./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN --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 c07e007f9f3a362ec25382ccff24a1aeded702728f7c63228a63ffce5d34476e --- 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-6b4ec56 [2022-11-20 10:33:30,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:33:30,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:33:30,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:33:30,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:33:30,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:33:30,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:33:30,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:33:30,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:33:30,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:33:30,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:33:30,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:33:30,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:33:30,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:33:30,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:33:30,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:33:30,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:33:30,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:33:30,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:33:30,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:33:30,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:33:30,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:33:30,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:33:30,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:33:30,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:33:30,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:33:30,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:33:30,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:33:30,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:33:30,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:33:30,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:33:30,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:33:30,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:33:30,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:33:30,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:33:30,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:33:30,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:33:30,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:33:30,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:33:30,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:33:30,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:33:30,541 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:33:30,594 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:33:30,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:33:30,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:33:30,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:33:30,601 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:33:30,601 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:33:30,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:33:30,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:33:30,603 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:33:30,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:33:30,605 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:33:30,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:33:30,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:33:30,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:33:30,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:33:30,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:33:30,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:33:30,607 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:33:30,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:33:30,607 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:33:30,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:33:30,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:33:30,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:33:30,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:33:30,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:33:30,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:33:30,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:33:30,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:33:30,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:33:30,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:33:30,611 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:33:30,611 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:33:30,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:33:30,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c07e007f9f3a362ec25382ccff24a1aeded702728f7c63228a63ffce5d34476e [2022-11-20 10:33:30,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:33:30,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:33:30,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:33:30,987 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:33:30,987 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:33:30,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c [2022-11-20 10:33:34,807 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:33:35,437 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:33:35,438 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c [2022-11-20 10:33:35,481 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/data/2a0af9d87/8c64840cddde4a0aa2fd748dd1dc1af8/FLAG31fc0dcfe [2022-11-20 10:33:35,504 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/data/2a0af9d87/8c64840cddde4a0aa2fd748dd1dc1af8 [2022-11-20 10:33:35,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:33:35,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:33:35,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:33:35,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:33:35,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:33:35,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:35" (1/1) ... [2022-11-20 10:33:35,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d37a98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:35, skipping insertion in model container [2022-11-20 10:33:35,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:35" (1/1) ... [2022-11-20 10:33:35,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:33:35,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:33:36,114 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_ceeb6369-72c0-4a6d-8d47-4c47499d2541/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c[11640,11653] [2022-11-20 10:33:36,147 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_ceeb6369-72c0-4a6d-8d47-4c47499d2541/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c[12482,12495] [2022-11-20 10:33:37,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:33:37,493 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:33:37,566 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_ceeb6369-72c0-4a6d-8d47-4c47499d2541/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c[11640,11653] [2022-11-20 10:33:37,578 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_ceeb6369-72c0-4a6d-8d47-4c47499d2541/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c[12482,12495] [2022-11-20 10:33:38,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:33:38,306 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:33:38,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:38 WrapperNode [2022-11-20 10:33:38,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:33:38,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:33:38,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:33:38,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:33:38,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:38" (1/1) ... [2022-11-20 10:33:38,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:38" (1/1) ... [2022-11-20 10:33:38,904 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5070 [2022-11-20 10:33:38,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:33:38,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:33:38,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:33:38,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:33:38,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:38" (1/1) ... [2022-11-20 10:33:38,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:38" (1/1) ... [2022-11-20 10:33:39,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:38" (1/1) ... [2022-11-20 10:33:39,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:38" (1/1) ... [2022-11-20 10:33:39,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:38" (1/1) ... [2022-11-20 10:33:39,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:38" (1/1) ... [2022-11-20 10:33:39,331 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:38" (1/1) ... [2022-11-20 10:33:39,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:38" (1/1) ... [2022-11-20 10:33:39,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:33:39,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:33:39,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:33:39,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:33:39,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:38" (1/1) ... [2022-11-20 10:33:39,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:33:39,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:39,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:33:39,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:33:39,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:33:39,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:33:39,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:33:39,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:33:39,775 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:33:39,778 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:33:46,265 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:33:46,285 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:33:46,285 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 10:33:46,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:46 BoogieIcfgContainer [2022-11-20 