./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe6bee847a7b573239a2f60b60a87297f25c539812daa07adcb7591b7977879b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 20:43:27,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:43:27,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:43:27,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:43:27,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:43:27,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:43:27,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:43:27,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:43:27,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:43:27,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:43:27,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:43:27,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:43:27,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:43:27,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:43:27,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:43:27,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:43:27,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:43:27,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:43:27,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:43:27,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:43:27,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:43:27,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:43:27,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:43:27,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:43:27,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:43:27,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:43:27,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:43:27,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:43:27,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:43:27,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:43:27,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:43:27,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:43:27,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:43:27,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:43:27,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:43:27,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:43:27,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:43:27,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:43:27,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:43:27,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:43:27,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:43:27,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:43:27,166 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:43:27,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:43:27,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:43:27,167 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:43:27,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:43:27,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:43:27,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:43:27,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:43:27,168 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:43:27,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:43:27,168 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:43:27,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:43:27,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:43:27,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:43:27,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:43:27,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:43:27,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:43:27,169 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:43:27,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:43:27,169 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:43:27,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:43:27,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:43:27,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:43:27,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:43:27,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:43:27,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:43:27,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:43:27,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:43:27,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:43:27,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:43:27,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:43:27,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:43:27,171 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:43:27,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:43:27,171 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:43:27,171 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_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe6bee847a7b573239a2f60b60a87297f25c539812daa07adcb7591b7977879b [2022-12-13 20:43:27,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:43:27,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:43:27,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:43:27,378 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:43:27,378 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:43:27,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c [2022-12-13 20:43:29,947 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:43:30,135 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:43:30,136 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c [2022-12-13 20:43:30,147 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/data/b5c5ad0e2/e9fbf2970e7d4748b7589009819d6b6c/FLAG3220531ba [2022-12-13 20:43:30,533 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/data/b5c5ad0e2/e9fbf2970e7d4748b7589009819d6b6c [2022-12-13 20:43:30,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:43:30,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:43:30,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:43:30,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:43:30,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:43:30,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:43:30" (1/1) ... [2022-12-13 20:43:30,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211a1337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:43:30, skipping insertion in model container [2022-12-13 20:43:30,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:43:30" (1/1) ... [2022-12-13 20:43:30,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:43:30,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:43:30,698 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_c6f94d56-35af-409c-82a6-4420225dc256/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c[913,926] [2022-12-13 20:43:30,732 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_c6f94d56-35af-409c-82a6-4420225dc256/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c[5977,5990] [2022-12-13 20:43:30,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:43:30,807 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:43:30,816 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_c6f94d56-35af-409c-82a6-4420225dc256/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c[913,926] [2022-12-13 20:43:30,826 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_c6f94d56-35af-409c-82a6-4420225dc256/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c[5977,5990] [2022-12-13 20:43:30,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:43:30,883 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:43:30,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:43:30 WrapperNode [2022-12-13 20:43:30,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:43:30,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:43:30,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:43:30,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:43:30,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:43:30" (1/1) ... [2022-12-13 20:43:30,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:43:30" (1/1) ... [2022-12-13 20:43:30,932 INFO L138 Inliner]: procedures = 68, calls = 79, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 944 [2022-12-13 20:43:30,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:43:30,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:43:30,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:43:30,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:43:30,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:43:30" (1/1) ... [2022-12-13 20:43:30,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:43:30" (1/1) ... [2022-12-13 20:43:30,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:43:30" (1/1) ... [2022-12-13 20:43:30,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:43:30" (1/1) ... [2022-12-13 20:43:30,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:43:30" (1/1) ... [2022-12-13 20:43:30,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:43:30" (1/1) ... [2022-12-13 20:43:30,975 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:43:30" (1/1) ... [2022-12-13 20:43:30,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:43:30" (1/1) ... [2022-12-13 20:43:30,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:43:30,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:43:30,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:43:30,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:43:30,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:43:30" (1/1) ... [2022-12-13 20:43:30,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:43:30,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:43:31,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:43:31,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:43:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:43:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 20:43:31,035 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 20:43:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-12-13 20:43:31,035 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-12-13 20:43:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-12-13 20:43:31,036 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-12-13 20:43:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-12-13 20:43:31,036 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-12-13 20:43:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-12-13 20:43:31,036 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-12-13 20:43:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-12-13 20:43:31,036 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-12-13 20:43:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-12-13 20:43:31,036 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-12-13 20:43:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:43:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-12-13 20:43:31,036 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-12-13 20:43:31,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:43:31,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:43:31,037 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-12-13 20:43:31,037 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-12-13 20:43:31,037 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-12-13 20:43:31,037 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-12-13 20:43:31,139 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:43:31,140 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:43:31,695 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:43:31,705 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:43:31,705 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-12-13 20:43:31,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:43:31 BoogieIcfgContainer [2022-12-13 20:43:31,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:43:31,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:43:31,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:43:31,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:43:31,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:43:30" (1/3) ... [2022-12-13 20:43:31,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576da5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:43:31, skipping insertion in model container [2022-12-13 20:43:31,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:43:30" (2/3) ... [2022-12-13 20:43:31,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576da5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:43:31, skipping insertion in model container [2022-12-13 20:43:31,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:43:31" (3/3) ... [2022-12-13 20:43:31,713 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.10.cil-1.c [2022-12-13 20:43:31,727 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:43:31,727 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 20:43:31,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:43:31,775 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;@4b4bbe8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:43:31,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 20:43:31,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 412 states, 367 states have (on average 1.6457765667574933) internal successors, (604), 374 states have internal predecessors, (604), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2022-12-13 20:43:31,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 20:43:31,788 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:31,789 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] [2022-12-13 20:43:31,789 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:31,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:31,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1419459075, now seen corresponding path program 1 times [2022-12-13 20:43:31,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:31,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014624009] [2022-12-13 20:43:31,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:31,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:31,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 20:43:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:31,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 20:43:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:31,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:31,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014624009] [2022-12-13 20:43:31,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014624009] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:31,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:43:31,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:43:31,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695364945] [2022-12-13 20:43:31,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:31,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:43:31,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:32,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:43:32,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:43:32,029 INFO L87 Difference]: Start difference. First operand has 412 states, 367 states have (on average 1.6457765667574933) internal successors, (604), 374 states have internal predecessors, (604), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) 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) [2022-12-13 20:43:32,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:32,537 INFO L93 Difference]: Finished difference Result 809 states and 1309 transitions. [2022-12-13 20:43:32,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:43:32,540 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 [2022-12-13 20:43:32,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:32,553 INFO L225 Difference]: With dead ends: 809 [2022-12-13 20:43:32,553 INFO L226 Difference]: Without dead ends: 410 [2022-12-13 20:43:32,558 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 [2022-12-13 20:43:32,561 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 349 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:32,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 981 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 20:43:32,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-12-13 20:43:32,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 401. [2022-12-13 20:43:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 359 states have (on average 1.551532033426184) internal successors, (557), 363 states have internal predecessors, (557), 32 states have call successors, (32), 10 states have call predecessors, (32), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-12-13 20:43:32,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 617 transitions. [2022-12-13 20:43:32,629 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 617 transitions. Word has length 44 [2022-12-13 