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 1101 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:15,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 956 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-23 02:42:15,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-11-23 02:42:15,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 550. [2022-11-23 02:42:15,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 497 states have (on average 1.567404426559356) internal successors, (779), 499 states have internal predecessors, (779), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-11-23 02:42:15,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 860 transitions. [2022-11-23 02:42:15,191 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 860 transitions. Word has length 134 [2022-11-23 02:42:15,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:15,191 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 860 transitions. [2022-11-23 02:42:15,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:15,192 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 860 transitions. [2022-11-23 02:42:15,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 02:42:15,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:15,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:15,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 02:42:15,195 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:15,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:15,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1809112637, now seen corresponding path program 1 times [2022-11-23 02:42:15,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:15,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545864060] [2022-11-23 02:42:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:15,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:15,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:42:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:15,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:42:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:15,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:42:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:42:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:15,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 02:42:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:15,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:15,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545864060] [2022-11-23 02:42:15,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545864060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:15,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:15,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:42:15,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905777801] [2022-11-23 02:42:15,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:15,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:42:15,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:15,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:42:15,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:42:15,595 INFO L87 Difference]: Start difference. First operand 550 states and 860 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:19,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:19,291 INFO L93 Difference]: Finished difference Result 1659 states and 2636 transitions. [2022-11-23 02:42:19,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 02:42:19,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 02:42:19,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:19,297 INFO L225 Difference]: With dead ends: 1659 [2022-11-23 02:42:19,297 INFO L226 Difference]: Without dead ends: 1126 [2022-11-23 02:42:19,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:42:19,300 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 1128 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:19,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 1772 Invalid, 2586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-23 02:42:19,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-11-23 02:42:19,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 803. [2022-11-23 02:42:19,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 726 states have (on average 1.5606060606060606) internal successors, (1133), 729 states have internal predecessors, (1133), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-11-23 02:42:19,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1250 transitions. [2022-11-23 02:42:19,416 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1250 transitions. Word has length 134 [2022-11-23 02:42:19,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:19,417 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1250 transitions. [2022-11-23 02:42:19,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:19,417 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1250 transitions. [2022-11-23 02:42:19,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 02:42:19,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:19,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:19,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 02:42:19,420 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:19,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:19,421 INFO L85 PathProgramCache]: Analyzing trace with hash -483968389, now seen corresponding path program 1 times [2022-11-23 02:42:19,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:19,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631875970] [2022-11-23 02:42:19,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:19,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:42:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:19,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:42:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:42:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:19,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:42:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:19,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 02:42:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:19,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:19,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:19,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631875970] [2022-11-23 02:42:19,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631875970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:19,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:19,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:42:19,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029457214] [2022-11-23 02:42:19,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:19,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:42:19,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:19,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:42:19,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:42:19,697 INFO L87 Difference]: Start difference. First operand 803 states and 1250 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:23,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:23,541 INFO L93 Difference]: Finished difference Result 2620 states and 4154 transitions. [2022-11-23 02:42:23,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 02:42:23,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 02:42:23,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:23,550 INFO L225 Difference]: With dead ends: 2620 [2022-11-23 02:42:23,551 INFO L226 Difference]: Without dead ends: 1834 [2022-11-23 02:42:23,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:42:23,554 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1122 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:23,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 1770 Invalid, 2567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2510 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-23 02:42:23,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2022-11-23 02:42:23,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1313. [2022-11-23 02:42:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1188 states have (on average 1.5555555555555556) internal successors, (1848), 1193 states have internal predecessors, (1848), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-11-23 02:42:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 2041 transitions. [2022-11-23 02:42:23,752 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 2041 transitions. Word has length 134 [2022-11-23 02:42:23,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:23,752 INFO L495 