10:33:46,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:33:46,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:33:46,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:33:46,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:33:46,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:33:35" (1/3) ... [2022-11-20 10:33:46,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eccd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:46, skipping insertion in model container [2022-11-20 10:33:46,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:38" (2/3) ... [2022-11-20 10:33:46,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eccd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:46, skipping insertion in model container [2022-11-20 10:33:46,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:46" (3/3) ... [2022-11-20 10:33:46,301 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c [2022-11-20 10:33:46,339 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:33:46,339 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 10:33:46,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:33:46,454 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;@6b0970de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:33:46,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 10:33:46,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 10:33:46,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:46,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:46,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:46,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:46,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2122437590, now seen corresponding path program 1 times [2022-11-20 10:33:46,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:46,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125318239] [2022-11-20 10:33:46,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:46,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:46,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:46,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125318239] [2022-11-20 10:33:46,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125318239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:46,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:46,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:33:46,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067237079] [2022-11-20 10:33:46,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:46,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:33:46,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:46,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:33:46,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:46,936 INFO L87 Difference]: Start difference. First operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:53,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:53,272 INFO L93 Difference]: Finished difference Result 2516 states and 4846 transitions. [2022-11-20 10:33:53,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:33:53,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 10:33:53,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:53,302 INFO L225 Difference]: With dead ends: 2516 [2022-11-20 10:33:53,303 INFO L226 Difference]: Without dead ends: 1584 [2022-11-20 10:33:53,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:53,315 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 1029 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:53,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 296 Invalid, 3208 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-20 10:33:53,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2022-11-20 10:33:53,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1584. [2022-11-20 10:33:53,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1582 states have (on average 1.8413400758533502) internal successors, (2913), 1583 states have internal predecessors, (2913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:53,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2913 transitions. [2022-11-20 10:33:53,506 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2913 transitions. Word has length 7 [2022-11-20 10:33:53,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:53,508 INFO L495 AbstractCegarLoop]: Abstraction has 1584 states and 2913 transitions. [2022-11-20 10:33:53,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:53,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2913 transitions. [2022-11-20 10:33:53,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 10:33:53,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:53,511 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] [2022-11-20 10:33:53,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:33:53,514 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:53,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:53,516 INFO L85 PathProgramCache]: Analyzing trace with hash 502082675, now seen corresponding path program 1 times [2022-11-20 10:33:53,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:53,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167919787] [2022-11-20 10:33:53,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:53,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:53,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:53,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:53,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167919787] [2022-11-20 10:33:53,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167919787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:53,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:53,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:33:53,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091127125] [2022-11-20 10:33:53,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:53,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:33:53,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:53,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:33:53,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:53,929 INFO L87 Difference]: Start difference. First operand 1584 states and 2913 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:54,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:54,068 INFO L93 Difference]: Finished difference Result 1630 states and 2984 transitions. [2022-11-20 10:33:54,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:54,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 10:33:54,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:54,078 INFO L225 Difference]: With dead ends: 1630 [2022-11-20 10:33:54,078 INFO L226 Difference]: Without dead ends: 1584 [2022-11-20 10:33:54,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:33:54,081 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 3 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6254 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:54,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6254 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:33:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2022-11-20 10:33:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1584. [2022-11-20 10:33:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1582 states have (on average 1.8217446270543616) internal successors, (2882), 1583 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:54,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2882 transitions. [2022-11-20 10:33:54,139 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2882 transitions. Word has length 24 [2022-11-20 10:33:54,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:54,140 INFO L495 AbstractCegarLoop]: Abstraction has 1584 states and 2882 transitions. [2022-11-20 10:33:54,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:54,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2882 transitions. [2022-11-20 10:33:54,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 10:33:54,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:54,143 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] [2022-11-20 10:33:54,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:33:54,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:54,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:54,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1518044022, now seen corresponding path program 1 times [2022-11-20 10:33:54,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:54,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405068858] [2022-11-20 10:33:54,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:54,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:54,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:54,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:54,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405068858] [2022-11-20 10:33:54,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405068858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:54,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:54,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:33:54,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548476564] [2022-11-20 10:33:54,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:54,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:33:54,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:54,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:33:54,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:33:54,410 INFO L87 Difference]: Start difference. First operand 1584 states and 2882 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:54,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:54,783 INFO L93 Difference]: Finished difference Result 2004 states and 3552 transitions. [2022-11-20 10:33:54,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:33:54,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-20 10:33:54,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:54,795 INFO L225 Difference]: With dead ends: 2004 [2022-11-20 10:33:54,796 INFO L226 Difference]: Without dead ends: 1962 [2022-11-20 10:33:54,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:33:54,808 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 7953 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7953 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:54,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7953 Valid, 2746 