20:43:32,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:32,630 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 617 transitions. [2022-12-13 20:43:32,630 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) [2022-12-13 20:43:32,630 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 617 transitions. [2022-12-13 20:43:32,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 20:43:32,633 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:32,633 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] [2022-12-13 20:43:32,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:43:32,633 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:32,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:32,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1503700923, now seen corresponding path program 1 times [2022-12-13 20:43:32,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:32,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740828201] [2022-12-13 20:43:32,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:32,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:32,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 20:43:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:32,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 20:43:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:32,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:32,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740828201] [2022-12-13 20:43:32,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740828201] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:32,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:43:32,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:43:32,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403886786] [2022-12-13 20:43:32,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:32,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:43:32,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:32,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:43:32,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:43:32,740 INFO L87 Difference]: Start difference. First operand 401 states and 617 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) [2022-12-13 20:43:33,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:33,083 INFO L93 Difference]: Finished difference Result 531 states and 800 transitions. [2022-12-13 20:43:33,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:43:33,084 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 [2022-12-13 20:43:33,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:33,086 INFO L225 Difference]: With dead ends: 531 [2022-12-13 20:43:33,086 INFO L226 Difference]: Without dead ends: 469 [2022-12-13 20:43:33,086 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 [2022-12-13 20:43:33,087 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 829 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:33,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 765 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:43:33,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-12-13 20:43:33,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 463. [2022-12-13 20:43:33,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 414 states have (on average 1.5241545893719808) internal successors, (631), 419 states have internal predecessors, (631), 36 states have call successors, (36), 12 states have call predecessors, (36), 11 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2022-12-13 20:43:33,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 705 transitions. [2022-12-13 20:43:33,109 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 705 transitions. Word has length 44 [2022-12-13 20:43:33,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:33,109 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 705 transitions. [2022-12-13 20:43:33,109 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) [2022-12-13 20:43:33,110 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 705 transitions. [2022-12-13 20:43:33,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 20:43:33,111 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:33,111 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] [2022-12-13 20:43:33,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:43:33,111 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:33,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:33,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1980433208, now seen corresponding path program 1 times [2022-12-13 20:43:33,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:33,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689246986] [2022-12-13 20:43:33,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:33,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:33,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 20:43:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:33,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:43:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:33,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:33,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689246986] [2022-12-13 20:43:33,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689246986] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:33,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:43:33,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:43:33,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071436193] [2022-12-13 20:43:33,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:33,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:43:33,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:33,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:43:33,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:43:33,164 INFO L87 Difference]: Start difference. First operand 463 states and 705 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) [2022-12-13 20:43:33,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:33,491 INFO L93 Difference]: Finished difference Result 723 states and 1075 transitions. [2022-12-13 20:43:33,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:43:33,491 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 [2022-12-13 20:43:33,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:33,496 INFO L225 Difference]: With dead ends: 723 [2022-12-13 20:43:33,496 INFO L226 Difference]: Without dead ends: 599 [2022-12-13 20:43:33,497 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 [2022-12-13 20:43:33,497 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 846 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:33,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 772 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:43:33,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-12-13 20:43:33,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 574. [2022-12-13 20:43:33,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 512 states have (on average 1.484375) internal successors, (760), 518 states have internal predecessors, (760), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (52), 40 states have call predecessors, (52), 40 states have call successors, (52) [2022-12-13 20:43:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 856 transitions. [2022-12-13 20:43:33,522 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 856 transitions. Word has length 45 [2022-12-13 20:43:33,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:33,522 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 856 transitions. [2022-12-13 20:43:33,523 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) [2022-12-13 20:43:33,523 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 856 transitions. [2022-12-13 20:43:33,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 20:43:33,524 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:33,524 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] [2022-12-13 20:43:33,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:43:33,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:33,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:33,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1030176627, now seen corresponding path program 1 times [2022-12-13 20:43:33,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:33,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534073428] [2022-12-13 20:43:33,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:33,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:33,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 20:43:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:33,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:43:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:33,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:33,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534073428] [2022-12-13 20:43:33,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534073428] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:33,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:43:33,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:43:33,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162786577] [2022-12-13 20:43:33,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:33,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:43:33,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:33,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:43:33,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:43:33,576 INFO L87 Difference]: Start difference. First operand 574 states and 856 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) [2022-12-13 20:43:33,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:33,991 INFO L93 Difference]: Finished difference Result 1023 states and 1456 transitions. [2022-12-13 20:43:33,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:43:33,992 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 [2022-12-13 20:43:33,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:33,996 INFO L225 Difference]: With dead ends: 1023 [2022-12-13 20:43:33,997 INFO L226 Difference]: Without dead ends: 788 [2022-12-13 20:43:33,998 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 [2022-12-13 20:43:33,999 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 326 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:34,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1086 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:43:34,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-12-13 20:43:34,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 672. [2022-12-13 20:43:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 601 states have (on average 1.4608985024958403) internal successors, (878), 609 states have internal predecessors, (878), 48 states have call successors, (48), 21 states have call predecessors, (48), 21 states have return successors, (54), 42 states have call predecessors, (54), 44 states have call successors, (54) [2022-12-13 20:43:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 980 transitions. [2022-12-13 20:43:34,043 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 980 transitions. Word has length 45 [2022-12-13 20:43:34,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:34,044 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 980 transitions. [2022-12-13 20:43:34,044 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) [2022-12-13 20:43:34,044 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 980 transitions. [2022-12-13 20:43:34,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 20:43:34,046 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:34,046 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] [2022-12-13 20:43:34,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:43:34,046 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:34,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:34,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1097869046, now seen corresponding path program 1 times [2022-12-13 20:43:34,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:34,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022132493] [2022-12-13 20:43:34,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:34,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:34,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 20:43:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:34,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 20:43:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:34,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:43:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:34,138 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:43:34,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:34,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022132493] [2022-12-13 20:43:34,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022132493] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:34,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:43:34,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:43:34,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325883047] [2022-12-13 20:43:34,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:34,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:43:34,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:34,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:43:34,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:43:34,141 INFO L87 Difference]: Start difference. First operand 672 states and 980 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) [2022-12-13 20:43:34,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:34,533 INFO L93 Difference]: Finished difference Result 1211 states and 1699 transitions. [2022-12-13 20:43:34,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:43:34,534 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 [2022-12-13 20:43:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:34,538 INFO L225 Difference]: With dead ends: 1211 [2022-12-13 20:43:34,538 INFO L226 Difference]: Without dead ends: 878 [2022-12-13 20:43:34,539 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 [2022-12-13 20:43:34,540 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 314 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:34,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1136 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:43:34,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-12-13 20:43:34,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 840. [2022-12-13 20:43:34,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 748 states have (on average 1.410427807486631) internal successors, (1055), 758 states have internal predecessors, (1055), 60 states have call successors, (60), 28 states have call predecessors, (60), 30 states have return successors, (74), 54 states have call predecessors, (74), 56 states have call successors, (74) [2022-12-13 20:43:34,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1189 transitions. [2022-12-13 20:43:34,586 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1189 transitions. Word has length 62 [2022-12-13 20:43:34,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:34,586 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1189 transitions. [2022-12-13 20:43:34,586 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) [2022-12-13 20:43:34,586 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1189 transitions. [2022-12-13 20:43:34,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 20:43:34,588 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:34,588 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] [2022-12-13 20:43:34,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:43:34,589 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:34,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:34,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1559344464, now seen corresponding path program 1 times [2022-12-13 20:43:34,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:34,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842872350] [2022-12-13 20:43:34,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:34,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:34,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 20:43:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:34,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 20:43:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:34,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 20:43:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 20:43:34,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:34,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842872350] [2022-12-13 