./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/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_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/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_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/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 8b411c6ac71505d2c5059a06fd3211eebca89561d9ac8be37f9ecc9ff82a7a16 --- 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 18:29:18,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:29:18,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:29:18,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:29:18,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:29:18,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:29:18,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:29:18,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:29:18,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:29:18,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:29:18,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:29:18,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:29:18,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:29:18,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:29:18,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:29:18,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:29:18,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:29:18,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:29:18,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:29:18,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:29:18,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:29:18,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:29:18,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:29:18,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:29:18,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:29:18,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:29:18,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:29:18,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:29:18,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:29:18,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:29:18,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:29:18,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:29:18,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:29:18,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:29:18,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:29:18,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:29:18,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:29:18,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:29:18,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:29:18,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:29:18,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:29:18,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:29:18,650 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:29:18,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:29:18,651 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:29:18,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:29:18,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:29:18,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:29:18,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:29:18,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:29:18,652 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:29:18,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:29:18,652 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:29:18,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:29:18,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:29:18,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:29:18,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:29:18,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:29:18,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:29:18,653 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:29:18,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:29:18,653 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:29:18,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:29:18,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:29:18,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:29:18,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:29:18,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:29:18,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:29:18,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:29:18,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:29:18,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:29:18,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:29:18,655 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:29:18,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:29:18,655 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:29:18,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:29:18,655 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:29:18,655 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_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b411c6ac71505d2c5059a06fd3211eebca89561d9ac8be37f9ecc9ff82a7a16 [2022-12-13 18:29:18,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:29:18,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:29:18,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:29:18,840 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:29:18,840 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:29:18,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c [2022-12-13 18:29:21,346 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:29:21,529 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:29:21,530 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c [2022-12-13 18:29:21,541 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/data/b29a7ffa5/dbb1c06bb9944ff19f8cf93d02bcd74b/FLAG640462fb1 [2022-12-13 18:29:21,942 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/data/b29a7ffa5/dbb1c06bb9944ff19f8cf93d02bcd74b [2022-12-13 18:29:21,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:29:21,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:29:21,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:29:21,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:29:21,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:29:21,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:29:21" (1/1) ... [2022-12-13 18:29:21,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de73dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:21, skipping insertion in model container [2022-12-13 18:29:21,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:29:21" (1/1) ... [2022-12-13 18:29:21,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:29:21,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:29:22,114 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_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c[914,927] [2022-12-13 18:29:22,161 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_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c[7115,7128] [2022-12-13 18:29:22,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:29:22,226 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:29:22,235 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_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c[914,927] [2022-12-13 18:29:22,254 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_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c[7115,7128] [2022-12-13 18:29:22,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:29:22,304 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:29:22,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:22 WrapperNode [2022-12-13 18:29:22,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:29:22,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:29:22,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:29:22,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:29:22,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:22" (1/1) ... [2022-12-13 18:29:22,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:22" (1/1) ... [2022-12-13 18:29:22,343 INFO L138 Inliner]: procedures = 63, calls = 73, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 639 [2022-12-13 18:29:22,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:29:22,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:29:22,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:29:22,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:29:22,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:22" (1/1) ... [2022-12-13 18:29:22,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:22" (1/1) ... [2022-12-13 18:29:22,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:22" (1/1) ... [2022-12-13 18:29:22,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:22" (1/1) ... [2022-12-13 18:29:22,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:22" (1/1) ... [2022-12-13 18:29:22,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:22" (1/1) ... [2022-12-13 18:29:22,373 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:22" (1/1) ... [2022-12-13 18:29:22,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:22" (1/1) ... [2022-12-13 18:29:22,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:29:22,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:29:22,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:29:22,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:29:22,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:22" (1/1) ... [2022-12-13 18:29:22,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:29:22,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:22,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:29:22,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:29:22,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:29:22,440 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 18:29:22,441 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 18:29:22,441 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-12-13 18:29:22,441 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-12-13 18:29:22,441 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-12-13 18:29:22,441 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-12-13 18:29:22,441 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-12-13 18:29:22,442 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-12-13 18:29:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-12-13 18:29:22,442 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-12-13 18:29:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-12-13 18:29:22,442 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-12-13 18:29:22,442 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-12-13 18:29:22,442 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-12-13 18:29:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-12-13 18:29:22,443 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-12-13 18:29:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-12-13 18:29:22,443 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-12-13 18:29:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-12-13 18:29:22,443 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-12-13 18:29:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-12-13 18:29:22,443 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-12-13 18:29:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:29:22,443 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-12-13 18:29:22,444 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-12-13 18:29:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-12-13 18:29:22,444 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-12-13 18:29:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:29:22,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:29:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-12-13 18:29:22,444 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-12-13 18:29:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-12-13 18:29:22,445 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-12-13 18:29:22,532 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:29:22,534 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:29:23,029 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:29:23,038 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:29:23,038 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-12-13 18:29:23,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:29:23 BoogieIcfgContainer [2022-12-13 18:29:23,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:29:23,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:29:23,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:29:23,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:29:23,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:29:21" (1/3) ... [2022-12-13 18:29:23,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f547b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:29:23, skipping insertion in model container [2022-12-13 18:29:23,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:22" (2/3) ... [2022-12-13 18:29:23,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f547b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:29:23, skipping insertion in model container [2022-12-13 18:29:23,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:29:23" (3/3) ... [2022-12-13 18:29:23,047 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.05.cil-2.c [2022-12-13 18:29:23,062 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:29:23,062 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 18:29:23,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:29:23,109 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;@391ca3de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:29:23,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 18:29:23,114 INFO L276 IsEmpty]: Start isEmpty. Operand has 316 states, 263 states have (on average 1.6045627376425855) internal successors, (422), 271 states have internal predecessors, (422), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2022-12-13 18:29:23,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 18:29:23,122 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:23,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:23,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:23,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:23,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1403612633, now seen corresponding path program 1 times [2022-12-13 18:29:23,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:23,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827052768] [2022-12-13 18:29:23,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:23,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:29:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:29:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,364 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 18:29:23,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:23,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827052768] [2022-12-13 18:29:23,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827052768] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:23,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:23,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:29:23,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979297287] [2022-12-13 18:29:23,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:23,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:29:23,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:23,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:29:23,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:29:23,395 INFO L87 Difference]: Start difference. First operand has 316 states, 263 states have (on average 1.6045627376425855) internal successors, (422), 271 states have internal predecessors, (422), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:29:24,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:24,007 INFO L93 Difference]: Finished difference Result 628 states and 977 transitions. [2022-12-13 18:29:24,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:29:24,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-12-13 18:29:24,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:24,018 INFO L225 Difference]: With dead ends: 628 [2022-12-13 18:29:24,018 INFO L226 Difference]: Without dead ends: 323 [2022-12-13 18:29:24,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:29:24,024 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 478 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:24,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1073 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:29:24,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-12-13 18:29:24,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 305. [2022-12-13 18:29:24,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 255 states have (on average 1.5098039215686274) internal successors, (385), 260 states have internal predecessors, (385), 35 states have call successors, (35), 15 states have call predecessors, (35), 13 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-12-13 18:29:24,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 451 transitions. [2022-12-13 18:29:24,084 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 451 transitions. Word has length 65 [2022-12-13 18:29:24,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:24,085 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 451 transitions. [2022-12-13 18:29:24,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:29:24,085 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 451 transitions. [2022-12-13 18:29:24,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 18:29:24,087 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:24,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:24,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:29:24,088 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:24,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash 16827223, now seen corresponding path program 1 times [2022-12-13 18:29:24,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:24,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091713889] [2022-12-13 18:29:24,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:24,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:29:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:29:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:29:24,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:24,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091713889] [2022-12-13 18:29:24,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091713889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:24,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:24,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:29:24,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513186133] [2022-12-13 18:29:24,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:24,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:29:24,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:24,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:29:24,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:29:24,245 INFO L87 Difference]: Start difference. First operand 305 states and 451 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:29:24,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:24,964 INFO L93 Difference]: Finished difference Result 528 states and 765 transitions. [2022-12-13 18:29:24,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:29:24,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-12-13 18:29:24,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:24,968 INFO L225 Difference]: With dead ends: 528 [2022-12-13 18:29:24,968 INFO L226 Difference]: Without