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:33:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2022-11-20 10:33:54,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1624. [2022-11-20 10:33:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1622 states have (on average 1.816276202219482) internal successors, (2946), 1623 states have internal predecessors, (2946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2946 transitions. [2022-11-20 10:33:54,879 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2946 transitions. Word has length 54 [2022-11-20 10:33:54,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:54,880 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 2946 transitions. [2022-11-20 10:33:54,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:54,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2946 transitions. [2022-11-20 10:33:54,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 10:33:54,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:54,893 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] [2022-11-20 10:33:54,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:33:54,893 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:54,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:54,896 INFO L85 PathProgramCache]: Analyzing trace with hash 32878714, now seen corresponding path program 1 times [2022-11-20 10:33:54,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:54,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808608597] [2022-11-20 10:33:54,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:54,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:55,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:55,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808608597] [2022-11-20 10:33:55,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808608597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:55,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:55,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:33:55,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186152224] [2022-11-20 10:33:55,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:55,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:33:55,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:55,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:33:55,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:55,064 INFO L87 Difference]: Start difference. First operand 1624 states and 2946 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:55,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:55,133 INFO L93 Difference]: Finished difference Result 1777 states and 3189 transitions. [2022-11-20 10:33:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:33:55,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-20 10:33:55,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:55,142 INFO L225 Difference]: With dead ends: 1777 [2022-11-20 10:33:55,143 INFO L226 Difference]: Without dead ends: 1695 [2022-11-20 10:33:55,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:55,154 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1482 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:55,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1603 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:33:55,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2022-11-20 10:33:55,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1693. [2022-11-20 10:33:55,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1691 states have (on average 1.8060319337670019) internal successors, (3054), 1692 states have internal predecessors, (3054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 3054 transitions. [2022-11-20 10:33:55,222 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 3054 transitions. Word has length 56 [2022-11-20 10:33:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:55,222 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 3054 transitions. [2022-11-20 10:33:55,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:55,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 3054 transitions. [2022-11-20 10:33:55,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 10:33:55,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:55,224 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] [2022-11-20 10:33:55,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:33:55,225 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:55,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:55,226 INFO L85 PathProgramCache]: Analyzing trace with hash 99372226, now seen corresponding path program 1 times [2022-11-20 10:33:55,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:55,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391372872] [2022-11-20 10:33:55,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:55,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:55,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:55,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391372872] [2022-11-20 10:33:55,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391372872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:55,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:55,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:33:55,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191012848] [2022-11-20 10:33:55,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:55,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:33:55,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:55,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:33:55,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:33:55,622 INFO L87 Difference]: Start difference. First operand 1693 states and 3054 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:55,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:55,900 INFO L93 Difference]: Finished difference Result 1846 states and 3294 transitions. [2022-11-20 10:33:55,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:33:55,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-20 10:33:55,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:55,910 INFO L225 Difference]: With dead ends: 1846 [2022-11-20 10:33:55,911 INFO L226 Difference]: Without dead ends: 1695 [2022-11-20 10:33:55,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:33:55,913 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 3114 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:55,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3114 Valid, 1792 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:33:55,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2022-11-20 10:33:55,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1693. [2022-11-20 10:33:55,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1691 states have (on average 1.8048492016558249) internal successors, (3052), 1692 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 3052 transitions. [2022-11-20 10:33:55,986 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 3052 transitions. Word has length 56 [2022-11-20 10:33:55,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:55,987 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 3052 transitions. [2022-11-20 10:33:55,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:55,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 3052 transitions. [2022-11-20 10:33:55,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 10:33:55,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:55,989 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] [2022-11-20 10:33:55,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:33:55,990 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:55,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:55,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1629151369, now seen corresponding path program 1 times [2022-11-20 10:33:55,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:55,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143688295] [2022-11-20 10:33:55,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:55,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:56,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:56,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:56,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143688295] [2022-11-20 10:33:56,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143688295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:56,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:56,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:33:56,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391075321] [2022-11-20 10:33:56,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:56,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:33:56,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:56,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:33:56,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:33:56,420 INFO L87 Difference]: Start difference. First operand 1693 states and 3052 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:56,674 INFO L93 Difference]: Finished difference Result 1841 states and 3279 transitions. [2022-11-20 10:33:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:33:56,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-20 10:33:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:56,684 INFO L225 Difference]: With dead ends: 1841 [2022-11-20 10:33:56,684 INFO L226 Difference]: Without dead ends: 1839 [2022-11-20 10:33:56,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:33:56,687 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 394 mSDsluCounter, 9035 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 10633 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:56,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 10633 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:33:56,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2022-11-20 10:33:56,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1699. [2022-11-20 10:33:56,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1697 states have (on average 1.8014142604596346) internal successors, (3057), 1698 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:56,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 3057 transitions. [2022-11-20 10:33:56,762 