20:43:34,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842872350] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:34,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:43:34,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:43:34,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657945610] [2022-12-13 20:43:34,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:34,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:43:34,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:34,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:43:34,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:43:34,652 INFO L87 Difference]: Start difference. First operand 840 states and 1189 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) [2022-12-13 20:43:34,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:34,972 INFO L93 Difference]: Finished difference Result 1469 states and 2011 transitions. [2022-12-13 20:43:34,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:43:34,972 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 [2022-12-13 20:43:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:34,975 INFO L225 Difference]: With dead ends: 1469 [2022-12-13 20:43:34,975 INFO L226 Difference]: Without dead ends: 1015 [2022-12-13 20:43:34,976 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 [2022-12-13 20:43:34,977 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 825 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:34,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 785 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:43:34,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-12-13 20:43:35,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 960. [2022-12-13 20:43:35,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 855 states have (on average 1.3812865497076023) internal successors, (1181), 867 states have internal predecessors, (1181), 66 states have call successors, (66), 33 states have call predecessors, (66), 37 states have return successors, (84), 60 states have call predecessors, (84), 62 states have call successors, (84) [2022-12-13 20:43:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1331 transitions. [2022-12-13 20:43:35,013 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1331 transitions. Word has length 67 [2022-12-13 20:43:35,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:35,013 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 1331 transitions. [2022-12-13 20:43:35,013 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) [2022-12-13 20:43:35,013 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1331 transitions. [2022-12-13 20:43:35,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 20:43:35,014 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:35,015 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] [2022-12-13 20:43:35,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:43:35,015 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:35,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:35,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1116930715, now seen corresponding path program 1 times [2022-12-13 20:43:35,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:35,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762720801] [2022-12-13 20:43:35,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:35,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:35,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 20:43:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:35,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:43:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:35,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 20:43:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:43:35,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:35,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762720801] [2022-12-13 20:43:35,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762720801] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:43:35,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727854174] [2022-12-13 20:43:35,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:35,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:43:35,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:43:35,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:43:35,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:43:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:35,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:43:35,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:43:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:35,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:43:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 20:43:35,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727854174] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 20:43:35,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:43:35,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-12-13 20:43:35,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670515524] [2022-12-13 20:43:35,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:35,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:43:35,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:35,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:43:35,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:43:35,311 INFO L87 Difference]: Start difference. First operand 960 states and 1331 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) [2022-12-13 20:43:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:35,474 INFO L93 Difference]: Finished difference Result 1016 states and 1399 transitions. [2022-12-13 20:43:35,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:43:35,474 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 [2022-12-13 20:43:35,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:35,479 INFO L225 Difference]: With dead ends: 1016 [2022-12-13 20:43:35,479 INFO L226 Difference]: Without dead ends: 1013 [2022-12-13 20:43:35,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:43:35,481 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 1116 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:35,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 712 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:43:35,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-12-13 20:43:35,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 959. [2022-12-13 20:43:35,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 855 states have (on average 1.3789473684210527) internal successors, (1179), 866 states have internal predecessors, (1179), 65 states have call successors, (65), 33 states have call predecessors, (65), 37 states have return successors, (84), 60 states have call predecessors, (84), 62 states have call successors, (84) [2022-12-13 20:43:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1328 transitions. [2022-12-13 20:43:35,539 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1328 transitions. Word has length 68 [2022-12-13 20:43:35,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:35,539 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1328 transitions. [2022-12-13 20:43:35,539 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) [2022-12-13 20:43:35,539 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1328 transitions. [2022-12-13 20:43:35,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 20:43:35,541 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:35,541 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] [2022-12-13 20:43:35,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:43:35,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 20:43:35,742 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:35,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:35,742 INFO L85 PathProgramCache]: Analyzing trace with hash 263839635, now seen corresponding path program 1 times [2022-12-13 20:43:35,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:35,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462471258] [2022-12-13 20:43:35,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:35,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:35,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 20:43:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:35,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:43:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:35,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 20:43:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:35,834 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:43:35,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:35,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462471258] [2022-12-13 20:43:35,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462471258] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:43:35,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031668598] [2022-12-13 20:43:35,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:35,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:43:35,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:43:35,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:43:35,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:43:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:35,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 20:43:35,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:43:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:36,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:43:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 20:43:36,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031668598] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:43:36,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:43:36,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-12-13 20:43:36,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139531363] [2022-12-13 20:43:36,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:43:36,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 20:43:36,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:36,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 20:43:36,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:43:36,168 INFO L87 Difference]: Start difference. First operand 959 states and 1328 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) [2022-12-13 20:43:37,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:37,368 INFO L93 Difference]: Finished difference Result 2659 states and 3548 transitions. [2022-12-13 20:43:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-13 20:43:37,368 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 [2022-12-13 20:43:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:37,373 INFO L225 Difference]: With dead ends: 2659 [2022-12-13 20:43:37,373 INFO L226 Difference]: Without dead ends: 2115 [2022-12-13 20:43:37,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-12-13 20:43:37,375 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1153 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:37,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 3672 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 20:43:37,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2022-12-13 20:43:37,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1348. [2022-12-13 20:43:37,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1205 states have (on average 1.3385892116182572) internal successors, (1613), 1224 states have internal predecessors, (1613), 85 states have call successors, (85), 47 states have call predecessors, (85), 56 states have return successors, (118), 77 states have call predecessors, (118), 82 states have call successors, (118) [2022-12-13 20:43:37,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1816 transitions. [2022-12-13 20:43:37,444 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1816 transitions. Word has length 69 [2022-12-13 20:43:37,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:37,444 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 1816 transitions. [2022-12-13 20:43:37,445 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) [2022-12-13 20:43:37,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1816 transitions. [2022-12-13 20:43:37,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-13 20:43:37,447 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:37,447 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] [2022-12-13 20:43:37,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:43:37,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:43:37,648 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:37,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:37,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1486258056, now seen corresponding path program 1 times [2022-12-13 20:43:37,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:37,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544543542] [2022-12-13 20:43:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:37,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 20:43:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:37,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:43:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 20:43:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:37,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 20:43:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 20:43:37,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:37,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544543542] [2022-12-13 20:43:37,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544543542] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:43:37,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117046885] [2022-12-13 20:43:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:37,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:43:37,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:43:37,734 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:43:37,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:43:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:37,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:43:37,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:43:37,845 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 20:43:37,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:43:37,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117046885] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:37,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:43:37,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-13 20:43:37,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489452438] [2022-12-13 20:43:37,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:37,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:43:37,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:37,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:43:37,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:43:37,848 INFO L87 Difference]: Start difference. First operand 1348 states and 1816 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) [2022-12-13 20:43:37,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:37,916 INFO L93 Difference]: Finished difference Result 2071 states and 2754 transitions. [2022-12-13 20:43:37,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:43:37,917 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 [2022-12-13 20:43:37,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:37,922 INFO L225 Difference]: With dead ends: 2071 [2022-12-13 20:43:37,922 INFO L226 Difference]: Without dead ends: 1226 [2022-12-13 20:43:37,925 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 [2022-12-13 20:43:37,925 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 578 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 717 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 [2022-12-13 20:43:37,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 717 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:43:37,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2022-12-13 20:43:37,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1211. [2022-12-13 20:43:37,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1084 states have (on average 1.3422509225092252) internal successors, (1455), 1102 states have internal predecessors, (1455), 77 states have call successors, (77), 41 states have call predecessors, (77), 48 states have return successors, (104), 68 states have call predecessors, (104), 74 states have call successors, (104) [2022-12-13 20:43:37,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1636 transitions. [2022-12-13 20:43:37,997 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1636 transitions. Word has length 88 [2022-12-13 20:43:37,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:37,997 INFO L495 AbstractCegarLoop]: Abstraction has 1211 states and 1636 transitions. [2022-12-13 20:43:37,997 