dead ends: 440 [2022-12-13 18:29:24,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:29:24,969 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 582 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:24,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1521 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 18:29:24,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-12-13 18:29:24,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 401. [2022-12-13 18:29:24,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 331 states have (on average 1.4773413897280967) internal successors, (489), 338 states have internal predecessors, (489), 46 states have call successors, (46), 22 states have call predecessors, (46), 22 states have return successors, (47), 43 states have call predecessors, (47), 42 states have call successors, (47) [2022-12-13 18:29:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 582 transitions. [2022-12-13 18:29:24,999 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 582 transitions. Word has length 65 [2022-12-13 18:29:25,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:25,000 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 582 transitions. [2022-12-13 18:29:25,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:29:25,000 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 582 transitions. [2022-12-13 18:29:25,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 18:29:25,004 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:25,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:25,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:29:25,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:25,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:25,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1695715863, now seen corresponding path program 1 times [2022-12-13 18:29:25,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:25,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854420780] [2022-12-13 18:29:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:25,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:25,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:25,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:29:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:25,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:25,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:29:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:25,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:25,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:25,145 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 18:29:25,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:25,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854420780] [2022-12-13 18:29:25,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854420780] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:25,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:25,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:29:25,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256076334] [2022-12-13 18:29:25,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:25,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:29:25,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:25,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:29:25,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:29:25,148 INFO L87 Difference]: Start difference. First operand 401 states and 582 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:29:26,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:26,019 INFO L93 Difference]: Finished difference Result 748 states and 1058 transitions. [2022-12-13 18:29:26,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:29:26,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-12-13 18:29:26,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:26,024 INFO L225 Difference]: With dead ends: 748 [2022-12-13 18:29:26,024 INFO L226 Difference]: Without dead ends: 571 [2022-12-13 18:29:26,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-12-13 18:29:26,026 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 871 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:26,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 1602 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:29:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-12-13 18:29:26,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 497. [2022-12-13 18:29:26,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 407 states have (on average 1.4545454545454546) internal successors, (592), 416 states have internal predecessors, (592), 57 states have call successors, (57), 29 states have call predecessors, (57), 31 states have return successors, (66), 55 states have call predecessors, (66), 53 states have call successors, (66) [2022-12-13 18:29:26,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 715 transitions. [2022-12-13 18:29:26,070 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 715 transitions. Word has length 65 [2022-12-13 18:29:26,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:26,070 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 715 transitions. [2022-12-13 18:29:26,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:29:26,070 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 715 transitions. [2022-12-13 18:29:26,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 18:29:26,073 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:26,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:26,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:29:26,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:26,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:26,074 INFO L85 PathProgramCache]: Analyzing trace with hash -332870247, now seen corresponding path program 1 times [2022-12-13 18:29:26,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:26,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416349038] [2022-12-13 18:29:26,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:26,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:26,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:26,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:26,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:29:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:26,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:26,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:29:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:26,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:26,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:26,218 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 18:29:26,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:26,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416349038] [2022-12-13 18:29:26,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416349038] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:26,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:26,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 18:29:26,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292497155] [2022-12-13 18:29:26,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:26,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:29:26,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:26,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:29:26,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:29:26,221 INFO L87 Difference]: Start difference. First operand 497 states and 715 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 18:29:26,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:26,976 INFO L93 Difference]: Finished difference Result 798 states and 1129 transitions. [2022-12-13 18:29:26,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 18:29:26,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-12-13 18:29:26,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:26,982 INFO L225 Difference]: With dead ends: 798 [2022-12-13 18:29:26,982 INFO L226 Difference]: Without dead ends: 531 [2022-12-13 18:29:26,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:29:26,984 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 378 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:26,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 1815 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 18:29:26,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-12-13 18:29:27,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 502. [2022-12-13 18:29:27,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 411 states have (on average 1.4452554744525548) internal successors, (594), 420 states have internal predecessors, (594), 57 states have call successors, (57), 29 states have call predecessors, (57), 32 states have return successors, (67), 56 states have call predecessors, (67), 53 states have call successors, (67) [2022-12-13 18:29:27,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 718 transitions. [2022-12-13 18:29:27,008 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 718 transitions. Word has length 65 [2022-12-13 18:29:27,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:27,008 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 718 transitions. [2022-12-13 18:29:27,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 18:29:27,008 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 718 transitions. [2022-12-13 18:29:27,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 18:29:27,009 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:27,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:27,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:29:27,010 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:27,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:27,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1362229545, now seen corresponding path program 1 times [2022-12-13 18:29:27,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:27,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130142189] [2022-12-13 18:29:27,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:27,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:27,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:27,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:27,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:29:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:27,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:27,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:29:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:27,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:27,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:27,116 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 18:29:27,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:27,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130142189] [2022-12-13 18:29:27,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130142189] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:27,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:27,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 18:29:27,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301861623] [2022-12-13 18:29:27,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:27,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:29:27,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:27,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:29:27,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:29:27,118 INFO L87 Difference]: Start difference. First operand 502 states and 718 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 18:29:27,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:27,763 INFO L93 Difference]: Finished difference Result 820 states and 1151 transitions. [2022-12-13 18:29:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:29:27,763 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-12-13 18:29:27,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:27,766 INFO L225 Difference]: With dead ends: 820 [2022-12-13 18:29:27,766 INFO L226 Difference]: Without dead ends: 548 [2022-12-13 18:29:27,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:29:27,768 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 561 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:27,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 1613 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:29:27,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-12-13 18:29:27,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 517. [2022-12-13 18:29:27,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 423 states have (on average 1.4326241134751774) internal successors, (606), 432 states have internal predecessors, (606), 57 states have call successors, (57), 29 states have call predecessors, (57), 35 states have return successors, (70), 59 states have call predecessors, (70), 53 states have call successors, (70) [2022-12-13 18:29:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 733 transitions. [2022-12-13 18:29:27,804 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 733 transitions. Word has length 65 [2022-12-13 18:29:27,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:27,804 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 733 transitions. [2022-12-13 18:29:27,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 18:29:27,805 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 733 transitions. [2022-12-13 18:29:27,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 18:29:27,806 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:27,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:27,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:29:27,806 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:27,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:27,807 INFO L85 PathProgramCache]: Analyzing trace with hash 23973849, now seen corresponding path program 1 times [2022-12-13 18:29:27,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:27,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141917973] [2022-12-13 18:29:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:27,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:27,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:27,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:27,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:29:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:27,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:27,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:29:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:27,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:27,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:27,949 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 18:29:27,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:27,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141917973] [2022-12-13 18:29:27,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141917973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:27,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:27,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:29:27,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983619736] [2022-12-13 18:29:27,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:27,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:29:27,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:27,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:29:27,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:29:27,951 INFO L87 Difference]: Start difference. First operand 517 states and 733 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:29:28,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:28,688 INFO L93 Difference]: Finished difference Result 909 states and 1244 transitions. [2022-12-13 18:29:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:29:28,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-12-13 18:29:28,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:28,692 INFO L225 Difference]: With dead ends: 909 [2022-12-13 18:29:28,692 INFO L226 Difference]: Without dead ends: 624 [2022-12-13 18:29:28,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-12-13 18:29:28,693 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 887 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:28,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 1377 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 18:29:28,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-12-13 18:29:28,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 529. [2022-12-13 18:29:28,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 433 states have (on average 1.4226327944572748) internal successors, (616), 442 states have internal predecessors, (616), 58 states have call successors, (58), 30 states have call predecessors, (58), 36 states have return successors, (69), 60 states have call predecessors, (69), 54 states have call successors, (69) [2022-12-13 18:29:28,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 743 transitions. [2022-12-13 18:29:28,716 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 743 transitions. Word has length 65 [2022-12-13 18:29:28,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:28,717 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 743 transitions. [2022-12-13 18:29:28,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:29:28,717 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 743 transitions. [2022-12-13 18:29:28,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 18:29:28,718 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:28,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:28,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:29:28,718 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:28,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:28,718 INFO L85 PathProgramCache]: Analyzing trace with hash -110039657, now seen corresponding path program 1 times [2022-12-13 18:29:28,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:28,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417270882] [2022-12-13 18:29:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:28,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:28,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:28,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:28,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:29:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:28,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:28,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:29:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:28,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:28,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:28,785 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 18:29:28,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:28,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417270882] [2022-12-13 18:29:28,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417270882] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:28,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:28,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:29:28,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556367642] [2022-12-13 18:29:28,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:28,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:29:28,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:28,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:29:28,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:29:28,787 INFO L87 Difference]: Start difference. First operand 529 states and 743 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:29:29,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:29,226 INFO L93 Difference]: Finished difference Result 1171 states and 1587 transitions. [2022-12-13 