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 3057 transitions. Word has length 57 [2022-11-20 10:33:56,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:56,762 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 3057 transitions. [2022-11-20 10:33:56,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:56,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 3057 transitions. [2022-11-20 10:33:56,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 10:33:56,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:56,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:56,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:33:56,765 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:56,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:56,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1409361730, now seen corresponding path program 1 times [2022-11-20 10:33:56,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:56,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447814437] [2022-11-20 10:33:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:56,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:56,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:56,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447814437] [2022-11-20 10:33:56,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447814437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:56,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:56,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:33:56,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892145472] [2022-11-20 10:33:56,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:56,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:33:56,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:56,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:33:56,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:56,839 INFO L87 Difference]: Start difference. First operand 1699 states and 3057 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:56,917 INFO L93 Difference]: Finished difference Result 1869 states and 3318 transitions. [2022-11-20 10:33:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:33:56,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-20 10:33:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:56,927 INFO L225 Difference]: With dead ends: 1869 [2022-11-20 10:33:56,927 INFO L226 Difference]: Without dead ends: 1781 [2022-11-20 10:33:56,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:56,929 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1496 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:56,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:33:56,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2022-11-20 10:33:57,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1779. [2022-11-20 10:33:57,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1777 states have (on average 1.7884074282498592) internal successors, (3178), 1778 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:57,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 3178 transitions. [2022-11-20 10:33:57,015 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 3178 transitions. Word has length 58 [2022-11-20 10:33:57,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:57,015 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 3178 transitions. [2022-11-20 10:33:57,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 3178 transitions. [2022-11-20 10:33:57,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 10:33:57,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:57,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:57,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:33:57,018 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:57,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:57,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1383487166, now seen corresponding path program 1 times [2022-11-20 10:33:57,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:57,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902564564] [2022-11-20 10:33:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:57,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:57,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:57,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:57,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902564564] [2022-11-20 10:33:57,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902564564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:57,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:57,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:33:57,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246626395] [2022-11-20 10:33:57,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:57,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:33:57,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:57,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:33:57,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:57,087 INFO L87 Difference]: Start difference. First operand 1779 states and 3178 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:57,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:57,219 INFO L93 Difference]: Finished difference Result 2225 states and 3858 transitions. [2022-11-20 10:33:57,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:33:57,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-20 10:33:57,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:57,229 INFO L225 Difference]: With dead ends: 2225 [2022-11-20 10:33:57,237 INFO L226 Difference]: Without dead ends: 1990 [2022-11-20 10:33:57,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:57,253 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1492 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:57,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:33:57,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2022-11-20 10:33:57,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1988. [2022-11-20 10:33:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1988 states, 1986 states have (on average 1.75730110775428) internal successors, (3490), 1987 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:57,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3490 transitions. [2022-11-20 10:33:57,440 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3490 transitions. Word has length 58 [2022-11-20 10:33:57,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:57,440 INFO L495 AbstractCegarLoop]: Abstraction has 1988 states and 3490 transitions. [2022-11-20 10:33:57,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:57,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3490 transitions. [2022-11-20 10:33:57,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 10:33:57,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:57,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:57,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:33:57,443 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:57,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:57,444 INFO L85 PathProgramCache]: Analyzing trace with hash 696011330, now seen corresponding path program 1 times [2022-11-20 10:33:57,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:57,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631208010] [2022-11-20 10:33:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:57,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:57,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:57,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:57,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631208010] [2022-11-20 10:33:57,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631208010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:57,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:57,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:33:57,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428322894] [2022-11-20 10:33:57,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:57,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:33:57,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:57,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:33:57,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:57,509 INFO L87 Difference]: Start difference. First operand 1988 states and 3490 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:57,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:57,690 INFO L93 Difference]: Finished difference Result 2828 states and 4752 transitions. [2022-11-20 10:33:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:33:57,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-20 10:33:57,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:57,701 INFO L225 Difference]: With dead ends: 2828 [2022-11-20 10:33:57,702 INFO L226 Difference]: Without dead ends: 2384 [2022-11-20 10:33:57,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:57,704 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1490 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:57,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1665 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:33:57,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2022-11-20 10:33:57,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2382. [2022-11-20 10:33:57,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2380 states have (on average 1.7084033613445377) internal successors, (4066), 2381 states have internal predecessors, (4066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 4066 transitions. [2022-11-20 10:33:57,956 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 4066 transitions. Word has length 58 [2022-11-20 10:33:57,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:57,957 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 4066 transitions. [2022-11-20 10:33:57,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:57,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 4066 transitions. [2022-11-20 10:33:57,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 10:33:57,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:57,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:57,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:33:57,959 