AbstractCegarLoop]: Abstraction has 1313 states and 2041 transitions. [2022-11-23 02:42:23,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:23,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 2041 transitions. [2022-11-23 02:42:23,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 02:42:23,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:23,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:23,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 02:42:23,756 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:23,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:23,757 INFO L85 PathProgramCache]: Analyzing trace with hash -12612039, now seen corresponding path program 1 times [2022-11-23 02:42:23,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:23,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921020413] [2022-11-23 02:42:23,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:23,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:23,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:42:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:23,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:42:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:42:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:42:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 02:42:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:24,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:24,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:24,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921020413] [2022-11-23 02:42:24,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921020413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:24,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:24,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:42:24,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601482029] [2022-11-23 02:42:24,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:24,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:42:24,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:24,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:42:24,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:42:24,034 INFO L87 Difference]: Start difference. First operand 1313 states and 2041 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:27,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:27,911 INFO L93 Difference]: Finished difference Result 4476 states and 7069 transitions. [2022-11-23 02:42:27,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 02:42:27,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 02:42:27,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:27,931 INFO L225 Difference]: With dead ends: 4476 [2022-11-23 02:42:27,931 INFO L226 Difference]: Without dead ends: 3180 [2022-11-23 02:42:27,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:42:27,937 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1121 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:27,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 1770 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2497 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 02:42:27,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2022-11-23 02:42:28,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 2334. [2022-11-23 02:42:28,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2113 states have (on average 1.551348793185045) internal successors, (3278), 2122 states have internal predecessors, (3278), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-11-23 02:42:28,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3629 transitions. [2022-11-23 02:42:28,302 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3629 transitions. Word has length 134 [2022-11-23 02:42:28,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:28,302 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3629 transitions. [2022-11-23 02:42:28,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:28,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3629 transitions. [2022-11-23 02:42:28,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 02:42:28,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:28,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:28,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 02:42:28,307 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:28,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:28,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1659974981, now seen corresponding path program 1 times [2022-11-23 02:42:28,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:28,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831412364] [2022-11-23 02:42:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:28,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:28,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:42:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:28,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:42:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:28,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:42:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:28,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:42:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:28,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 02:42:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:28,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:28,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831412364] [2022-11-23 02:42:28,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831412364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:28,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:28,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:42:28,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857133330] [2022-11-23 02:42:28,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:28,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:42:28,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:28,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:42:28,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:42:28,531 INFO L87 Difference]: Start difference. First operand 2334 states and 3629 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:30,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:30,666 INFO L93 Difference]: Finished difference Result 5512 states and 8710 transitions. [2022-11-23 02:42:30,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:42:30,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 02:42:30,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:30,682 INFO L225 Difference]: With dead ends: 5512 [2022-11-23 02:42:30,682 INFO L226 Difference]: Without dead ends: 3195 [2022-11-23 02:42:30,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:42:30,690 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 862 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:30,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 897 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 02:42:30,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2022-11-23 02:42:31,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 2334. [2022-11-23 02:42:31,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2113 states have (on average 1.547089446284903) internal successors, (3269), 2122 states have internal predecessors, (3269), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-11-23 02:42:31,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3620 transitions. [2022-11-23 02:42:31,110 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3620 transitions. Word has length 134 [2022-11-23 02:42:31,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:31,111 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3620 transitions. [2022-11-23 02:42:31,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3620 transitions. [2022-11-23 02:42:31,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 02:42:31,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:31,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:31,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 02:42:31,115 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:31,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:31,116 INFO L85 PathProgramCache]: Analyzing trace with hash 503641593, now seen corresponding path program 1 times [2022-11-23 02:42:31,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:31,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028087284] [2022-11-23 