18:29:29,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:29:29,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-12-13 18:29:29,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:29,230 INFO L225 Difference]: With dead ends: 1171 [2022-12-13 18:29:29,231 INFO L226 Difference]: Without dead ends: 875 [2022-12-13 18:29:29,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:29:29,232 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1081 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:29,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 913 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:29:29,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-12-13 18:29:29,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 819. [2022-12-13 18:29:29,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 657 states have (on average 1.36986301369863) internal successors, (900), 673 states have internal predecessors, (900), 93 states have call successors, (93), 52 states have call predecessors, (93), 67 states have return successors, (126), 100 states have call predecessors, (126), 89 states have call successors, (126) [2022-12-13 18:29:29,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1119 transitions. [2022-12-13 18:29:29,283 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1119 transitions. Word has length 65 [2022-12-13 18:29:29,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:29,283 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1119 transitions. [2022-12-13 18:29:29,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:29:29,283 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1119 transitions. [2022-12-13 18:29:29,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 18:29:29,285 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:29,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:29,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:29:29,285 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:29,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:29,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1566755896, now seen corresponding path program 1 times [2022-12-13 18:29:29,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:29,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805681397] [2022-12-13 18:29:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:29,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:29,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:29,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:29,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:29:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:29,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:29,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:29:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:29,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:29,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:29,339 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 18:29:29,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:29,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805681397] [2022-12-13 18:29:29,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805681397] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:29,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:29,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:29:29,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712724031] [2022-12-13 18:29:29,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:29,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:29:29,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:29,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:29:29,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:29:29,341 INFO L87 Difference]: Start difference. First operand 819 states and 1119 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 18:29:29,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:29,826 INFO L93 Difference]: Finished difference Result 2022 states and 2686 transitions. [2022-12-13 18:29:29,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:29:29,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-12-13 18:29:29,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:29,830 INFO L225 Difference]: With dead ends: 2022 [2022-12-13 18:29:29,830 INFO L226 Difference]: Without dead ends: 1415 [2022-12-13 18:29:29,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:29:29,832 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 562 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:29,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 1076 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:29:29,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2022-12-13 18:29:29,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1300. [2022-12-13 18:29:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1036 states have (on average 1.334942084942085) internal successors, (1383), 1055 states have internal predecessors, (1383), 138 states have call successors, (138), 96 states have call predecessors, (138), 124 states have return successors, (198), 155 states have call predecessors, (198), 134 states have call successors, (198) [2022-12-13 18:29:29,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1719 transitions. [2022-12-13 18:29:29,885 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1719 transitions. Word has length 66 [2022-12-13 18:29:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:29,886 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 1719 transitions. [2022-12-13 18:29:29,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 18:29:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1719 transitions. [2022-12-13 18:29:29,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 18:29:29,887 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:29,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:29,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:29:29,887 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:29,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:29,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1269971741, now seen corresponding path program 1 times [2022-12-13 18:29:29,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:29,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031990474] [2022-12-13 18:29:29,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:29,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:29,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:29,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:29,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:29:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:29,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:29,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:29:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:29,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:29,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:29,941 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 18:29:29,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:29,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031990474] [2022-12-13 18:29:29,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031990474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:29,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:29,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:29:29,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313171445] [2022-12-13 18:29:29,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:29,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:29:29,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:29,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:29:29,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:29:29,943 INFO L87 Difference]: Start difference. First operand 1300 states and 1719 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 18:29:30,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:30,481 INFO L93 Difference]: Finished difference Result 3488 states and 4525 transitions. [2022-12-13 18:29:30,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 18:29:30,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-12-13 18:29:30,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:30,491 INFO L225 Difference]: With dead ends: 3488 [2022-12-13 18:29:30,491 INFO L226 Difference]: Without dead ends: 2420 [2022-12-13 18:29:30,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:29:30,493 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1081 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:30,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 715 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:29:30,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2022-12-13 18:29:30,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2162. [2022-12-13 18:29:30,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 1702 states have (on average 1.298472385428907) internal successors, (2210), 1731 states have internal predecessors, (2210), 236 states have call successors, (236), 180 states have call predecessors, (236), 222 states have return successors, (334), 257 states have call predecessors, (334), 232 states have call successors, (334) [2022-12-13 18:29:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 2780 transitions. [2022-12-13 18:29:30,594 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 2780 transitions. Word has length 66 [2022-12-13 18:29:30,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:30,594 INFO L495 AbstractCegarLoop]: Abstraction has 2162 states and 2780 transitions. [2022-12-13 18:29:30,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 18:29:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 2780 transitions. [2022-12-13 18:29:30,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-13 18:29:30,596 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:30,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:30,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:29:30,596 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:30,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:30,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1499029609, now seen corresponding path program 1 times [2022-12-13 18:29:30,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:30,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536886798] [2022-12-13 18:29:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:30,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:30,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:30,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:30,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:29:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:30,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:30,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:29:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:30,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:30,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:30,653 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 18:29:30,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:30,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536886798] [2022-12-13 18:29:30,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536886798] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:30,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:30,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:29:30,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317793059] [2022-12-13 18:29:30,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:30,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:29:30,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:30,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:29:30,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:29:30,655 INFO L87 Difference]: Start difference. First operand 2162 states and 2780 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 18:29:31,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:31,256 INFO L93 Difference]: Finished difference Result 5072 states and 6430 transitions. [2022-12-13 18:29:31,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:29:31,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-12-13 18:29:31,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:31,268 INFO L225 Difference]: With dead ends: 5072 [2022-12-13 18:29:31,268 INFO L226 Difference]: Without dead ends: 3142 [2022-12-13 18:29:31,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:29:31,271 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 1062 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:31,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 750 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:29:31,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3142 states. [2022-12-13 18:29:31,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3142 to 2894. [2022-12-13 18:29:31,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2894 states, 2270 states have (on average 1.2837004405286343) internal successors, (2914), 2307 states have internal predecessors, (2914), 316 states have call successors, (316), 250 states have call predecessors, (316), 306 states have return successors, (443), 343 states have call predecessors, (443), 312 states have call successors, (443) [2022-12-13 18:29:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2894 states to 2894 states and 3673 transitions. [2022-12-13 18:29:31,413 INFO L78 Accepts]: Start accepts. Automaton has 2894 states and 3673 transitions. Word has length 72 [2022-12-13 18:29:31,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:31,413 INFO L495 AbstractCegarLoop]: Abstraction has 2894 states and 3673 transitions. [2022-12-13 18:29:31,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 18:29:31,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2894 states and 3673 transitions. [2022-12-13 18:29:31,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 18:29:31,414 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:31,414 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:31,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:29:31,415 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:31,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:31,415 INFO L85 PathProgramCache]: Analyzing trace with hash 258278453, now seen corresponding path program 1 times [2022-12-13 18:29:31,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:31,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422403281] [2022-12-13 18:29:31,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:31,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:31,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:29:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:31,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:31,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:29:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:29:31,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:31,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422403281] [2022-12-13 18:29:31,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422403281] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:31,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:31,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:29:31,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539289834] [2022-12-13 18:29:31,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:31,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:29:31,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:31,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:29:31,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:29:31,480 INFO L87 Difference]: Start difference. First operand 2894 states and 3673 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-13 18:29:32,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:32,032 INFO L93 Difference]: Finished difference Result 3668 states and 4604 transitions. [2022-12-13 18:29:32,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 18:29:32,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-12-13 18:29:32,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:32,046 INFO L225 Difference]: With dead ends: 3668 [2022-12-13 18:29:32,046 INFO L226 Difference]: Without dead ends: 3665 [2022-12-13 18:29:32,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:29:32,048 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1513 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:32,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 726 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:29:32,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2022-12-13 18:29:32,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 3388. [2022-12-13 18:29:32,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 2655 states have (on average 1.2753295668549907) internal successors, (3386), 2697 states have internal predecessors, (3386), 366 states have call successors, (366), 294 states have call predecessors, (366), 365 states have return successors, (522), 403 states have call predecessors, (522), 363 states have call successors, (522) [2022-12-13 18:29:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 4274 transitions. [2022-12-13 18:29:32,217 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 4274 transitions. Word has length 73 [2022-12-13 18:29:32,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:32,218 INFO L495 AbstractCegarLoop]: Abstraction has 3388 states and 4274 transitions. [2022-12-13 18:29:32,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-13 18:29:32,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 4274 transitions. [2022-12-13 18:29:32,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-13 18:29:32,219 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:32,219 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:32,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:29:32,219 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:32,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:32,219 INFO L85 PathProgramCache]: Analyzing trace with hash -584250463, now seen corresponding path program 1 times [2022-12-13 18:29:32,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:32,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171722578] [2022-12-13 18:29:32,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:32,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:32,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:32,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:32,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:29:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:32,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:32,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:29:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:32,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:32,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:29:32,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:32,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171722578] [2022-12-13 18:29:32,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171722578] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:29:32,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151671489] [2022-12-13 18:29:32,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:32,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:32,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:32,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:29:32,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:29:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:32,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 