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:57,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:57,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1818023102, now seen corresponding path program 1 times [2022-11-20 10:33:57,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:57,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432217779] [2022-11-20 10:33:57,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:57,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:58,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:58,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432217779] [2022-11-20 10:33:58,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432217779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:58,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:58,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:33:58,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980008871] [2022-11-20 10:33:58,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:58,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:33:58,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:58,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:33:58,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:58,055 INFO L87 Difference]: Start difference. First operand 2382 states and 4066 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:58,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:58,424 INFO L93 Difference]: Finished difference Result 3962 states and 6396 transitions. [2022-11-20 10:33:58,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:33:58,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-20 10:33:58,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:58,439 INFO L225 Difference]: With dead ends: 3962 [2022-11-20 10:33:58,439 INFO L226 Difference]: Without dead ends: 3124 [2022-11-20 10:33:58,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:58,443 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1488 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:58,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1667 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:33:58,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2022-11-20 10:33:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 3122. [2022-11-20 10:33:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3122 states, 3120 states have (on average 1.6416666666666666) internal successors, (5122), 3121 states have internal predecessors, (5122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:58,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 5122 transitions. [2022-11-20 10:33:58,902 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 5122 transitions. Word has length 58 [2022-11-20 10:33:58,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:58,902 INFO L495 AbstractCegarLoop]: Abstraction has 3122 states and 5122 transitions. [2022-11-20 10:33:58,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:58,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 5122 transitions. [2022-11-20 10:33:58,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 10:33:58,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:58,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:58,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:33:58,905 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:58,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:58,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1673218114, now seen corresponding path program 1 times [2022-11-20 10:33:58,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:58,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627700397] [2022-11-20 10:33:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:58,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:58,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:58,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627700397] [2022-11-20 10:33:58,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627700397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:58,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:58,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:33:58,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971587531] [2022-11-20 10:33:58,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:58,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:33:58,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:58,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:33:58,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:58,997 INFO L87 Difference]: Start difference. First operand 3122 states and 5122 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:59,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:59,869 INFO L93 Difference]: Finished difference Result 6086 states and 9396 transitions. [2022-11-20 10:33:59,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:33:59,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-20 10:33:59,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:59,906 INFO L225 Difference]: With dead ends: 6086 [2022-11-20 10:33:59,915 INFO L226 Difference]: Without dead ends: 4508 [2022-11-20 10:33:59,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:59,920 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 1494 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:59,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1669 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:33:59,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4508 states. [2022-11-20 10:34:00,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4508 to 4506. [2022-11-20 10:34:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4504 states have (on average 1.5634991119005328) internal successors, (7042), 4505 states have internal predecessors, (7042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:00,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 7042 transitions. [2022-11-20 10:34:00,676 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 7042 transitions. Word has length 58 [2022-11-20 10:34:00,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:00,677 INFO L495 AbstractCegarLoop]: Abstraction has 4506 states and 7042 transitions. [2022-11-20 10:34:00,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:00,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 7042 transitions. [2022-11-20 10:34:00,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 10:34:00,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:00,689 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:34:00,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:34:00,690 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:34:00,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:00,691 INFO L85 PathProgramCache]: Analyzing trace with hash -408325598, now seen corresponding path program 1 times [2022-11-20 10:34:00,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:00,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376609752] [2022-11-20 10:34:00,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:00,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:34:01,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:01,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376609752] [2022-11-20 10:34:01,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376609752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:34:01,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:34:01,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:34:01,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442120756] [2022-11-20 10:34:01,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:01,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:34:01,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:01,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:34:01,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:34:01,059 INFO L87 Difference]: Start difference. First operand 4506 states and 7042 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:11,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:11,181 INFO L93 Difference]: Finished difference Result 8263 states and 13932 transitions. [2022-11-20 10:34:11,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:34:11,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-20 10:34:11,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:11,199 INFO L225 Difference]: With dead ends: 8263 [2022-11-20 10:34:11,199 INFO L226 Difference]: Without dead ends: 6759 [2022-11-20 10:34:11,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:34:11,204 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 2367 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 1138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2367 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 5943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1138 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:11,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2367 Valid, 818 Invalid, 5943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1138 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-20 10:34:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6759 states. [2022-11-20 10:34:11,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6759 to 6759. [2022-11-20 10:34:11,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6759 states, 6757 states have (on average 1.4253366878792364) internal successors, (9631), 6758 states have internal predecessors, (9631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:12,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6759 states to 6759 states and 9631 transitions. [2022-11-20 10:34:12,012 INFO L78 Accepts]: Start accepts. Automaton has 6759 states and 9631 transitions. Word has length 76 [2022-11-20 10:34:12,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:12,012 INFO L495 AbstractCegarLoop]: Abstraction has 6759 states and 9631 transitions. [2022-11-20 10:34:12,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:12,013 INFO L276 IsEmpty]: Start isEmpty. Operand 6759 states and 9631 transitions. [2022-11-20 10:34:12,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 10:34:12,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:12,016 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:34:12,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:34:12,016 