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) [2022-12-13 20:43:37,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1636 transitions. [2022-12-13 20:43:37,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 20:43:37,999 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:38,000 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] [2022-12-13 20:43:38,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:43:38,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:43:38,200 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:38,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:38,200 INFO L85 PathProgramCache]: Analyzing trace with hash 125293381, now seen corresponding path program 1 times [2022-12-13 20:43:38,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:38,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281287119] [2022-12-13 20:43:38,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:38,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:38,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 20:43:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:38,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 20:43:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:38,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:43:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:38,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 20:43:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:38,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 20:43:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 20:43:38,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:38,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281287119] [2022-12-13 20:43:38,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281287119] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:43:38,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973766018] [2022-12-13 20:43:38,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:38,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:43:38,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:43:38,293 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:43:38,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:43:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:38,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:43:38,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:43:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 20:43:38,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:43:38,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973766018] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:38,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:43:38,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-13 20:43:38,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719754513] [2022-12-13 20:43:38,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:38,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:43:38,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:38,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:43:38,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:43:38,413 INFO L87 Difference]: Start difference. First operand 1211 states and 1636 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) [2022-12-13 20:43:38,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:38,463 INFO L93 Difference]: Finished difference Result 1480 states and 1977 transitions. [2022-12-13 20:43:38,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:43:38,464 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 [2022-12-13 20:43:38,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:38,465 INFO L225 Difference]: With dead ends: 1480 [2022-12-13 20:43:38,465 INFO L226 Difference]: Without dead ends: 335 [2022-12-13 20:43:38,467 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 [2022-12-13 20:43:38,467 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 59 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:38,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1252 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:43:38,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-12-13 20:43:38,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2022-12-13 20:43:38,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 302 states have (on average 1.576158940397351) internal successors, (476), 304 states have internal predecessors, (476), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-13 20:43:38,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 526 transitions. [2022-12-13 20:43:38,479 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 526 transitions. Word has length 103 [2022-12-13 20:43:38,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:38,479 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 526 transitions. [2022-12-13 20:43:38,479 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) [2022-12-13 20:43:38,479 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 526 transitions. [2022-12-13 20:43:38,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:43:38,480 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:38,480 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:43:38,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:43:38,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f94d56-35af-409c-82a6-4420225dc256/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 20:43:38,681 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:38,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:38,682 INFO L85 PathProgramCache]: Analyzing trace with hash 638824151, now seen corresponding path program 1 times [2022-12-13 20:43:38,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:38,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368412451] [2022-12-13 20:43:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:38,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:38,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:43:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:38,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:43:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:38,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:43:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:38,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:43:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:38,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:43:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:38,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:38,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368412451] [2022-12-13 20:43:38,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368412451] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:38,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:43:38,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:43:38,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565423593] [2022-12-13 20:43:38,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:38,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:43:38,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:38,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:43:38,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:43:38,921 INFO L87 Difference]: Start difference. First operand 335 states and 526 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:40,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:40,069 INFO L93 Difference]: Finished difference Result 782 states and 1248 transitions. [2022-12-13 20:43:40,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:43:40,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:43:40,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:40,071 INFO L225 Difference]: With dead ends: 782 [2022-12-13 20:43:40,071 INFO L226 Difference]: Without dead ends: 455 [2022-12-13 20:43:40,072 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 [2022-12-13 20:43:40,072 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 897 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:40,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 669 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 20:43:40,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-12-13 20:43:40,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 335. [2022-12-13 20:43:40,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 302 states have (on average 1.5728476821192052) internal successors, (475), 304 states have internal predecessors, (475), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-13 20:43:40,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 525 transitions. [2022-12-13 20:43:40,094 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 525 transitions. Word has length 157 [2022-12-13 20:43:40,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:40,094 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 525 transitions. [2022-12-13 20:43:40,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:40,095 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 525 transitions. [2022-12-13 20:43:40,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:43:40,096 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:40,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:43:40,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 20:43:40,096 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:40,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:40,097 INFO L85 PathProgramCache]: Analyzing trace with hash 903471641, now seen corresponding path program 1 times [2022-12-13 20:43:40,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:40,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737778321] [2022-12-13 20:43:40,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:40,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:40,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:43:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:40,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:43:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:40,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:43:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:40,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:43:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:40,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:43:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:40,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:40,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:40,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737778321] [2022-12-13 20:43:40,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737778321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:40,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:43:40,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:43:40,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061181993] [2022-12-13 20:43:40,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:40,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:43:40,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:40,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:43:40,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:43:40,204 INFO L87 Difference]: Start difference. First operand 335 states and 525 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:41,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:41,403 INFO L93 Difference]: Finished difference Result 774 states and 1231 transitions. [2022-12-13 20:43:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:43:41,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:43:41,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:41,405 INFO L225 Difference]: With dead ends: 774 [2022-12-13 20:43:41,405 INFO L226 Difference]: Without dead ends: 455 [2022-12-13 20:43:41,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:43:41,406 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 888 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:41,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 667 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 20:43:41,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-12-13 20:43:41,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 335. [2022-12-13 20:43:41,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 302 states have (on average 1.5695364238410596) internal successors, (474), 304 states have internal predecessors, (474), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-13 20:43:41,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 524 transitions. [2022-12-13 20:43:41,430 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 524 transitions. Word has length 157 [2022-12-13 20:43:41,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:41,430 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 524 transitions. [2022-12-13 20:43:41,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:41,431 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 524 transitions. [2022-12-13 20:43:41,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:43:41,432 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:41,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:43:41,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 20:43:41,432 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:41,432 INFO L85 PathProgramCache]: Analyzing trace with hash 492861275, now seen corresponding path program 1 times [2022-12-13 20:43:41,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:41,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377716043] [2022-12-13 20:43:41,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:41,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:41,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:43:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:41,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:43:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:41,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:43:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:41,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:43:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:41,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:43:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:41,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:41,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377716043] [2022-12-13 20:43:41,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377716043] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:41,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:43:41,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 20:43:41,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671576655] [2022-12-13 20:43:41,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:41,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:43:41,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:41,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:43:41,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:43:41,583 INFO L87 Difference]: Start difference. First operand 335 states and 524 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:43,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:43,717 INFO L93 Difference]: Finished difference Result 1221 states and 1955 transitions. [2022-12-13 20:43:43,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 20:43:43,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:43:43,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:43,720 INFO L225 Difference]: With dead ends: 1221 [2022-12-13 20:43:43,720 INFO L226 Difference]: Without dead ends: 905 [2022-12-13 20:43:43,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:43:43,721 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 1346 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 2139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:43,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1363 Valid, 1172 Invalid, 2139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 20:43:43,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-12-13 20:43:43,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 664. [2022-12-13 20:43:43,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 605 states have (on average 1.5834710743801652) internal successors, (958), 608 states have internal predecessors, (958), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2022-12-13 20:43:43,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1049 transitions. [2022-12-13 20:43:43,777 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1049 transitions. Word has length 157 [2022-12-13 20:43:43,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:43,777 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 1049 transitions. [2022-12-13 20:43:43,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:43,778 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1049 transitions. [2022-12-13 