18:29:32,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:29:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:29:32,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:29:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:29:32,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151671489] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:29:32,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:29:32,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-12-13 18:29:32,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653039055] [2022-12-13 18:29:32,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:29:32,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:29:32,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:32,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:29:32,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:29:32,822 INFO L87 Difference]: Start difference. First operand 3388 states and 4274 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 18:29:34,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:34,392 INFO L93 Difference]: Finished difference Result 7829 states and 9760 transitions. [2022-12-13 18:29:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 18:29:34,392 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-12-13 18:29:34,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:34,408 INFO L225 Difference]: With dead ends: 7829 [2022-12-13 18:29:34,408 INFO L226 Difference]: Without dead ends: 7826 [2022-12-13 18:29:34,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-12-13 18:29:34,411 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1294 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:34,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 2043 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 18:29:34,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7826 states. [2022-12-13 18:29:34,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7826 to 5178. [2022-12-13 18:29:34,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5178 states, 4059 states have (on average 1.271741808327174) internal successors, (5162), 4123 states have internal predecessors, (5162), 550 states have call successors, (550), 452 states have call predecessors, (550), 567 states have return successors, (800), 609 states have call predecessors, (800), 547 states have call successors, (800) [2022-12-13 18:29:34,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5178 states to 5178 states and 6512 transitions. [2022-12-13 18:29:34,777 INFO L78 Accepts]: Start accepts. Automaton has 5178 states and 6512 transitions. Word has length 74 [2022-12-13 18:29:34,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:34,777 INFO L495 AbstractCegarLoop]: Abstraction has 5178 states and 6512 transitions. [2022-12-13 18:29:34,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 18:29:34,777 INFO L276 IsEmpty]: Start isEmpty. Operand 5178 states and 6512 transitions. [2022-12-13 18:29:34,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 18:29:34,779 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:34,779 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:34,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:29:34,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:34,980 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:34,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:34,981 INFO L85 PathProgramCache]: Analyzing trace with hash 957331893, now seen corresponding path program 2 times [2022-12-13 18:29:34,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:34,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708535994] [2022-12-13 18:29:34,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:34,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:29:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:29:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:29:35,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:35,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708535994] [2022-12-13 18:29:35,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708535994] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:35,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:35,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:29:35,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225323145] [2022-12-13 18:29:35,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:35,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:29:35,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:35,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:29:35,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:29:35,094 INFO L87 Difference]: Start difference. First operand 5178 states and 6512 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-13 18:29:35,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:35,737 INFO L93 Difference]: Finished difference Result 7860 states and 9885 transitions. [2022-12-13 18:29:35,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:29:35,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-12-13 18:29:35,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:35,746 INFO L225 Difference]: With dead ends: 7860 [2022-12-13 18:29:35,746 INFO L226 Difference]: Without dead ends: 3785 [2022-12-13 18:29:35,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:29:35,752 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 950 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:35,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 811 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:29:35,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3785 states. [2022-12-13 18:29:36,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3785 to 3550. [2022-12-13 18:29:36,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 2787 states have (on average 1.2565482597775386) internal successors, (3502), 2829 states have internal predecessors, (3502), 382 states have call successors, (382), 308 states have call predecessors, (382), 379 states have return successors, (526), 419 states have call predecessors, (526), 379 states have call successors, (526) [2022-12-13 18:29:36,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 4410 transitions. [2022-12-13 18:29:36,028 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 4410 transitions. Word has length 77 [2022-12-13 18:29:36,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:36,029 INFO L495 AbstractCegarLoop]: Abstraction has 3550 states and 4410 transitions. [2022-12-13 18:29:36,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-13 18:29:36,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 4410 transitions. [2022-12-13 18:29:36,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-13 18:29:36,031 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:36,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:36,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:29:36,032 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:36,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:36,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1430467283, now seen corresponding path program 1 times [2022-12-13 18:29:36,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:36,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446598944] [2022-12-13 18:29:36,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:36,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:36,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:36,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:36,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:29:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:36,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:36,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:29:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:36,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:36,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:36,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 18:29:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:36,138 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 18:29:36,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:36,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446598944] [2022-12-13 18:29:36,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446598944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:36,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:36,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:29:36,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301345691] [2022-12-13 18:29:36,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:36,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:29:36,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:36,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:29:36,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:29:36,150 INFO L87 Difference]: Start difference. First operand 3550 states and 4410 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 18:29:37,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:37,223 INFO L93 Difference]: Finished difference Result 10406 states and 12791 transitions. [2022-12-13 18:29:37,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 18:29:37,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-12-13 18:29:37,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:37,239 INFO L225 Difference]: With dead ends: 10406 [2022-12-13 18:29:37,239 INFO L226 Difference]: Without dead ends: 5785 [2022-12-13 18:29:37,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-12-13 18:29:37,247 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1023 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:37,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1428 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 18:29:37,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5785 states. [2022-12-13 18:29:37,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5785 to 5465. [2022-12-13 18:29:37,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5465 states, 4245 states have (on average 1.2318021201413427) internal successors, (5229), 4330 states have internal predecessors, (5229), 586 states have call successors, (586), 482 states have call predecessors, (586), 632 states have return successors, (908), 659 states have call predecessors, (908), 583 states have call successors, (908) [2022-12-13 18:29:37,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5465 states to 5465 states and 6723 transitions. [2022-12-13 18:29:37,600 INFO L78 Accepts]: Start accepts. Automaton has 5465 states and 6723 transitions. Word has length 84 [2022-12-13 18:29:37,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:37,600 INFO L495 AbstractCegarLoop]: Abstraction has 5465 states and 6723 transitions. [2022-12-13 18:29:37,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 18:29:37,601 INFO L276 IsEmpty]: Start isEmpty. Operand 5465 states and 6723 transitions. [2022-12-13 18:29:37,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 18:29:37,604 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:37,604 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:37,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:29:37,605 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:37,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:37,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1891118771, now seen corresponding path program 1 times [2022-12-13 18:29:37,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:37,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999316336] [2022-12-13 18:29:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:37,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:37,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:37,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:29:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:37,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:29:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:37,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:29:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:37,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:29:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:37,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:29:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:37,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:29:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:29:37,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:37,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999316336] [2022-12-13 18:29:37,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999316336] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:37,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:37,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 18:29:37,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835029120] [2022-12-13 18:29:37,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:37,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:29:37,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:37,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:29:37,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:29:37,720 INFO L87 Difference]: Start difference. First operand 5465 states and 6723 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 18:29:38,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:38,872 INFO L93 Difference]: Finished difference Result 9468 states and 11563 transitions. [2022-12-13 18:29:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 18:29:38,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-12-13 18:29:38,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:38,884 INFO L225 Difference]: With dead ends: 9468 [2022-12-13 18:29:38,884 INFO L226 Difference]: Without dead ends: 4875 [2022-12-13 18:29:38,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-12-13 18:29:38,891 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1462 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:38,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 1702 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:29:38,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2022-12-13 18:29:39,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 4541. [2022-12-13 18:29:39,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 3534 states have (on average 1.2246745897000566) internal successors, (4328), 3601 states have internal predecessors, (4328), 487 states have call successors, (487), 397 states have call predecessors, (487), 518 states have return successors, (686), 549 states have call predecessors, (686), 484 states have call successors, (686) [2022-12-13 18:29:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 5501 transitions. [2022-12-13 18:29:39,177 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 5501 transitions. Word has length 93 [2022-12-13 18:29:39,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:39,177 INFO L495 AbstractCegarLoop]: Abstraction has 4541 states and 5501 transitions. [2022-12-13 18:29:39,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 18:29:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 5501 transitions. [2022-12-13 18:29:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:29:39,181 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:39,181 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] [2022-12-13 18:29:39,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 18:29:39,181 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:39,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:39,181 INFO L85 PathProgramCache]: Analyzing trace with hash 299410466, now seen corresponding path program 1 times [2022-12-13 18:29:39,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:39,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762488082] [2022-12-13 18:29:39,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:39,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:39,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:39,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:29:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:39,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:29:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:39,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:29:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:29:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:39,261 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 18:29:39,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:39,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762488082] [2022-12-13 18:29:39,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762488082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:39,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:39,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:29:39,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127982150] [2022-12-13 18:29:39,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:39,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:29:39,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:39,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:29:39,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:29:39,264 INFO L87 Difference]: Start difference. First operand 4541 states and 5501 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 18:29:40,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:40,257 INFO L93 Difference]: Finished difference Result 4805 states and 5917 transitions. [2022-12-13 18:29:40,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:29:40,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 102 [2022-12-13 18:29:40,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:40,265 INFO L225 Difference]: With dead ends: 4805 [2022-12-13 18:29:40,265 INFO L226 Difference]: Without dead ends: 4606 [2022-12-13 18:29:40,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:29:40,266 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 621 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:40,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 669 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:29:40,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2022-12-13 18:29:40,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 4541. [2022-12-13 18:29:40,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 3534 states have (on average 1.2243916242218449) internal successors, (4327), 3601 states have internal predecessors, (4327), 487 states have call successors, (487), 397 states have call predecessors, (487), 518 states have return successors, (686), 549 states have call predecessors, (686), 484 states have call successors, (686) [2022-12-13 18:29:40,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 5500 transitions. [2022-12-13 18:29:40,644 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 5500 transitions. Word has length 102 [2022-12-13 18:29:40,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:40,644 INFO L495 AbstractCegarLoop]: Abstraction has 4541 states and 5500 transitions. [2022-12-13 18:29:40,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 18:29:40,644 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 5500 transitions. [2022-12-13 18:29:40,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:29:40,646 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:40,646 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] [2022-12-13 18:29:40,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 18:29:40,647 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:40,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:40,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1577652764, now seen corresponding path program 1 times [2022-12-13 18:29:40,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:40,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436330866] [2022-12-13 