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:34:12,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:12,017 INFO L85 PathProgramCache]: Analyzing trace with hash 273219202, now seen corresponding path program 1 times [2022-11-20 10:34:12,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:12,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920308931] [2022-11-20 10:34:12,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:12,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:12,377 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:34:12,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:12,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920308931] [2022-11-20 10:34:12,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920308931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:34:12,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:34:12,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:34:12,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911332295] [2022-11-20 10:34:12,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:12,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:34:12,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:12,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:34:12,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:34:12,381 INFO L87 Difference]: Start difference. First operand 6759 states and 9631 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:15,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:15,317 INFO L93 Difference]: Finished difference Result 21363 states and 30437 transitions. [2022-11-20 10:34:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:34:15,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-20 10:34:15,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:15,368 INFO L225 Difference]: With dead ends: 21363 [2022-11-20 10:34:15,368 INFO L226 Difference]: Without dead ends: 19249 [2022-11-20 10:34:15,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:34:15,377 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6306 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6306 SdHoareTripleChecker+Valid, 3588 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:15,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6306 Valid, 3588 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:34:15,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19249 states. [2022-11-20 10:34:16,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19249 to 9303. [2022-11-20 10:34:16,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9303 states, 9301 states have (on average 1.4208149661326739) internal successors, (13215), 9302 states have internal predecessors, (13215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:16,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9303 states to 9303 states and 13215 transitions. [2022-11-20 10:34:16,812 INFO L78 Accepts]: Start accepts. Automaton has 9303 states and 13215 transitions. Word has length 77 [2022-11-20 10:34:16,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:16,813 INFO L495 AbstractCegarLoop]: Abstraction has 9303 states and 13215 transitions. [2022-11-20 10:34:16,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:16,814 INFO L276 IsEmpty]: Start isEmpty. Operand 9303 states and 13215 transitions. [2022-11-20 10:34:16,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 10:34:16,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:16,817 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:34:16,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:34:16,818 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:34:16,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:16,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1775337602, now seen corresponding path program 1 times [2022-11-20 10:34:16,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:16,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21902712] [2022-11-20 10:34:16,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:16,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 10:34:17,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:17,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21902712] [2022-11-20 10:34:17,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21902712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:34:17,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:34:17,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:34:17,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410218967] [2022-11-20 10:34:17,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:17,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:34:17,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:17,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:34:17,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:34:17,031 INFO L87 Difference]: Start difference. First operand 9303 states and 13215 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:20,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:20,851 INFO L93 Difference]: Finished difference Result 24323 states and 34629 transitions. [2022-11-20 10:34:20,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:34:20,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-20 10:34:20,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:20,909 INFO L225 Difference]: With dead ends: 24323 [2022-11-20 10:34:20,910 INFO L226 Difference]: Without dead ends: 21361 [2022-11-20 10:34:20,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:34:20,919 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6354 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6354 SdHoareTripleChecker+Valid, 3597 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:20,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6354 Valid, 3597 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:34:20,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21361 states. [2022-11-20 10:34:23,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21361 to 13319. [2022-11-20 10:34:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13319 states, 13317 states have (on average 1.4164601637005332) internal successors, (18863), 13318 states have internal predecessors, (18863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13319 states to 13319 states and 18863 transitions. [2022-11-20 10:34:23,146 INFO L78 Accepts]: Start accepts. Automaton has 13319 states and 18863 transitions. Word has length 77 [2022-11-20 10:34:23,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:23,146 INFO L495 AbstractCegarLoop]: Abstraction has 13319 states and 18863 transitions. [2022-11-20 10:34:23,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:23,147 INFO L276 IsEmpty]: Start isEmpty. Operand 13319 states and 18863 transitions. [2022-11-20 10:34:23,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 10:34:23,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:23,151 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:34:23,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:34:23,152 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:34:23,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:23,153 INFO L85 PathProgramCache]: Analyzing trace with hash -440131198, now seen corresponding path program 1 times [2022-11-20 10:34:23,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:23,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997338476] [2022-11-20 10:34:23,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:23,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 10:34:23,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:23,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997338476] [2022-11-20 10:34:23,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997338476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:34:23,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:34:23,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:34:23,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589735769] [2022-11-20 10:34:23,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:23,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:34:23,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:23,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:34:23,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:34:23,389 INFO L87 Difference]: Start difference. First operand 13319 states and 18863 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:27,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:27,404 INFO L93 Difference]: Finished difference Result 27283 states and 38805 transitions. [2022-11-20 10:34:27,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:34:27,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-20 10:34:27,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:27,452 INFO L225 Difference]: With dead ends: 27283 [2022-11-20 10:34:27,452 INFO L226 Difference]: Without dead ends: 24321 [2022-11-20 10:34:27,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:34:27,463 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6400 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6400 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:27,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6400 Valid, 3562 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:34:27,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24321 states. [2022-11-20 10:34:30,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24321 to 16279. [2022-11-20 10:34:30,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16279 states, 16277 states have (on average 1.4154328193155987) internal successors, (23039), 16278 states have internal predecessors, (23039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:30,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16279 states to 16279 states and 23039 transitions. [2022-11-20 10:34:30,692 INFO L78 Accepts]: Start accepts. Automaton has 16279 states and 23039 transitions. Word has length 77 [2022-11-20 10:34:30,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:30,693 INFO L495 AbstractCegarLoop]: Abstraction has 16279 states and 23039 transitions. [2022-11-20 10:34:30,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:30,694 INFO L276 IsEmpty]: Start isEmpty. Operand 16279 states and 23039 transitions. [2022-11-20 