20:43:43,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:43:43,779 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:43,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:43:43,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 20:43:43,779 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:43,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:43,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1158896471, now seen corresponding path program 1 times [2022-12-13 20:43:43,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:43,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897941670] [2022-12-13 20:43:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:43,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:43,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:43:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:43,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:43:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:43,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:43:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:43,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:43:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:43,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:43:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:43,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:43,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897941670] [2022-12-13 20:43:43,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897941670] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:43,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:43:43,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:43:43,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899862862] [2022-12-13 20:43:43,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:43,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:43:43,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:43,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:43:43,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:43:43,942 INFO L87 Difference]: Start difference. First operand 664 states and 1049 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:46,534 INFO L93 Difference]: Finished difference Result 2014 states and 3231 transitions. [2022-12-13 20:43:46,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:43:46,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:43:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:46,538 INFO L225 Difference]: With dead ends: 2014 [2022-12-13 20:43:46,538 INFO L226 Difference]: Without dead ends: 1369 [2022-12-13 20:43:46,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:43:46,539 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1381 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 3064 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 3127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:46,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 2201 Invalid, 3127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3064 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 20:43:46,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-12-13 20:43:46,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 970. [2022-12-13 20:43:46,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 885 states have (on average 1.577401129943503) internal successors, (1396), 889 states have internal predecessors, (1396), 64 states have call successors, (64), 19 states have call predecessors, (64), 20 states have return successors, (67), 63 states have call predecessors, (67), 62 states have call successors, (67) [2022-12-13 20:43:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1527 transitions. [2022-12-13 20:43:46,621 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1527 transitions. Word has length 157 [2022-12-13 20:43:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:46,621 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1527 transitions. [2022-12-13 20:43:46,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:46,622 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1527 transitions. [2022-12-13 20:43:46,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:43:46,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:46,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:43:46,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 20:43:46,624 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:46,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:46,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1737117223, now seen corresponding path program 1 times [2022-12-13 20:43:46,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:46,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599423760] [2022-12-13 20:43:46,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:46,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:46,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:43:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:46,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:43:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:46,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:43:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:46,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:43:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:46,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:43:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:46,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:46,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599423760] [2022-12-13 20:43:46,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599423760] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:46,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:43:46,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:43:46,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405310108] [2022-12-13 20:43:46,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:46,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:43:46,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:46,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:43:46,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:43:46,776 INFO L87 Difference]: Start difference. First operand 970 states and 1527 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:49,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:49,444 INFO L93 Difference]: Finished difference Result 3182 states and 5097 transitions. [2022-12-13 20:43:49,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:43:49,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:43:49,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:49,450 INFO L225 Difference]: With dead ends: 3182 [2022-12-13 20:43:49,450 INFO L226 Difference]: Without dead ends: 2231 [2022-12-13 20:43:49,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:43:49,452 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 1373 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 3050 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 3115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:49,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 2199 Invalid, 3115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3050 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 20:43:49,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2022-12-13 20:43:49,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 1586. [2022-12-13 20:43:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1586 states, 1449 states have (on average 1.572808833678399) internal successors, (2279), 1455 states have internal predecessors, (2279), 102 states have call successors, (102), 31 states have call predecessors, (102), 34 states have return successors, (113), 103 states have call predecessors, (113), 100 states have call successors, (113) [2022-12-13 20:43:49,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2494 transitions. [2022-12-13 20:43:49,600 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2494 transitions. Word has length 157 [2022-12-13 20:43:49,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:49,600 INFO L495 AbstractCegarLoop]: Abstraction has 1586 states and 2494 transitions. [2022-12-13 20:43:49,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:49,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2494 transitions. [2022-12-13 20:43:49,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:43:49,603 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:49,603 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:43:49,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 20:43:49,603 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:49,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:49,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1373650725, now seen corresponding path program 1 times [2022-12-13 20:43:49,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:49,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838409635] [2022-12-13 20:43:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:49,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:49,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:43:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:49,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:43:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:49,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:43:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:49,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:43:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:49,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:43:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:49,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:49,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:49,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838409635] [2022-12-13 20:43:49,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838409635] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:49,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:43:49,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:43:49,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256997776] [2022-12-13 20:43:49,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:49,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:43:49,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:49,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:43:49,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:43:49,760 INFO L87 Difference]: Start difference. First operand 1586 states and 2494 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:53,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:53,175 INFO L93 Difference]: Finished difference Result 5436 states and 8676 transitions. [2022-12-13 20:43:53,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:43:53,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:43:53,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:53,184 INFO L225 Difference]: With dead ends: 5436 [2022-12-13 20:43:53,185 INFO L226 Difference]: Without dead ends: 3869 [2022-12-13 20:43:53,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:43:53,188 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 1372 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 3037 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:53,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 2199 Invalid, 3102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3037 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 20:43:53,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3869 states. [2022-12-13 20:43:53,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3869 to 2819. [2022-12-13 20:43:53,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2578 states have (on average 1.569045771916214) internal successors, (4045), 2588 states have internal predecessors, (4045), 178 states have call successors, (178), 55 states have call predecessors, (178), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2022-12-13 20:43:53,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 4434 transitions. [2022-12-13 20:43:53,574 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 4434 transitions. Word has length 157 [2022-12-13 20:43:53,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:53,575 INFO L495 AbstractCegarLoop]: Abstraction has 2819 states and 4434 transitions. [2022-12-13 20:43:53,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:53,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 4434 transitions. [2022-12-13 20:43:53,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:43:53,577 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:53,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:43:53,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 20:43:53,577 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:53,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:53,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1084831335, now seen corresponding path program 1 times [2022-12-13 20:43:53,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:53,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449468625] [2022-12-13 20:43:53,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:53,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:53,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:43:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:53,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:43:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:53,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:43:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:53,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:43:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:53,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:43:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:53,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:53,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449468625] [2022-12-13 20:43:53,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449468625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:53,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:43:53,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:43:53,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001874333] [2022-12-13 20:43:53,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:53,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:43:53,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:53,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:43:53,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:43:53,728 INFO L87 Difference]: Start difference. First operand 2819 states and 4434 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:55,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:55,245 INFO L93 Difference]: Finished difference Result 6690 states and 10683 transitions. [2022-12-13 20:43:55,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:43:55,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:43:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:55,254 INFO L225 Difference]: With dead ends: 6690 [2022-12-13 20:43:55,255 INFO L226 Difference]: Without dead ends: 3890 [2022-12-13 20:43:55,258 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 [2022-12-13 20:43:55,259 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 989 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:55,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 1109 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 20:43:55,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2022-12-13 20:43:55,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 2819. [2022-12-13 20:43:55,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2578 states have (on average 1.5655546935609) internal successors, (4036), 2588 states have internal predecessors, (4036), 178 states have call successors, (178), 55 states have call predecessors, (178), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2022-12-13 20:43:55,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 4425 transitions. [2022-12-13 20:43:55,538 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 4425 transitions. Word has length 157 [2022-12-13 20:43:55,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:55,539 INFO L495 AbstractCegarLoop]: Abstraction has 2819 states and 4425 transitions. [2022-12-13 20:43:55,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:55,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 4425 transitions. [2022-12-13 20:43:55,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:43:55,541 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:55,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:43:55,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 20:43:55,541 