18:29:40,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:40,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:40,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:40,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:29:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:40,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:29:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:40,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:29:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:40,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:29:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:40,728 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 18:29:40,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:40,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436330866] [2022-12-13 18:29:40,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436330866] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:40,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:40,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:29:40,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315276584] [2022-12-13 18:29:40,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:40,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:29:40,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:40,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:29:40,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:29:40,729 INFO L87 Difference]: Start difference. First operand 4541 states and 5500 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 18:29:42,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:42,412 INFO L93 Difference]: Finished difference Result 5067 states and 6331 transitions. [2022-12-13 18:29:42,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:29:42,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 102 [2022-12-13 18:29:42,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:42,420 INFO L225 Difference]: With dead ends: 5067 [2022-12-13 18:29:42,420 INFO L226 Difference]: Without dead ends: 4871 [2022-12-13 18:29:42,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:29:42,422 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1000 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:42,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 969 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 18:29:42,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2022-12-13 18:29:42,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4740. [2022-12-13 18:29:42,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4740 states, 3712 states have (on average 1.2408405172413792) internal successors, (4606), 3780 states have internal predecessors, (4606), 501 states have call successors, (501), 403 states have call predecessors, (501), 525 states have return successors, (703), 563 states have call predecessors, (703), 498 states have call successors, (703) [2022-12-13 18:29:42,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 5810 transitions. [2022-12-13 18:29:42,831 INFO L78 Accepts]: Start accepts. Automaton has 4740 states and 5810 transitions. Word has length 102 [2022-12-13 18:29:42,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:42,831 INFO L495 AbstractCegarLoop]: Abstraction has 4740 states and 5810 transitions. [2022-12-13 18:29:42,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 18:29:42,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4740 states and 5810 transitions. [2022-12-13 18:29:42,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:29:42,833 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:42,834 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] [2022-12-13 18:29:42,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 18:29:42,834 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:42,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:42,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1033499360, now seen corresponding path program 1 times [2022-12-13 18:29:42,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:42,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486657279] [2022-12-13 18:29:42,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:42,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:42,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:29:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:42,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:29:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:42,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:29:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:42,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:29:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:42,924 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 18:29:42,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:42,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486657279] [2022-12-13 18:29:42,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486657279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:42,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:42,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:29:42,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78062376] [2022-12-13 18:29:42,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:42,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:29:42,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:42,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:29:42,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:29:42,925 INFO L87 Difference]: Start difference. First operand 4740 states and 5810 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:29:44,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:44,830 INFO L93 Difference]: Finished difference Result 5537 states and 7068 transitions. [2022-12-13 18:29:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:29:44,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-12-13 18:29:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:44,840 INFO L225 Difference]: With dead ends: 5537 [2022-12-13 18:29:44,840 INFO L226 Difference]: Without dead ends: 5142 [2022-12-13 18:29:44,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:29:44,843 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 1012 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 1977 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 2065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:44,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 1656 Invalid, 2065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1977 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 18:29:44,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5142 states. [2022-12-13 18:29:45,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5142 to 4927. [2022-12-13 18:29:45,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4927 states, 3878 states have (on average 1.2534811758638473) internal successors, (4861), 3947 states have internal predecessors, (4861), 515 states have call successors, (515), 409 states have call predecessors, (515), 532 states have return successors, (719), 578 states have call predecessors, (719), 512 states have call successors, (719) [2022-12-13 18:29:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4927 states to 4927 states and 6095 transitions. [2022-12-13 18:29:45,274 INFO L78 Accepts]: Start accepts. Automaton has 4927 states and 6095 transitions. Word has length 102 [2022-12-13 18:29:45,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:45,275 INFO L495 AbstractCegarLoop]: Abstraction has 4927 states and 6095 transitions. [2022-12-13 18:29:45,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:29:45,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4927 states and 6095 transitions. [2022-12-13 18:29:45,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:29:45,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:45,277 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] [2022-12-13 18:29:45,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 18:29:45,277 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:45,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:45,278 INFO L85 PathProgramCache]: Analyzing trace with hash -845631586, now seen corresponding path program 1 times [2022-12-13 18:29:45,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:45,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732427548] [2022-12-13 18:29:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:45,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:45,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:45,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:29:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:45,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:29:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:45,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:29:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:45,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:29:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:45,375 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 18:29:45,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:45,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732427548] [2022-12-13 18:29:45,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732427548] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:45,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:45,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:29:45,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91035259] [2022-12-13 18:29:45,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:45,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:29:45,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:45,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:29:45,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:29:45,377 INFO L87 Difference]: Start difference. First operand 4927 states and 6095 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:29:47,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:47,428 INFO L93 Difference]: Finished difference Result 6227 states and 8141 transitions. [2022-12-13 18:29:47,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:29:47,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-12-13 18:29:47,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:47,439 INFO L225 Difference]: With dead ends: 6227 [2022-12-13 18:29:47,439 INFO L226 Difference]: Without dead ends: 5645 [2022-12-13 18:29:47,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:29:47,442 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 1006 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:47,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 1654 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 18:29:47,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5645 states. [2022-12-13 18:29:48,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5645 to 5304. [2022-12-13 18:29:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5304 states, 4213 states have (on average 1.2760503204367435) internal successors, (5376), 4284 states have internal predecessors, (5376), 543 states have call successors, (543), 421 states have call predecessors, (543), 546 states have return successors, (755), 608 states have call predecessors, (755), 540 states have call successors, (755) [2022-12-13 18:29:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 6674 transitions. [2022-12-13 18:29:48,035 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 6674 transitions. Word has length 102 [2022-12-13 18:29:48,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:48,036 INFO L495 AbstractCegarLoop]: Abstraction has 5304 states and 6674 transitions. [2022-12-13 18:29:48,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:29:48,036 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 6674 transitions. [2022-12-13 18:29:48,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:29:48,038 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:48,038 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] [2022-12-13 18:29:48,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 18:29:48,038 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:48,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:48,039 INFO L85 PathProgramCache]: Analyzing trace with hash 479224608, now seen corresponding path program 1 times [2022-12-13 18:29:48,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:48,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842071207] [2022-12-13 18:29:48,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:48,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:48,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:48,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:29:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:48,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:29:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:48,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:29:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:48,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:29:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:48,136 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 18:29:48,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:48,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842071207] [2022-12-13 18:29:48,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842071207] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:48,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:48,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:29:48,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135833442] [2022-12-13 18:29:48,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:48,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:29:48,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:48,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:29:48,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:29:48,138 INFO L87 Difference]: Start difference. First operand 5304 states and 6674 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:29:50,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:50,243 INFO L93 Difference]: Finished difference Result 7566 states and 10220 transitions. [2022-12-13 18:29:50,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:29:50,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-12-13 18:29:50,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:50,253 INFO L225 Difference]: With dead ends: 7566 [2022-12-13 18:29:50,254 INFO L226 Difference]: Without dead ends: 6607 [2022-12-13 18:29:50,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:29:50,257 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 1005 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:50,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 1654 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 18:29:50,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6607 states. [2022-12-13 18:29:50,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6607 to 6061. [2022-12-13 18:29:50,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6061 states, 4886 states have (on average 1.3119115841178879) internal successors, (6410), 4961 states have internal predecessors, (6410), 599 states have call successors, (599), 445 states have call predecessors, (599), 574 states have return successors, (833), 668 states have call predecessors, (833), 596 states have call successors, (833) [2022-12-13 18:29:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6061 states to 6061 states and 7842 transitions. [2022-12-13 18:29:50,786 INFO L78 Accepts]: Start accepts. Automaton has 6061 states and 7842 transitions. Word has length 102 [2022-12-13 18:29:50,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:50,787 INFO L495 AbstractCegarLoop]: Abstraction has 6061 states and 7842 transitions. [2022-12-13 18:29:50,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:29:50,787 INFO L276 IsEmpty]: Start isEmpty. Operand 6061 states and 7842 transitions. [2022-12-13 18:29:50,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:29:50,789 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:50,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:29:50,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 18:29:50,790 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:50,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:50,790 INFO L85 PathProgramCache]: Analyzing trace with hash 2045982558, now seen corresponding path program 1 times [2022-12-13 18:29:50,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:50,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487810724] [2022-12-13 18:29:50,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:50,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:50,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:50,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:29:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:50,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:29:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:50,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:29:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:50,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:29:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:50,900 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 18:29:50,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:50,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487810724] [2022-12-13 18:29:50,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487810724] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:50,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:50,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:29:50,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88885423] [2022-12-13 18:29:50,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:50,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:29:50,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:50,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:29:50,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:29:50,902 INFO L87 Difference]: Start difference. First operand 6061 states and 7842 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:29:53,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:53,098 INFO L93 Difference]: Finished difference Result 10245 states and 14398 transitions. [2022-12-13 18:29:53,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:29:53,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-12-13 18:29:53,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:53,114 INFO L225 Difference]: With dead ends: 10245 [2022-12-13 18:29:53,114 INFO L226 Difference]: Without dead ends: 8529 [2022-12-13 18:29:53,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:29:53,118 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 1004 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:53,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1654 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 18:29:53,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8529 states. [2022-12-13 18:29:53,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8529 to 7582. [2022-12-13 18:29:53,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7582 states, 6239 states have (on average 1.36047443500561) internal successors, (8488), 6322 states have internal predecessors, (8488), 711 states have call successors, (711), 493 states have call predecessors, (711), 630 states have return successors, (1007), 788 states have call predecessors, (1007), 708 states have call successors, (1007) [2022-12-13 18:29:53,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7582 states to 7582 states and 10206 transitions. [2022-12-13 18:29:53,876 INFO L78 Accepts]: Start accepts. Automaton has 7582 states and 10206 transitions. Word has length 102 [2022-12-13 18:29:53,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:53,876 INFO L495 AbstractCegarLoop]: Abstraction has 7582 states and 10206 transitions. [2022-12-13 