10:34:30,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 10:34:30,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:30,699 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:34:30,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:34:30,699 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:34:30,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:30,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1340801666, now seen corresponding path program 1 times [2022-11-20 10:34:30,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:30,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697442564] [2022-11-20 10:34:30,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:30,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 10:34:30,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:30,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697442564] [2022-11-20 10:34:30,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697442564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:34:30,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:34:30,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:34:30,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501717436] [2022-11-20 10:34:30,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:30,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:34:30,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:30,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:34:30,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:34:30,958 INFO L87 Difference]: Start difference. First operand 16279 states and 23039 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:35,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:35,692 INFO L93 Difference]: Finished difference Result 30243 states and 42981 transitions. [2022-11-20 10:34:35,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:34:35,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-20 10:34:35,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:35,749 INFO L225 Difference]: With dead ends: 30243 [2022-11-20 10:34:35,749 INFO L226 Difference]: Without dead ends: 27281 [2022-11-20 10:34:35,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:34:35,762 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6354 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6354 SdHoareTripleChecker+Valid, 3617 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:35,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6354 Valid, 3617 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:34:35,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27281 states. [2022-11-20 10:34:38,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27281 to 19239. [2022-11-20 10:34:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19239 states, 19237 states have (on average 1.414721630191818) internal successors, (27215), 19238 states have internal predecessors, (27215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:38,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19239 states to 19239 states and 27215 transitions. [2022-11-20 10:34:38,802 INFO L78 Accepts]: Start accepts. Automaton has 19239 states and 27215 transitions. Word has length 77 [2022-11-20 10:34:38,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:38,802 INFO L495 AbstractCegarLoop]: Abstraction has 19239 states and 27215 transitions. [2022-11-20 10:34:38,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:38,803 INFO L276 IsEmpty]: Start isEmpty. Operand 19239 states and 27215 transitions. [2022-11-20 10:34:38,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 10:34:38,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:38,807 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:34:38,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:34:38,808 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:34:38,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:38,809 INFO L85 PathProgramCache]: Analyzing trace with hash 537075586, now seen corresponding path program 1 times [2022-11-20 10:34:38,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:38,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516332995] [2022-11-20 10:34:38,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:38,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:34:39,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:39,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516332995] [2022-11-20 10:34:39,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516332995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:34:39,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:34:39,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:34:39,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197806776] [2022-11-20 10:34:39,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:39,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:34:39,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:39,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:34:39,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:34:39,141 INFO L87 Difference]: Start difference. First operand 19239 states and 27215 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:44,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:44,947 INFO L93 Difference]: Finished difference Result 33203 states and 47157 transitions. [2022-11-20 10:34:44,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:34:44,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-20 10:34:44,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:44,989 INFO L225 Difference]: With dead ends: 33203 [2022-11-20 10:34:44,990 INFO L226 Difference]: Without dead ends: 30241 [2022-11-20 10:34:44,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:34:44,998 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 6308 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6308 SdHoareTripleChecker+Valid, 3698 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:44,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6308 Valid, 3698 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:34:45,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30241 states. [2022-11-20 10:34:48,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30241 to 22199. [2022-11-20 10:34:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22199 states, 22197 states have (on average 1.414200117132946) internal successors, (31391), 22198 states have internal predecessors, (31391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:48,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22199 states to 22199 states and 31391 transitions. [2022-11-20 10:34:48,654 INFO L78 Accepts]: Start accepts. Automaton has 22199 states and 31391 transitions. Word has length 77 [2022-11-20 10:34:48,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:48,655 INFO L495 AbstractCegarLoop]: Abstraction has 22199 states and 31391 transitions. [2022-11-20 10:34:48,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:48,655 INFO L276 IsEmpty]: Start isEmpty. Operand 22199 states and 31391 transitions. [2022-11-20 10:34:48,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 10:34:48,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:48,659 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] [2022-11-20 10:34:48,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:34:48,659 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:34:48,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:48,659 INFO L85 PathProgramCache]: Analyzing trace with hash 895246760, now seen corresponding path program 1 times [2022-11-20 10:34:48,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:48,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209431567] [2022-11-20 10:34:48,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:48,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:48,815 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:34:48,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:48,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209431567] [2022-11-20 10:34:48,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209431567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:34:48,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:34:48,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:34:48,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733333172] [2022-11-20 10:34:48,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:48,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:34:48,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:48,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:34:48,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:34:48,818 INFO L87 Difference]: Start difference. First operand 22199 states and 31391 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:53,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:53,164 INFO L93 Difference]: Finished difference Result 40603 states and 57377 transitions. [2022-11-20 10:34:53,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:34:53,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-20 10:34:53,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:53,193 INFO L225 Difference]: With dead ends: 40603 [2022-11-20 10:34:53,193 INFO L226 Difference]: Without dead ends: 22201 [2022-11-20 10:34:53,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:34:53,210 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 45 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:53,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:34:53,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22201 states. [2022-11-20 10:34:56,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22201 to 22199. [2022-11-20 10:34:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22199 states, 22197 states have (on average 1.400864981754291) internal successors, (31095), 22198 states have internal predecessors, (31095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:56,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22199 states to 22199 states and 31095 transitions. [2022-11-20 10:34:56,761 INFO L78 Accepts]: Start accepts. Automaton has 22199 states and 31095 transitions. Word has length 78 [2022-11-20 10:34:56,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:56,761 INFO L495 AbstractCegarLoop]: Abstraction