02:42:31,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:31,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:31,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:42:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:31,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:42:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:31,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:42:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:31,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:42:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:31,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 02:42:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:31,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:31,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028087284] [2022-11-23 02:42:31,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028087284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:31,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:31,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:42:31,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528505598] [2022-11-23 02:42:31,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:31,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:42:31,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:31,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:42:31,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:42:31,355 INFO L87 Difference]: Start difference. First operand 2334 states and 3620 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:33,646 INFO L93 Difference]: Finished difference Result 5502 states and 8663 transitions. [2022-11-23 02:42:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:42:33,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 02:42:33,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:33,666 INFO L225 Difference]: With dead ends: 5502 [2022-11-23 02:42:33,667 INFO L226 Difference]: Without dead ends: 3185 [2022-11-23 02:42:33,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:42:33,676 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 810 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:33,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 898 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 02:42:33,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3185 states. [2022-11-23 02:42:34,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3185 to 2334. [2022-11-23 02:42:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2113 states have (on average 1.542830099384761) internal successors, (3260), 2122 states have internal predecessors, (3260), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-11-23 02:42:34,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3611 transitions. [2022-11-23 02:42:34,142 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3611 transitions. Word has length 134 [2022-11-23 02:42:34,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:34,142 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3611 transitions. [2022-11-23 02:42:34,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:34,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3611 transitions. [2022-11-23 02:42:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 02:42:34,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:34,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:34,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 02:42:34,147 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:34,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:34,148 INFO L85 PathProgramCache]: Analyzing trace with hash -534942981, now seen corresponding path program 1 times [2022-11-23 02:42:34,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:34,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466962825] [2022-11-23 02:42:34,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:34,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:42:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:42:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:42:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:42:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 02:42:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:34,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:34,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466962825] [2022-11-23 02:42:34,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466962825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:34,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:34,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:42:34,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748765440] [2022-11-23 02:42:34,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:34,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:42:34,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:34,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:42:34,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:42:34,386 INFO L87 Difference]: Start difference. First operand 2334 states and 3611 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:36,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:36,448 INFO L93 Difference]: Finished difference Result 5492 states and 8616 transitions. [2022-11-23 02:42:36,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:42:36,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 02:42:36,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:36,476 INFO L225 Difference]: With dead ends: 5492 [2022-11-23 02:42:36,476 INFO L226 Difference]: Without dead ends: 3175 [2022-11-23 02:42:36,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:42:36,484 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 926 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:36,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 755 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 02:42:36,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2022-11-23 02:42:36,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 2334. [2022-11-23 02:42:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2113 states have (on average 1.538570752484619) internal successors, (3251), 2122 states have internal predecessors, (3251), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-11-23 02:42:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3602 transitions. [2022-11-23 02:42:36,926 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3602 transitions. Word has length 134 [2022-11-23 02:42:36,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:36,926 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3602 transitions. [2022-11-23 02:42:36,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:36,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3602 transitions. [2022-11-23 02:42:36,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 02:42:36,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:36,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:36,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 02:42:36,931 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:36,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:36,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1786858937, now seen corresponding path program 1 times [2022-11-23 02:42:36,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:36,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703158802] [2022-11-23 02:42:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:36,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:37,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:42:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:37,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:42:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:37,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:42:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:37,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:42:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:37,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 02:42:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:37,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:37,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703158802] [2022-11-23 02:42:37,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703158802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:37,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:37,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:42:37,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930379893] [2022-11-23 02:42:37,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:37,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:42:37,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:37,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:42:37,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:42:37,223 