18:29:53,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:29:53,876 INFO L276 IsEmpty]: Start isEmpty. Operand 7582 states and 10206 transitions. [2022-12-13 18:29:53,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:29:53,879 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:53,879 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] [2022-12-13 18:29:53,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 18:29:53,879 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:53,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:53,879 INFO L85 PathProgramCache]: Analyzing trace with hash 988144480, now seen corresponding path program 1 times [2022-12-13 18:29:53,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:53,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630825393] [2022-12-13 18:29:53,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:53,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:53,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:29:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:29:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:53,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:29:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:53,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:29:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:53,974 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 18:29:53,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:53,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630825393] [2022-12-13 18:29:53,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630825393] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:53,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:53,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:29:53,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499226223] [2022-12-13 18:29:53,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:53,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:29:53,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:53,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:29:53,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:29:53,975 INFO L87 Difference]: Start difference. First operand 7582 states and 10206 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:29:56,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:56,824 INFO L93 Difference]: Finished difference Result 16868 states and 24706 transitions. [2022-12-13 18:29:56,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 18:29:56,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-12-13 18:29:56,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:56,849 INFO L225 Difference]: With dead ends: 16868 [2022-12-13 18:29:56,849 INFO L226 Difference]: Without dead ends: 13631 [2022-12-13 18:29:56,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:29:56,857 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 1056 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:56,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1644 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 18:29:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13631 states. [2022-12-13 18:29:57,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13631 to 10591. [2022-12-13 18:29:57,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10591 states, 8928 states have (on average 1.4150985663082438) internal successors, (12634), 9027 states have internal predecessors, (12634), 919 states have call successors, (919), 589 states have call predecessors, (919), 742 states have return successors, (1393), 1012 states have call predecessors, (1393), 916 states have call successors, (1393) [2022-12-13 18:29:57,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10591 states to 10591 states and 14946 transitions. [2022-12-13 18:29:57,893 INFO L78 Accepts]: Start accepts. Automaton has 10591 states and 14946 transitions. Word has length 102 [2022-12-13 18:29:57,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:57,894 INFO L495 AbstractCegarLoop]: Abstraction has 10591 states and 14946 transitions. [2022-12-13 18:29:57,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:29:57,894 INFO L276 IsEmpty]: Start isEmpty. Operand 10591 states and 14946 transitions. [2022-12-13 18:29:57,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:29:57,897 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:57,898 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] [2022-12-13 18:29:57,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 18:29:57,898 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:57,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:57,898 INFO L85 PathProgramCache]: Analyzing trace with hash -154357986, now seen corresponding path program 1 times [2022-12-13 18:29:57,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:57,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549294280] [2022-12-13 18:29:57,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:57,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:57,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:29:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:57,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:29:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:57,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:29:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:57,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:29:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:57,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:29:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:57,985 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 18:29:57,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:57,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549294280] [2022-12-13 18:29:57,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549294280] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:57,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:57,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:29:57,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915948057] [2022-12-13 18:29:57,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:57,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:29:57,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:57,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:29:57,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:29:57,986 INFO L87 Difference]: Start difference. First operand 10591 states and 14946 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:30:01,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:30:01,771 INFO L93 Difference]: Finished difference Result 28323 states and 42824 transitions. [2022-12-13 18:30:01,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 18:30:01,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-12-13 18:30:01,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:30:01,816 INFO L225 Difference]: With dead ends: 28323 [2022-12-13 18:30:01,816 INFO L226 Difference]: Without dead ends: 22077 [2022-12-13 18:30:01,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:30:01,833 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1175 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:30:01,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 1640 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1899 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 18:30:01,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22077 states. [2022-12-13 18:30:03,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22077 to 16272. [2022-12-13 18:30:03,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16272 states, 13985 states have (on average 1.4561315695387915) internal successors, (20364), 14116 states have internal predecessors, (20364), 1319 states have call successors, (1319), 781 states have call predecessors, (1319), 966 states have return successors, (2311), 1444 states have call predecessors, (2311), 1316 states have call successors, (2311) [2022-12-13 18:30:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16272 states to 16272 states and 23994 transitions. [2022-12-13 18:30:03,341 INFO L78 Accepts]: Start accepts. Automaton has 16272 states and 23994 transitions. Word has length 102 [2022-12-13 18:30:03,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:30:03,341 INFO L495 AbstractCegarLoop]: Abstraction has 16272 states and 23994 transitions. [2022-12-13 18:30:03,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:30:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 16272 states and 23994 transitions. [2022-12-13 18:30:03,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:30:03,347 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:30:03,347 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] [2022-12-13 18:30:03,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 18:30:03,347 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:30:03,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:03,347 INFO L85 PathProgramCache]: Analyzing trace with hash 85881760, now seen corresponding path program 1 times [2022-12-13 18:30:03,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:03,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833055771] [2022-12-13 18:30:03,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:03,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:03,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:30:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:03,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:30:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:03,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:30:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:03,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:30:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:03,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:30:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:03,431 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 18:30:03,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:03,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833055771] [2022-12-13 18:30:03,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833055771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:03,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:30:03,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:30:03,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793789094] [2022-12-13 18:30:03,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:03,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:30:03,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:03,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:30:03,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:30:03,433 INFO L87 Difference]: Start difference. First operand 16272 states and 23994 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:30:09,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:30:09,063 INFO L93 Difference]: Finished difference Result 49682 states and 77006 transitions. [2022-12-13 18:30:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 18:30:09,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-12-13 18:30:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:30:09,166 INFO L225 Difference]: With dead ends: 49682 [2022-12-13 18:30:09,166 INFO L226 Difference]: Without dead ends: 37755 [2022-12-13 18:30:09,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:30:09,197 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 1040 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 2141 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 2233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:30:09,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 1644 Invalid, 2233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2141 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 18:30:09,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37755 states. [2022-12-13 18:30:11,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37755 to 27921. [2022-12-13 18:30:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27921 states, 24418 states have (on average 1.4919321811778197) internal successors, (36430), 24613 states have internal predecessors, (36430), 2087 states have call successors, (2087), 1165 states have call predecessors, (2087), 1414 states have return successors, (4601), 2276 states have call predecessors, (4601), 2084 states have call successors, (4601) [2022-12-13 18:30:12,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27921 states to 27921 states and 43118 transitions. [2022-12-13 18:30:12,056 INFO L78 Accepts]: Start accepts. Automaton has 27921 states and 43118 transitions. Word has length 102 [2022-12-13 18:30:12,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:30:12,057 INFO L495 AbstractCegarLoop]: Abstraction has 27921 states and 43118 transitions. [2022-12-13 18:30:12,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:30:12,057 INFO L276 IsEmpty]: Start isEmpty. Operand 27921 states and 43118 transitions. [2022-12-13 18:30:12,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:30:12,068 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:30:12,068 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] [2022-12-13 18:30:12,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 18:30:12,068 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:30:12,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:12,068 INFO L85 PathProgramCache]: Analyzing trace with hash 924915422, now seen corresponding path program 1 times [2022-12-13 18:30:12,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:12,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358879683] [2022-12-13 18:30:12,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:12,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:12,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:30:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:12,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:30:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:12,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:30:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:30:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:12,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:30:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:12,162 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 18:30:12,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:12,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358879683] [2022-12-13 18:30:12,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358879683] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:12,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:30:12,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:30:12,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378305554] [2022-12-13 18:30:12,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:12,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:30:12,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:12,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:30:12,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:30:12,164 INFO L87 Difference]: Start difference. First operand 27921 states and 43118 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:30:21,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:30:21,157 INFO L93 Difference]: Finished difference Result 90191 states and 144272 transitions. [2022-12-13 18:30:21,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 18:30:21,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-12-13 18:30:21,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:30:21,343 INFO L225 Difference]: With dead ends: 90191 [2022-12-13 18:30:21,344 INFO L226 Difference]: Without dead ends: 66615 [2022-12-13 18:30:21,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:30:21,409 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 1059 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:30:21,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1644 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 18:30:21,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66615 states. [2022-12-13 18:30:26,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66615 to 51283. [2022-12-13 18:30:26,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51283 states, 45412 states have (on average 1.5168237470272175) internal successors, (68882), 45735 states have internal predecessors, (68882), 3559 states have call successors, (3559), 1933 states have call predecessors, (3559), 2310 states have return successors, (10575), 3876 states have call predecessors, (10575), 3556 states have call successors, (10575) [2022-12-13 18:30:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51283 states to 51283 states and 83016 transitions. [2022-12-13 18:30:26,756 INFO L78 Accepts]: Start accepts. Automaton has 51283 states and 83016 transitions. Word has length 102 [2022-12-13 18:30:26,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:30:26,756 INFO L495 AbstractCegarLoop]: Abstraction has 51283 states and 83016 transitions. [2022-12-13 18:30:26,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:30:26,757 INFO L276 IsEmpty]: Start isEmpty. Operand 51283 states and 83016 transitions. [2022-12-13 18:30:26,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:30:26,778 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:30:26,778 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] [2022-12-13 18:30:26,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 18:30:26,778 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:30:26,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:26,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1152421476, now seen corresponding path program 1 times [2022-12-13 18:30:26,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:26,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673584679] [2022-12-13 18:30:26,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:26,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:26,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:30:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:26,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:30:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:26,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:30:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:26,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:30:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:26,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:30:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:26,868 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 18:30:26,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:26,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673584679] [2022-12-13 18:30:26,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673584679] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:26,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:30:26,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:30:26,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516379027] [2022-12-13 18:30:26,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:26,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:30:26,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:26,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:30:26,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:30:26,869 INFO L87 Difference]: Start difference. First operand 51283 states and 83016 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:30:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:30:42,723 INFO L93 Difference]: Finished difference Result 170895 states and 283944 transitions. [2022-12-13 18:30:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 18:30:42,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-12-13 