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:55,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:55,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1629703909, now seen corresponding path program 1 times [2022-12-13 20:43:55,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:55,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737882801] [2022-12-13 20:43:55,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:55,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:55,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:43:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:55,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:43:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:55,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:43:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:55,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:43:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:55,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:43:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:55,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:55,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737882801] [2022-12-13 20:43:55,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737882801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:55,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:43:55,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:43:55,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360669869] [2022-12-13 20:43:55,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:55,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:43:55,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:55,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:43:55,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:43:55,700 INFO L87 Difference]: Start difference. First operand 2819 states and 4425 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:57,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:57,358 INFO L93 Difference]: Finished difference Result 6680 states and 10636 transitions. [2022-12-13 20:43:57,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:43:57,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:43:57,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:57,367 INFO L225 Difference]: With dead ends: 6680 [2022-12-13 20:43:57,367 INFO L226 Difference]: Without dead ends: 3880 [2022-12-13 20:43:57,371 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 [2022-12-13 20:43:57,371 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1130 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:57,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 932 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 20:43:57,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3880 states. [2022-12-13 20:43:57,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3880 to 2819. [2022-12-13 20:43:57,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2578 states have (on average 1.5620636152055858) internal successors, (4027), 2588 states have internal predecessors, (4027), 178 states have call successors, (178), 55 states have call predecessors, (178), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2022-12-13 20:43:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 4416 transitions. [2022-12-13 20:43:57,666 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 4416 transitions. Word has length 157 [2022-12-13 20:43:57,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:43:57,666 INFO L495 AbstractCegarLoop]: Abstraction has 2819 states and 4416 transitions. [2022-12-13 20:43:57,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:57,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 4416 transitions. [2022-12-13 20:43:57,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:43:57,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:43:57,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:43:57,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 20:43:57,668 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:43:57,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:57,669 INFO L85 PathProgramCache]: Analyzing trace with hash -954543783, now seen corresponding path program 1 times [2022-12-13 20:43:57,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:57,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768280524] [2022-12-13 20:43:57,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:57,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:57,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:43:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:57,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:43:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:43:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:57,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:43:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:57,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:43:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:43:57,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:57,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768280524] [2022-12-13 20:43:57,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768280524] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:43:57,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:43:57,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:43:57,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96876885] [2022-12-13 20:43:57,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:43:57,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:43:57,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:57,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:43:57,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:43:57,806 INFO L87 Difference]: Start difference. First operand 2819 states and 4416 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:43:59,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:43:59,830 INFO L93 Difference]: Finished difference Result 6670 states and 10589 transitions. [2022-12-13 20:43:59,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:43:59,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:43:59,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:43:59,838 INFO L225 Difference]: With dead ends: 6670 [2022-12-13 20:43:59,838 INFO L226 Difference]: Without dead ends: 3870 [2022-12-13 20:43:59,842 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 [2022-12-13 20:43:59,842 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1128 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:43:59,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 932 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 20:43:59,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2022-12-13 20:44:00,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 2819. [2022-12-13 20:44:00,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2578 states have (on average 1.5585725368502716) internal successors, (4018), 2588 states have internal predecessors, (4018), 178 states have call successors, (178), 55 states have call predecessors, (178), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2022-12-13 20:44:00,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 4407 transitions. [2022-12-13 20:44:00,149 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 4407 transitions. Word has length 157 [2022-12-13 20:44:00,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:44:00,150 INFO L495 AbstractCegarLoop]: Abstraction has 2819 states and 4407 transitions. [2022-12-13 20:44:00,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:44:00,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 4407 transitions. [2022-12-13 20:44:00,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:44:00,152 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:44:00,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:44:00,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 20:44:00,152 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:44:00,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:44:00,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1902595749, now seen corresponding path program 1 times [2022-12-13 20:44:00,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:44:00,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65450125] [2022-12-13 20:44:00,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:44:00,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:44:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:00,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:44:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:00,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:44:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:00,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:44:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:00,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:44:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:00,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:44:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:00,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:44:00,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:44:00,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65450125] [2022-12-13 20:44:00,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65450125] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:44:00,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:44:00,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:44:00,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962494206] [2022-12-13 20:44:00,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:44:00,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:44:00,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:44:00,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:44:00,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:44:00,301 INFO L87 Difference]: Start difference. First operand 2819 states and 4407 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:44:03,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:44:03,721 INFO L93 Difference]: Finished difference Result 9913 states and 15658 transitions. [2022-12-13 20:44:03,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:44:03,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:44:03,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:44:03,736 INFO L225 Difference]: With dead ends: 9913 [2022-12-13 20:44:03,736 INFO L226 Difference]: Without dead ends: 7113 [2022-12-13 20:44:03,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:44:03,741 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 1350 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 2949 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 3014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:44:03,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1367 Valid, 2199 Invalid, 3014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2949 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 20:44:03,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2022-12-13 20:44:04,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 5319. [2022-12-13 20:44:04,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 4870 states have (on average 1.5535934291581108) internal successors, (7566), 4888 states have internal predecessors, (7566), 330 states have call successors, (330), 103 states have call predecessors, (330), 118 states have return successors, (425), 343 states have call predecessors, (425), 328 states have call successors, (425) [2022-12-13 20:44:04,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 8321 transitions. [2022-12-13 20:44:04,348 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 8321 transitions. Word has length 157 [2022-12-13 20:44:04,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:44:04,348 INFO L495 AbstractCegarLoop]: Abstraction has 5319 states and 8321 transitions. [2022-12-13 20:44:04,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:44:04,349 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 8321 transitions. [2022-12-13 20:44:04,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:44:04,350 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:44:04,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:44:04,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 20:44:04,351 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:44:04,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:44:04,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1807599897, now seen corresponding path program 1 times [2022-12-13 20:44:04,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:44:04,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286442190] [2022-12-13 20:44:04,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:44:04,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:44:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:04,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:44:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:04,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:44:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:04,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:44:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:04,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:44:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:04,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:44:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:44:04,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:44:04,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286442190] [2022-12-13 20:44:04,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286442190] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:44:04,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:44:04,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:44:04,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875485120] [2022-12-13 20:44:04,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:44:04,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:44:04,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:44:04,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:44:04,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:44:04,488 INFO L87 Difference]: Start difference. First operand 5319 states and 8321 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:44:06,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:44:06,562 INFO L93 Difference]: Finished difference Result 12474 states and 19764 transitions. [2022-12-13 20:44:06,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:44:06,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:44:06,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:44:06,577 INFO L225 Difference]: With dead ends: 12474 [2022-12-13 20:44:06,577 INFO L226 Difference]: Without dead ends: 7174 [2022-12-13 20:44:06,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:44:06,585 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1133 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 20:44:06,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 932 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 20:44:06,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7174 states. [2022-12-13 20:44:07,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7174 to 5319. [2022-12-13 20:44:07,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 4870 states have (on average 1.5501026694045175) internal successors, (7549), 4888 states have internal predecessors, (7549), 330 states have call successors, (330), 103 states have call predecessors, (330), 118 states have return successors, (425), 343 states have call predecessors, (425), 328 states have call successors, (425) [2022-12-13 20:44:07,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 8304 transitions. [2022-12-13 20:44:07,228 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 8304 transitions. Word has length 157 [2022-12-13 20:44:07,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:44:07,228 INFO L495 AbstractCegarLoop]: Abstraction has 5319 states and 8304 transitions. [2022-12-13 20:44:07,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:44:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 8304 transitions. [2022-12-13 20:44:07,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:44:07,230 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:44:07,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:44:07,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 20:44:07,230 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:44:07,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:44:07,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1373094299, now seen corresponding path program 1 times [2022-12-13 20:44:07,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:44:07,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261605468] [2022-12-13 