INFO L87 Difference]: Start difference. First operand 2334 states and 3602 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:41,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:41,597 INFO L93 Difference]: Finished difference Result 8157 states and 12723 transitions. [2022-11-23 02:42:41,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 02:42:41,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 02:42:41,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:41,628 INFO L225 Difference]: With dead ends: 8157 [2022-11-23 02:42:41,629 INFO L226 Difference]: Without dead ends: 5840 [2022-11-23 02:42:41,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:42:41,639 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1099 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:41,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 1770 Invalid, 2466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 02:42:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5840 states. [2022-11-23 02:42:42,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5840 to 4410. [2022-11-23 02:42:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4410 states, 3997 states have (on average 1.532899674756067) internal successors, (6127), 4014 states have internal predecessors, (6127), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-11-23 02:42:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4410 states to 4410 states and 6812 transitions. [2022-11-23 02:42:42,333 INFO L78 Accepts]: Start accepts. Automaton has 4410 states and 6812 transitions. Word has length 134 [2022-11-23 02:42:42,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:42,334 INFO L495 AbstractCegarLoop]: Abstraction has 4410 states and 6812 transitions. [2022-11-23 02:42:42,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:42,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4410 states and 6812 transitions. [2022-11-23 02:42:42,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 02:42:42,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:42,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:42,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 02:42:42,340 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:42,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:42,341 INFO L85 PathProgramCache]: Analyzing trace with hash -355001541, now seen corresponding path program 1 times [2022-11-23 02:42:42,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:42,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508766944] [2022-11-23 02:42:42,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:42,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:42,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:42:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:42,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:42:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:42,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:42:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:42,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:42:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:42,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 02:42:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:42,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:42,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508766944] [2022-11-23 02:42:42,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508766944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:42,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:42,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:42:42,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859020848] [2022-11-23 02:42:42,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:42,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:42:42,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:42,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:42:42,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:42:42,578 INFO L87 Difference]: Start difference. First operand 4410 states and 6812 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:48,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:48,864 INFO L93 Difference]: Finished difference Result 17519 states and 27285 transitions. [2022-11-23 02:42:48,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 02:42:48,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 02:42:48,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:48,929 INFO L225 Difference]: With dead ends: 17519 [2022-11-23 02:42:48,929 INFO L226 Difference]: Without dead ends: 13126 [2022-11-23 02:42:48,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:42:48,949 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1434 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 2446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:48,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 1760 Invalid, 2446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-23 02:42:48,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13126 states. [2022-11-23 02:42:50,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13126 to 8523. [2022-11-23 02:42:50,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8523 states, 7742 states have (on average 1.5315164040299665) internal successors, (11857), 7775 states have internal predecessors, (11857), 550 states have call successors, (550), 198 states have call predecessors, (550), 230 states have return successors, (825), 581 states have call predecessors, (825), 550 states have call successors, (825) [2022-11-23 02:42:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8523 states to 8523 states and 13232 transitions. [2022-11-23 02:42:50,626 INFO L78 Accepts]: Start accepts. Automaton has 8523 states and 13232 transitions. Word has length 134 [2022-11-23 02:42:50,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:42:50,626 INFO L495 AbstractCegarLoop]: Abstraction has 8523 states and 13232 transitions. [2022-11-23 02:42:50,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:50,627 INFO L276 IsEmpty]: Start isEmpty. Operand 8523 states and 13232 transitions. [2022-11-23 02:42:50,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 02:42:50,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:42:50,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:50,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 02:42:50,635 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:42:50,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:50,635 INFO L85 PathProgramCache]: Analyzing trace with hash -978283143, now seen corresponding path program 1 times [2022-11-23 02:42:50,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:50,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774765581] [2022-11-23 02:42:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:50,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:50,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:42:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:50,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:42:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:50,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:42:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:50,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:42:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:50,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 02:42:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:50,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:50,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:50,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774765581] [2022-11-23 02:42:50,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774765581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:50,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:50,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:42:50,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572573911] [2022-11-23 02:42:50,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:50,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:42:50,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:50,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:42:50,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:42:50,855 INFO L87 Difference]: Start difference. First operand 8523 states and 13232 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:42:59,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:42:59,347 INFO L93 Difference]: Finished difference Result 33324 states and 52167 