18:30:42,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:30:43,102 INFO L225 Difference]: With dead ends: 170895 [2022-12-13 18:30:43,102 INFO L226 Difference]: Without dead ends: 123957 [2022-12-13 18:30:43,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:30:43,221 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 1001 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 2039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:30:43,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1644 Invalid, 2039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 18:30:43,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123957 states. [2022-12-13 18:30:53,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123957 to 97876. [2022-12-13 18:30:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97876 states, 87397 states have (on average 1.5321807384692838) internal successors, (133908), 87976 states have internal predecessors, (133908), 6375 states have call successors, (6375), 3469 states have call predecessors, (6375), 4102 states have return successors, (26769), 6948 states have call predecessors, (26769), 6372 states have call successors, (26769) [2022-12-13 18:30:53,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97876 states to 97876 states and 167052 transitions. [2022-12-13 18:30:53,399 INFO L78 Accepts]: Start accepts. Automaton has 97876 states and 167052 transitions. Word has length 102 [2022-12-13 18:30:53,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:30:53,399 INFO L495 AbstractCegarLoop]: Abstraction has 97876 states and 167052 transitions. [2022-12-13 18:30:53,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:30:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 97876 states and 167052 transitions. [2022-12-13 18:30:53,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:30:53,529 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:30:53,529 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] [2022-12-13 18:30:53,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 18:30:53,530 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:30:53,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:53,530 INFO L85 PathProgramCache]: Analyzing trace with hash 581682974, now seen corresponding path program 1 times [2022-12-13 18:30:53,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:53,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233218082] [2022-12-13 18:30:53,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:53,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:53,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:30:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:53,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:30:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:53,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:30:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:53,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:30:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:53,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:30:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:53,616 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 18:30:53,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:53,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233218082] [2022-12-13 18:30:53,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233218082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:53,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:30:53,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:30:53,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989261959] [2022-12-13 18:30:53,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:53,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:30:53,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:53,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:30:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:30:53,618 INFO L87 Difference]: Start difference. First operand 97876 states and 167052 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:31:21,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:21,161 INFO L93 Difference]: Finished difference Result 264413 states and 436966 transitions. [2022-12-13 18:31:21,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 18:31:21,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-12-13 18:31:21,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:21,667 INFO L225 Difference]: With dead ends: 264413 [2022-12-13 18:31:21,668 INFO L226 Difference]: Without dead ends: 170883 [2022-12-13 18:31:21,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:31:21,868 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 661 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:31:21,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 1306 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 18:31:21,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170883 states. [2022-12-13 18:31:32,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170883 to 99415. [2022-12-13 18:31:32,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99415 states, 88936 states have (on average 1.5229715750652155) internal successors, (135447), 89515 states have internal predecessors, (135447), 6375 states have call successors, (6375), 3469 states have call predecessors, (6375), 4102 states have return successors, (26769), 6948 states have call predecessors, (26769), 6372 states have call successors, (26769) [2022-12-13 18:31:33,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99415 states to 99415 states and 168591 transitions. [2022-12-13 18:31:33,279 INFO L78 Accepts]: Start accepts. Automaton has 99415 states and 168591 transitions. Word has length 102 [2022-12-13 18:31:33,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:33,279 INFO L495 AbstractCegarLoop]: Abstraction has 99415 states and 168591 transitions. [2022-12-13 18:31:33,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:31:33,279 INFO L276 IsEmpty]: Start isEmpty. Operand 99415 states and 168591 transitions. [2022-12-13 18:31:33,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:31:33,319 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:33,319 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] [2022-12-13 18:31:33,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 18:31:33,319 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:33,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:33,319 INFO L85 PathProgramCache]: Analyzing trace with hash -150284452, now seen corresponding path program 1 times [2022-12-13 18:31:33,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:33,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027857759] [2022-12-13 18:31:33,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:33,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:33,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:31:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:31:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:33,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:31:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:33,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:31:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:33,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:31:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:33,430 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 18:31:33,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:33,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027857759] [2022-12-13 18:31:33,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027857759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:33,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:33,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:31:33,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780613961] [2022-12-13 18:31:33,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:33,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:31:33,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:33,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:31:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:31:33,432 INFO L87 Difference]: Start difference. First operand 99415 states and 168591 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:32:25,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:25,067 INFO L93 Difference]: Finished difference Result 431273 states and 734550 transitions. [2022-12-13 18:32:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 18:32:25,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-12-13 18:32:25,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:32:26,229 INFO L225 Difference]: With dead ends: 431273 [2022-12-13 18:32:26,229 INFO L226 Difference]: Without dead ends: 336204 [2022-12-13 18:32:26,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-12-13 18:32:26,599 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 2154 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 2091 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 2091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:32:26,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2181 Valid, 1417 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 2091 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 18:32:26,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336204 states. [2022-12-13 18:33:00,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336204 to 276971. [2022-12-13 18:33:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276971 states, 247615 states have (on average 1.5206954344446015) internal successors, (376547), 249989 states have internal predecessors, (376547), 18066 states have call successors, (18066), 9631 states have call predecessors, (18066), 11288 states have return successors, (75774), 17868 states have call predecessors, (75774), 18063 states have call successors, (75774) [2022-12-13 18:33:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276971 states to 276971 states and 470387 transitions. [2022-12-13 18:33:01,800 INFO L78 Accepts]: Start accepts. Automaton has 276971 states and 470387 transitions. Word has length 102 [2022-12-13 18:33:01,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:01,800 INFO L495 AbstractCegarLoop]: Abstraction has 276971 states and 470387 transitions. [2022-12-13 18:33:01,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 18:33:01,800 INFO L276 IsEmpty]: Start isEmpty. Operand 276971 states and 470387 transitions. [2022-12-13 18:33:02,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 18:33:02,236 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:02,236 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 18:33:02,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 18:33:02,236 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:02,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:02,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1164817853, now seen corresponding path program 1 times [2022-12-13 18:33:02,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:02,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012328461] [2022-12-13 18:33:02,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:02,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:33:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:33:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:33:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:33:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:33:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:33:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 18:33:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 18:33:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 18:33:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 18:33:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:33:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 18:33:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 18:33:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 18:33:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-13 18:33:02,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:02,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012328461] [2022-12-13 18:33:02,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012328461] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:33:02,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464387025] [2022-12-13 18:33:02,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:02,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:02,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:02,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:02,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:33:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 18:33:02,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 18:33:02,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:33:02,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464387025] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:33:02,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:33:02,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-12-13 18:33:02,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412830291] [2022-12-13 18:33:02,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:33:02,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:33:02,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:02,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:33:02,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:33:02,447 INFO L87 Difference]: Start difference. First operand 276971 states and 470387 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 18:33:34,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:34,652 INFO L93 Difference]: Finished difference Result 279137 states and 473010 transitions. [2022-12-13 18:33:34,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:33:34,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-12-13 18:33:34,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:35,705 INFO L225 Difference]: With dead ends: 279137 [2022-12-13 18:33:35,705 INFO L226 Difference]: Without dead ends: 274832 [2022-12-13 18:33:35,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:33:35,864 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 34 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:35,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2200 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:33:36,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274832 states. [2022-12-13 18:34:10,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274832 to 274707. [2022-12-13 18:34:11,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274707 states, 245928 states have (on average 1.522774958524446) internal successors, (374493), 248251 states have internal predecessors, (374493), 17790 states have call successors, (17790), 9397 states have call predecessors, (17790), 10987 states have return successors, (75381), 17570 states have call predecessors, (75381), 17787 states have call successors, (75381) [2022-12-13 18:34:12,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274707 states to 274707 states and 467664 transitions. [2022-12-13 18:34:12,299 INFO L78 Accepts]: Start accepts. Automaton has 274707 states and 467664 transitions. Word has length 145 [2022-12-13 18:34:12,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:34:12,299 INFO L495 AbstractCegarLoop]: Abstraction has 274707 states and 467664 transitions. [2022-12-13 18:34:12,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 18:34:12,299 INFO L276 IsEmpty]: Start isEmpty. Operand 274707 states and 467664 transitions. [2022-12-13 18:34:12,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 18:34:12,624 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:34:12,624 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:34:12,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:34:12,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 18:34:12,826 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:34:12,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:34:12,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1500672585, now seen corresponding path program 1 times [2022-12-13 18:34:12,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:34:12,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860716407] [2022-12-13 18:34:12,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:12,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:34:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:34:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:34:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:34:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:34:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:34:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:34:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 18:34:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 18:34:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 18:34:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 18:34:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:34:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 18:34:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 18:34:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 18:34:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-12-13 18:34:12,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:34:12,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860716407] [2022-12-13 18:34:12,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860716407] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:34:12,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:34:12,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:34:12,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900635283] [2022-12-13 18:34:12,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:34:12,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:34:12,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:34:12,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:34:12,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:34:12,928 INFO L87 Difference]: Start difference. First operand 274707 states and 467664 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 18:34:45,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:34:45,208 INFO L93 Difference]: Finished difference Result 274772 states and 467732 transitions. [2022-12-13 18:34:45,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:34:45,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-12-13 18:34:45,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:34:46,263 INFO L225 Difference]: With dead ends: 274772 [2022-12-13 18:34:46,264 INFO L226 Difference]: Without dead ends: 274329 [2022-12-13 18:34:46,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:34:46,408 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 652 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:34:46,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 820 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:34:46,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274329 states. [2022-12-13 18:35:19,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274329 to 274267. [2022-12-13 18:35:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274267 states, 245584 states have (on average 1.5232629161508893) internal successors, (374089), 247904 states have internal predecessors, (374089), 17744 states have call successors, (17744), 9357 states have call predecessors, (17744), 10937 states have return successors, (75317), 17517 states have call predecessors, (75317), 17741 states have call successors, (75317) [2022-12-13 18:35:21,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274267 states to 274267 states and 467150 transitions. [2022-12-13 18:35:21,153 INFO L78 Accepts]: Start accepts. Automaton has 274267 states and 467150 