20:44:07,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:44:07,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:44:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:07,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:44:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:07,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:44:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:07,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:44:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:07,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:44:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:44:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:07,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:44:07,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:44:07,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261605468] [2022-12-13 20:44:07,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261605468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:44:07,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:44:07,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:44:07,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904255526] [2022-12-13 20:44:07,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:44:07,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:44:07,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:44:07,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:44:07,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:44:07,392 INFO L87 Difference]: Start difference. First operand 5319 states and 8304 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:44:12,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:44:12,987 INFO L93 Difference]: Finished difference Result 21279 states and 33424 transitions. [2022-12-13 20:44:12,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:44:12,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:44:12,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:44:13,020 INFO L225 Difference]: With dead ends: 21279 [2022-12-13 20:44:13,020 INFO L226 Difference]: Without dead ends: 15979 [2022-12-13 20:44:13,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:44:13,031 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1752 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 2885 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 2955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:44:13,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1780 Valid, 2189 Invalid, 2955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2885 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 20:44:13,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15979 states. [2022-12-13 20:44:14,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15979 to 10314. [2022-12-13 20:44:14,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10314 states, 9465 states have (on average 1.5487585842577918) internal successors, (14659), 9499 states have internal predecessors, (14659), 618 states have call successors, (618), 199 states have call predecessors, (618), 230 states have return successors, (891), 647 states have call predecessors, (891), 616 states have call successors, (891) [2022-12-13 20:44:14,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10314 states to 10314 states and 16168 transitions. [2022-12-13 20:44:14,529 INFO L78 Accepts]: Start accepts. Automaton has 10314 states and 16168 transitions. Word has length 157 [2022-12-13 20:44:14,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:44:14,529 INFO L495 AbstractCegarLoop]: Abstraction has 10314 states and 16168 transitions. [2022-12-13 20:44:14,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:44:14,529 INFO L276 IsEmpty]: Start isEmpty. Operand 10314 states and 16168 transitions. [2022-12-13 20:44:14,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:44:14,534 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:44:14,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:44:14,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 20:44:14,534 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:44:14,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:44:14,535 INFO L85 PathProgramCache]: Analyzing trace with hash 666497693, now seen corresponding path program 1 times [2022-12-13 20:44:14,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:44:14,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051847767] [2022-12-13 20:44:14,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:44:14,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:44:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:14,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:44:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:14,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:44:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:14,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:44:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:14,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:44:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:14,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:44:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:44:14,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:44:14,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051847767] [2022-12-13 20:44:14,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051847767] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:44:14,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:44:14,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:44:14,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322181986] [2022-12-13 20:44:14,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:44:14,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:44:14,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:44:14,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:44:14,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:44:14,667 INFO L87 Difference]: Start difference. First operand 10314 states and 16168 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:44:23,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:44:23,791 INFO L93 Difference]: Finished difference Result 41168 states and 64906 transitions. [2022-12-13 20:44:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:44:23,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:44:23,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:44:23,857 INFO L225 Difference]: With dead ends: 41168 [2022-12-13 20:44:23,857 INFO L226 Difference]: Without dead ends: 30873 [2022-12-13 20:44:23,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:44:23,878 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 1435 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 3486 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 3553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 20:44:23,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 2185 Invalid, 3553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3486 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 20:44:23,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30873 states. [2022-12-13 20:44:26,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30873 to 19963. [2022-12-13 20:44:26,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19963 states, 18330 states have (on average 1.5444080741953083) internal successors, (28309), 18396 states have internal predecessors, (28309), 1178 states have call successors, (1178), 391 states have call predecessors, (1178), 454 states have return successors, (1969), 1239 states have call predecessors, (1969), 1176 states have call successors, (1969) [2022-12-13 20:44:26,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19963 states to 19963 states and 31456 transitions. [2022-12-13 20:44:26,742 INFO L78 Accepts]: Start accepts. Automaton has 19963 states and 31456 transitions. Word has length 157 [2022-12-13 20:44:26,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:44:26,743 INFO L495 AbstractCegarLoop]: Abstraction has 19963 states and 31456 transitions. [2022-12-13 20:44:26,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:44:26,743 INFO L276 IsEmpty]: Start isEmpty. Operand 19963 states and 31456 transitions. [2022-12-13 20:44:26,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:44:26,748 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:44:26,748 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:44:26,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 20:44:26,748 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:44:26,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:44:26,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1613535579, now seen corresponding path program 1 times [2022-12-13 20:44:26,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:44:26,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028575599] [2022-12-13 20:44:26,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:44:26,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:44:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:26,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:44:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:26,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:44:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:26,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:44:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:26,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:44:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:26,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:44:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:44:26,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:44:26,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028575599] [2022-12-13 20:44:26,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028575599] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:44:26,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:44:26,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:44:26,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321350820] [2022-12-13 20:44:26,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:44:26,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:44:26,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:44:26,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:44:26,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:44:26,872 INFO L87 Difference]: Start difference. First operand 19963 states and 31456 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:44:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:44:41,819 INFO L93 Difference]: Finished difference Result 79391 states and 125808 transitions. [2022-12-13 20:44:41,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:44:41,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:44:41,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:44:41,965 INFO L225 Difference]: With dead ends: 79391 [2022-12-13 20:44:41,965 INFO L226 Difference]: Without dead ends: 59447 [2022-12-13 20:44:42,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:44:42,011 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1672 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 2859 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 2929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:44:42,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 2189 Invalid, 2929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2859 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 20:44:42,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59447 states. [2022-12-13 20:44:48,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59447 to 39548. [2022-12-13 20:44:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39548 states, 36379 states have (on average 1.5452596278072515) internal successors, (56215), 36509 states have internal predecessors, (56215), 2266 states have call successors, (2266), 775 states have call predecessors, (2266), 902 states have return successors, (4579), 2391 states have call predecessors, (4579), 2264 states have call successors, (4579) [2022-12-13 20:44:48,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39548 states to 39548 states and 63060 transitions. [2022-12-13 20:44:48,218 INFO L78 Accepts]: Start accepts. Automaton has 39548 states and 63060 transitions. Word has length 157 [2022-12-13 20:44:48,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:44:48,218 INFO L495 AbstractCegarLoop]: Abstraction has 39548 states and 63060 transitions. [2022-12-13 20:44:48,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:44:48,218 INFO L276 IsEmpty]: Start isEmpty. Operand 39548 states and 63060 transitions. [2022-12-13 20:44:48,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:44:48,227 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:44:48,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:44:48,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 20:44:48,228 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:44:48,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:44:48,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1819598115, now seen corresponding path program 1 times [2022-12-13 20:44:48,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:44:48,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489836448] [2022-12-13 20:44:48,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:44:48,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:44:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:48,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:44:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:48,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:44:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:48,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:44:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:48,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:44:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:48,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:44:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:44:48,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:44:48,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:44:48,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489836448] [2022-12-13 20:44:48,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489836448] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:44:48,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:44:48,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:44:48,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439608455] [2022-12-13 20:44:48,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:44:48,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:44:48,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:44:48,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:44:48,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:44:48,342 INFO L87 Difference]: Start difference. First operand 39548 states and 63060 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:45:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:45:16,509 INFO L93 Difference]: Finished difference Result 155550 states and 249334 transitions. [2022-12-13 20:45:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:45:16,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:45:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:45:16,885 INFO L225 Difference]: With dead ends: 155550 [2022-12-13 20:45:16,885 INFO L226 Difference]: Without dead ends: 116021 [2022-12-13 20:45:16,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:45:16,959 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1414 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 3359 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:45:16,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 2189 Invalid, 3426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3359 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 20:45:17,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116021 states. [2022-12-13 20:45:28,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116021 to 78653. [2022-12-13 20:45:28,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78653 states, 72476 states have (on average 1.546567139466858) internal successors, (112089), 72734 states have internal predecessors, (112089), 4378 states have call successors, (4378), 1543 states have call predecessors, (4378), 1798 states have return successors, (11193), 4631 states have call predecessors, (11193), 4376 states have call successors, (11193) [2022-12-13 20:45:29,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78653 states to 78653 states and 127660 transitions. [2022-12-13 20:45:29,175 INFO L78 Accepts]: Start accepts. Automaton has 78653 states and 127660 