transitions. [2022-11-23 02:42:59,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 02:42:59,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 02:42:59,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:42:59,461 INFO L225 Difference]: With dead ends: 33324 [2022-11-23 02:42:59,461 INFO L226 Difference]: Without dead ends: 24818 [2022-11-23 02:42:59,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:42:59,499 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1162 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2799 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:42:59,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 1760 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2799 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-23 02:42:59,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24818 states. [2022-11-23 02:43:02,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24818 to 16765. [2022-11-23 02:43:02,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16765 states, 15264 states have (on average 1.532822327044025) internal successors, (23397), 15329 states have internal predecessors, (23397), 1046 states have call successors, (1046), 390 states have call predecessors, (1046), 454 states have return successors, (1839), 1109 states have call predecessors, (1839), 1046 states have call successors, (1839) [2022-11-23 02:43:03,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16765 states to 16765 states and 26282 transitions. [2022-11-23 02:43:03,036 INFO L78 Accepts]: Start accepts. Automaton has 16765 states and 26282 transitions. Word has length 134 [2022-11-23 02:43:03,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:43:03,037 INFO L495 AbstractCegarLoop]: Abstraction has 16765 states and 26282 transitions. [2022-11-23 02:43:03,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:43:03,037 INFO L276 IsEmpty]: Start isEmpty. Operand 16765 states and 26282 transitions. [2022-11-23 02:43:03,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 02:43:03,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:43:03,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:43:03,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-23 02:43:03,051 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:43:03,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:43:03,052 INFO L85 PathProgramCache]: Analyzing trace with hash 411010871, now seen corresponding path program 1 times [2022-11-23 02:43:03,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:43:03,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517745516] [2022-11-23 02:43:03,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:03,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:43:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:03,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:43:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:03,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:43:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:03,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:43:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:03,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:43:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:03,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 02:43:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:03,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:43:03,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:43:03,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517745516] [2022-11-23 02:43:03,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517745516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:43:03,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:43:03,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:43:03,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622225046] [2022-11-23 02:43:03,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:43:03,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:43:03,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:43:03,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:43:03,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:43:03,292 INFO L87 Difference]: Start difference. First operand 16765 states and 26282 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:43:17,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:43:17,587 INFO L93 Difference]: Finished difference Result 64764 states and 102287 transitions. [2022-11-23 02:43:17,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 02:43:17,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-11-23 02:43:17,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:43:17,809 INFO L225 Difference]: With dead ends: 64764 [2022-11-23 02:43:17,809 INFO L226 Difference]: Without dead ends: 48016 [2022-11-23 02:43:17,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:43:17,872 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1311 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:43:17,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 1760 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-23 02:43:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48016 states. [2022-11-23 02:43:24,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48016 to 33214. [2022-11-23 02:43:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33214 states, 30305 states have (on average 1.5344992575482594) internal successors, (46503), 30434 states have internal predecessors, (46503), 2006 states have call successors, (2006), 774 states have call predecessors, (2006), 902 states have return successors, (4321), 2133 states have call predecessors, (4321), 2006 states have call successors, (4321) [2022-11-23 02:43:24,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33214 states to 33214 states and 52830 transitions. [2022-11-23 02:43:24,419 INFO L78 Accepts]: Start accepts. Automaton has 33214 states and 52830 transitions. Word has length 134 [2022-11-23 02:43:24,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:43:24,419 INFO L495 AbstractCegarLoop]: Abstraction has 33214 states and 52830 transitions. [2022-11-23 02:43:24,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 02:43:24,420 INFO L276 IsEmpty]: Start isEmpty. Operand 33214 states and 52830 transitions. [2022-11-23 02:43:24,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 02:43:24,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:43:24,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:43:24,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-23 02:43:24,441 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:43:24,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:43:24,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1622383175, now seen corresponding path program 1 times [2022-11-23 02:43:24,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:43:24,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384969406] [2022-11-23 02:43:24,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:24,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:43:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:24,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 02:43:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:24,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:43:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:24,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:43:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:24,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:43:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:24,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 02:43:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:24,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:43:24,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:43:24,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384969406] [2022-11-23 02:43:24,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384969406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:43:24,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:43:24,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:43:24,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805276450] [2022-11-23 02:43:24,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:43:24,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:43:24,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:43:24,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:43:24,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:43:24,648 INFO L87 Difference]: Start difference. First operand 33214 states and 52830 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)