transitions. Word has length 147 [2022-12-13 18:35:21,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:35:21,153 INFO L495 AbstractCegarLoop]: Abstraction has 274267 states and 467150 transitions. [2022-12-13 18:35:21,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 18:35:21,153 INFO L276 IsEmpty]: Start isEmpty. Operand 274267 states and 467150 transitions. [2022-12-13 18:35:21,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-13 18:35:21,614 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:35:21,615 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:35:21,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 18:35:21,615 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:35:21,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:35:21,615 INFO L85 PathProgramCache]: Analyzing trace with hash 387664579, now seen corresponding path program 1 times [2022-12-13 18:35:21,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:35:21,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475681729] [2022-12-13 18:35:21,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:35:21,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:35:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:35:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:35:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:35:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:35:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:35:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:35:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:35:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 18:35:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 18:35:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 18:35:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 18:35:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:35:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:35:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 18:35:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 18:35:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 18:35:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-13 18:35:21,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:35:21,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475681729] [2022-12-13 18:35:21,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475681729] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:35:21,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:35:21,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:35:21,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715602776] [2022-12-13 18:35:21,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:35:21,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:35:21,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:35:21,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:35:21,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:35:21,701 INFO L87 Difference]: Start difference. First operand 274267 states and 467150 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 18:35:53,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:35:53,808 INFO L93 Difference]: Finished difference Result 275744 states and 468949 transitions. [2022-12-13 18:35:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:35:53,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-12-13 18:35:53,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:35:55,006 INFO L225 Difference]: With dead ends: 275744 [2022-12-13 18:35:55,006 INFO L226 Difference]: Without dead ends: 274368 [2022-12-13 18:35:55,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:35:55,155 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 582 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:35:55,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1178 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:35:55,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274368 states. [2022-12-13 18:36:28,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274368 to 274176. [2022-12-13 18:36:28,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274176 states, 245515 states have (on average 1.5233448058163452) internal successors, (374004), 247836 states have internal predecessors, (374004), 17735 states have call successors, (17735), 9352 states have call predecessors, (17735), 10924 states have return successors, (75301), 17499 states have call predecessors, (75301), 17732 states have call successors, (75301) [2022-12-13 18:36:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274176 states to 274176 states and 467040 transitions. [2022-12-13 18:36:29,905 INFO L78 Accepts]: Start accepts. Automaton has 274176 states and 467040 transitions. Word has length 159 [2022-12-13 18:36:29,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:36:29,906 INFO L495 AbstractCegarLoop]: Abstraction has 274176 states and 467040 transitions. [2022-12-13 18:36:29,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 18:36:29,906 INFO L276 IsEmpty]: Start isEmpty. Operand 274176 states and 467040 transitions. [2022-12-13 18:36:30,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-13 18:36:30,451 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:36:30,451 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:36:30,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 18:36:30,452 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:36:30,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:36:30,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1697135294, now seen corresponding path program 1 times [2022-12-13 18:36:30,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:36:30,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118459153] [2022-12-13 18:36:30,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:36:30,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:36:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:36:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:36:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:36:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:36:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:36:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:36:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:36:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 18:36:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 18:36:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 18:36:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 18:36:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:36:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:36:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 18:36:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 18:36:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 18:36:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,632 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-13 18:36:30,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:36:30,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118459153] [2022-12-13 18:36:30,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118459153] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:36:30,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91214407] [2022-12-13 18:36:30,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:36:30,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:36:30,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:36:30,633 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:36:30,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:36:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:30,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 18:36:30,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:36:30,836 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 18:36:30,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:36:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-12-13 18:36:31,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91214407] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:36:31,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:36:31,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-12-13 18:36:31,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56045358] [2022-12-13 18:36:31,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:36:31,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 18:36:31,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:36:31,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 18:36:31,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:36:31,032 INFO L87 Difference]: Start difference. First operand 274176 states and 467040 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-12-13 18:37:02,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:37:02,990 INFO L93 Difference]: Finished difference Result 276148 states and 469493 transitions. [2022-12-13 18:37:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 18:37:02,991 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-12-13 18:37:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:37:04,023 INFO L225 Difference]: With dead ends: 276148 [2022-12-13 18:37:04,023 INFO L226 Difference]: Without dead ends: 274716 [2022-12-13 18:37:04,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 353 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-12-13 18:37:04,301 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 1159 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:37:04,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 1789 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 18:37:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274716 states. [2022-12-13 18:37:35,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274716 to 274566. [2022-12-13 18:37:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274566 states, 245793 states have (on average 1.5228545971610257) internal successors, (374307), 248122 states have internal predecessors, (374307), 17789 states have call successors, (17789), 9402 states have call predecessors, (17789), 10982 states have return successors, (75415), 17553 states have call predecessors, (75415), 17786 states have call successors, (75415) [2022-12-13 18:37:36,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274566 states to 274566 states and 467511 transitions. [2022-12-13 18:37:36,684 INFO L78 Accepts]: Start accepts. Automaton has 274566 states and 467511 transitions. Word has length 162 [2022-12-13 18:37:36,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:37:36,685 INFO L495 AbstractCegarLoop]: Abstraction has 274566 states and 467511 transitions. [2022-12-13 18:37:36,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-12-13 18:37:36,685 INFO L276 IsEmpty]: Start isEmpty. Operand 274566 states and 467511 transitions. [2022-12-13 18:37:37,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-12-13 18:37:37,250 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:37:37,250 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:37,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:37:37,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-13 18:37:37,451 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:37:37,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:37:37,452 INFO L85 PathProgramCache]: Analyzing trace with hash -2118834643, now seen corresponding path program 1 times [2022-12-13 18:37:37,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:37:37,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905656105] [2022-12-13 18:37:37,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:37:37,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:37:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:37,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:37:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:37,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:37:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:37,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:37:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:37,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:37:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:37:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:37,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 18:37:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:37,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 18:37:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:37,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 18:37:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:37,604 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 18:37:37,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:37:37,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905656105] [2022-12-13 18:37:37,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905656105] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:37:37,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409497186] [2022-12-13 18:37:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:37:37,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:37:37,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:37:37,606 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:37:37,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:37:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:37,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 18:37:37,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:37:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 18:37:37,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:37:37,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409497186] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:37:37,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:37:37,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 18:37:37,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418759023] [2022-12-13 18:37:37,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:37:37,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:37:37,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:37:37,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:37:37,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:37:37,754 INFO L87 Difference]: Start difference. First operand 274566 states and 467511 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 18:38:38,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:38:38,276 INFO L93 Difference]: Finished difference Result 814419 states and 1400973 transitions. [2022-12-13 18:38:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:38:38,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 165 [2022-12-13 18:38:38,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:38:40,477 INFO L225 Difference]: With dead ends: 814419 [2022-12-13 18:38:40,477 INFO L226 Difference]: Without dead ends: 541794 [2022-12-13 18:38:41,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:38:41,257 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 387 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:38:41,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 746 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:38:41,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541794 states. [2022-12-13 18:39:43,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541794 to 538710. [2022-12-13 18:39:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538710 states, 482339 states have (on average 1.5227153516510172) internal successors, (734465), 486975 states have internal predecessors, (734465), 34611 states have call successors, (34611), 18642 states have call predecessors, (34611), 21758 states have return successors, (148848), 33604 states have call predecessors, (148848), 34608 states have call successors, (148848) [2022-12-13 18:39:45,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538710 states to 538710 states and 917924 transitions. [2022-12-13 18:39:45,916 INFO L78 Accepts]: Start accepts. Automaton has 538710 states and 917924 transitions. Word has length 165 [2022-12-13 18:39:45,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:39:45,917 INFO L495 AbstractCegarLoop]: Abstraction has 538710 states and 917924 transitions. [2022-12-13 18:39:45,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 18:39:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand 538710 states and 917924 transitions. [2022-12-13 18:39:46,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-12-13 18:39:46,960 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:39:46,960 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:39:46,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 18:39:47,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 18:39:47,162 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:39:47,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:39:47,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1374433971, now seen corresponding path program 1 times [2022-12-13 18:39:47,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:39:47,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122477731] [2022-12-13 18:39:47,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:39:47,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:39:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:47,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:39:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:47,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:39:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:47,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:39:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:47,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:39:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:47,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:39:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:47,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 18:39:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:47,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 18:39:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 18:39:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 18:39:47,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:39:47,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122477731] [2022-12-13 18:39:47,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122477731] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:39:47,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998663089] [2022-12-13 18:39:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:39:47,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:39:47,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:39:47,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:39:47,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c1aaa86-274c-43c3-b5fb-b830eea2f49e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:39:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:47,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 18:39:47,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:39:47,390 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 18:39:47,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:39:47,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998663089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:39:47,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:39:47,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 18:39:47,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671027546] [2022-12-13 18:39:47,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:39:47,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:39:47,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:39:47,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:39:47,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:39:47,391 INFO L87 Difference]: Start difference. First operand 538710 states and 917924 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)