transitions. Word has length 157 [2022-12-13 20:45:29,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:45:29,175 INFO L495 AbstractCegarLoop]: Abstraction has 78653 states and 127660 transitions. [2022-12-13 20:45:29,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:45:29,175 INFO L276 IsEmpty]: Start isEmpty. Operand 78653 states and 127660 transitions. [2022-12-13 20:45:29,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:45:29,195 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:45:29,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:29,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 20:45:29,196 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:45:29,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:29,196 INFO L85 PathProgramCache]: Analyzing trace with hash 424960283, now seen corresponding path program 1 times [2022-12-13 20:45:29,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:29,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876489552] [2022-12-13 20:45:29,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:29,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:29,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:45:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:29,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:45:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:29,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:45:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:29,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:45:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:29,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:45:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:45:29,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:29,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876489552] [2022-12-13 20:45:29,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876489552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:29,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:29,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:45:29,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213317679] [2022-12-13 20:45:29,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:29,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:45:29,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:29,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:45:29,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:45:29,324 INFO L87 Difference]: Start difference. First operand 78653 states and 127660 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:46:26,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:46:26,429 INFO L93 Difference]: Finished difference Result 305501 states and 498444 transitions. [2022-12-13 20:46:26,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:46:26,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:46:26,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:46:27,199 INFO L225 Difference]: With dead ends: 305501 [2022-12-13 20:46:27,199 INFO L226 Difference]: Without dead ends: 226867 [2022-12-13 20:46:27,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:46:27,416 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1592 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 2833 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:46:27,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 2189 Invalid, 2903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2833 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 20:46:27,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226867 states. [2022-12-13 20:46:52,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226867 to 156734. [2022-12-13 20:46:52,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156734 states, 144669 states have (on average 1.5481063669479986) internal successors, (223963), 145183 states have internal predecessors, (223963), 8474 states have call successors, (8474), 3079 states have call predecessors, (8474), 3590 states have return successors, (28667), 8983 states have call predecessors, (28667), 8472 states have call successors, (28667) [2022-12-13 20:46:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156734 states to 156734 states and 261104 transitions. [2022-12-13 20:46:53,454 INFO L78 Accepts]: Start accepts. Automaton has 156734 states and 261104 transitions. Word has length 157 [2022-12-13 20:46:53,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:46:53,454 INFO L495 AbstractCegarLoop]: Abstraction has 156734 states and 261104 transitions. [2022-12-13 20:46:53,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:46:53,454 INFO L276 IsEmpty]: Start isEmpty. Operand 156734 states and 261104 transitions. [2022-12-13 20:46:53,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:46:53,499 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:46:53,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:46:53,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 20:46:53,499 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:46:53,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:46:53,499 INFO L85 PathProgramCache]: Analyzing trace with hash 913007389, now seen corresponding path program 1 times [2022-12-13 20:46:53,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:46:53,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548110219] [2022-12-13 20:46:53,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:46:53,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:46:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:46:53,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:46:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:46:53,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:46:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:46:53,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:46:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:46:53,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:46:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:46:53,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:46:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:46:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:46:53,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:46:53,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548110219] [2022-12-13 20:46:53,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548110219] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:46:53,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:46:53,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:46:53,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192286725] [2022-12-13 20:46:53,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:46:53,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:46:53,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:46:53,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:46:53,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:46:53,608 INFO L87 Difference]: Start difference. First operand 156734 states and 261104 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:47:41,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:47:41,478 INFO L93 Difference]: Finished difference Result 359738 states and 614647 transitions. [2022-12-13 20:47:41,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:47:41,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:47:41,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:47:42,196 INFO L225 Difference]: With dead ends: 359738 [2022-12-13 20:47:42,196 INFO L226 Difference]: Without dead ends: 203023 [2022-12-13 20:47:42,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:47:42,528 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1132 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:47:42,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 930 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 20:47:42,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203023 states. [2022-12-13 20:48:10,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203023 to 156734. [2022-12-13 20:48:10,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156734 states, 144669 states have (on average 1.5445603411926536) internal successors, (223450), 145183 states have internal predecessors, (223450), 8474 states have call successors, (8474), 3079 states have call predecessors, (8474), 3590 states have return successors, (28667), 8983 states have call predecessors, (28667), 8472 states have call successors, (28667) [2022-12-13 20:48:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156734 states to 156734 states and 260591 transitions. [2022-12-13 20:48:11,161 INFO L78 Accepts]: Start accepts. Automaton has 156734 states and 260591 transitions. Word has length 157 [2022-12-13 20:48:11,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:48:11,162 INFO L495 AbstractCegarLoop]: Abstraction has 156734 states and 260591 transitions. [2022-12-13 20:48:11,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:48:11,162 INFO L276 IsEmpty]: Start isEmpty. Operand 156734 states and 260591 transitions. [2022-12-13 20:48:11,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:48:11,207 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:48:11,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:48:11,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 20:48:11,207 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:48:11,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:48:11,208 INFO L85 PathProgramCache]: Analyzing trace with hash -179627813, now seen corresponding path program 1 times [2022-12-13 20:48:11,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:48:11,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855567461] [2022-12-13 20:48:11,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:48:11,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:48:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:11,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:48:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:11,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:48:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:11,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:48:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:11,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:48:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:11,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:48:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:48:11,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:48:11,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:48:11,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855567461] [2022-12-13 20:48:11,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855567461] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:48:11,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:48:11,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:48:11,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461807099] [2022-12-13 20:48:11,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:48:11,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:48:11,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:48:11,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:48:11,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:48:11,333 INFO L87 Difference]: Start difference. First operand 156734 states and 260591 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:50:02,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:50:02,973 INFO L93 Difference]: Finished difference Result 592986 states and 992778 transitions. [2022-12-13 20:50:02,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:50:02,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:50:02,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:50:04,681 INFO L225 Difference]: With dead ends: 592986 [2022-12-13 20:50:04,682 INFO L226 Difference]: Without dead ends: 436271 [2022-12-13 20:50:05,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:50:05,146 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1381 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 3150 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 20:50:05,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1397 Valid, 2189 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3150 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 20:50:05,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436271 states. [2022-12-13 20:51:00,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436271 to 313152. [2022-12-13 20:51:00,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313152 states, 289567 states have (on average 1.5452520487486487) internal successors, (447454), 290593 states have internal predecessors, (447454), 16410 states have call successors, (16410), 6151 states have call predecessors, (16410), 7174 states have return successors, (76481), 17431 states have call predecessors, (76481), 16408 states have call successors, (76481) [2022-12-13 20:51:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313152 states to 313152 states and 540345 transitions. [2022-12-13 20:51:01,652 INFO L78 Accepts]: Start accepts. Automaton has 313152 states and 540345 transitions. Word has length 157 [2022-12-13 20:51:01,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:51:01,652 INFO L495 AbstractCegarLoop]: Abstraction has 313152 states and 540345 transitions. [2022-12-13 20:51:01,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:51:01,652 INFO L276 IsEmpty]: Start isEmpty. Operand 313152 states and 540345 transitions. [2022-12-13 20:51:01,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 20:51:01,743 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:51:01,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:51:01,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 20:51:01,744 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:51:01,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:01,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1461800099, now seen corresponding path program 1 times [2022-12-13 20:51:01,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:51:01,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861063125] [2022-12-13 20:51:01,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:01,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:51:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:01,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 20:51:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:01,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:51:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:01,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 20:51:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:01,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 20:51:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:01,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 20:51:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:01,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:51:01,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861063125] [2022-12-13 20:51:01,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861063125] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:01,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:01,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:51:01,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398592903] [2022-12-13 20:51:01,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:01,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:51:01,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:51:01,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:51:01,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:51:01,865 INFO L87 Difference]: Start difference. First operand 313152 states and 540345 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 20:54:31,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:54:31,521 INFO L93 Difference]: Finished difference Result 1151320 states and 2010654 transitions. [2022-12-13 20:54:31,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:54:31,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-12-13 20:54:31,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:54:35,049 INFO L225 Difference]: With dead ends: 1151320 [2022-12-13 20:54:35,050 INFO L226 Difference]: Without dead ends: 838187 [2022-12-13 20:54:36,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:54:36,252 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1356 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 3021 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 20:54:36,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 2189 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3021 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 20:54:36,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838187 states.