has 22199 states and 31095 transitions. [2022-11-20 10:34:56,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:56,761 INFO L276 IsEmpty]: Start isEmpty. Operand 22199 states and 31095 transitions. [2022-11-20 10:34:56,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 10:34:56,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:56,764 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:34:56,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:34:56,764 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:34:56,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:56,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1513793571, now seen corresponding path program 1 times [2022-11-20 10:34:56,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:56,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995298193] [2022-11-20 10:34:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:56,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:56,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:34:56,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:56,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995298193] [2022-11-20 10:34:56,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995298193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:34:56,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:34:56,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:34:56,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119006460] [2022-11-20 10:34:56,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:56,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:34:56,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:56,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:34:56,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:34:56,864 INFO L87 Difference]: Start difference. First operand 22199 states and 31095 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:05,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:05,500 INFO L93 Difference]: Finished difference Result 26707 states and 38478 transitions. [2022-11-20 10:35:05,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:35:05,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-20 10:35:05,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:05,534 INFO L225 Difference]: With dead ends: 26707 [2022-11-20 10:35:05,534 INFO L226 Difference]: Without dead ends: 23701 [2022-11-20 10:35:05,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:05,543 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 829 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:05,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 578 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 10:35:05,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23701 states. [2022-11-20 10:35:09,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23701 to 23701. [2022-11-20 10:35:09,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23701 states, 23699 states have (on average 1.3931811468838347) internal successors, (33017), 23700 states have internal predecessors, (33017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23701 states to 23701 states and 33017 transitions. [2022-11-20 10:35:09,058 INFO L78 Accepts]: Start accepts. Automaton has 23701 states and 33017 transitions. Word has length 78 [2022-11-20 10:35:09,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:09,059 INFO L495 AbstractCegarLoop]: Abstraction has 23701 states and 33017 transitions. [2022-11-20 10:35:09,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:09,059 INFO L276 IsEmpty]: Start isEmpty. Operand 23701 states and 33017 transitions. [2022-11-20 10:35:09,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:35:09,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:09,063 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:35:09,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:35:09,063 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:09,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:09,064 INFO L85 PathProgramCache]: Analyzing trace with hash -615640646, now seen corresponding path program 1 times [2022-11-20 10:35:09,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:09,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692404175] [2022-11-20 10:35:09,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:09,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:09,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:09,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692404175] [2022-11-20 10:35:09,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692404175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:09,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:09,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:09,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489871681] [2022-11-20 10:35:09,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:09,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:09,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:09,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:09,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:09,267 INFO L87 Difference]: Start difference. First operand 23701 states and 33017 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:11,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:11,208 INFO L93 Difference]: Finished difference Result 30588 states and 42711 transitions. [2022-11-20 10:35:11,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:35:11,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-20 10:35:11,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:11,225 INFO L225 Difference]: With dead ends: 30588 [2022-11-20 10:35:11,225 INFO L226 Difference]: Without dead ends: 12186 [2022-11-20 10:35:11,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:11,240 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 39 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:11,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3105 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:35:11,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12186 states. [2022-11-20 10:35:12,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12186 to 12178. [2022-11-20 10:35:12,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12178 states, 12176 states have (on average 1.3887976346911959) internal successors, (16910), 12177 states have internal predecessors, (16910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:12,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12178 states to 12178 states and 16910 transitions. [2022-11-20 10:35:12,558 INFO L78 Accepts]: Start accepts. Automaton has 12178 states and 16910 transitions. Word has length 79 [2022-11-20 10:35:12,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:12,558 INFO L495 AbstractCegarLoop]: Abstraction has 12178 states and 16910 transitions. [2022-11-20 10:35:12,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:12,559 INFO L276 IsEmpty]: Start isEmpty. Operand 12178 states and 16910 transitions. [2022-11-20 10:35:12,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 10:35:12,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:12,561 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:12,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 10:35:12,562 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:12,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:12,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1683802150, now seen corresponding path program 1 times [2022-11-20 10:35:12,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:12,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939946644] [2022-11-20 10:35:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:12,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:12,683 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:12,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:12,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939946644] [2022-11-20 10:35:12,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939946644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:12,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:12,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:12,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768773949] [2022-11-20 10:35:12,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:12,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:12,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:12,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:12,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:12,686 INFO L87 Difference]: Start difference. First operand 12178 states and 16910 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:13,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:13,656 INFO L93 Difference]: Finished difference Result 15614 states and 21696 transitions. [2022-11-20 10:35:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:35:13,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-20 10:35:13,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:13,666 INFO L225 Difference]: With dead ends: 15614 [2022-11-20 10:35:13,666 INFO L226 Difference]: Without dead ends: 8748 [2022-11-20 10:35:13,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:13,673 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 41 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:13,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3084 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:35:13,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8748 states. [2022-11-20 10:35:14,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8748 to 8746. [2022-11-20 10:35:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8746 states, 8744 states have (on average 1.380832570905764) internal successors, (12074), 8745 states have internal predecessors, (12074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:14,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8746 states to 8746 states and 12074 transitions. [2022-11-20 10:35:14,367 INFO L78 Accepts]: Start accepts. Automaton has 8746 states and 12074 transitions. Word has length 80 [2022-11-20 10:35:14,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:14,367 INFO L495 AbstractCegarLoop]: Abstraction has 8746 states and 12074 transitions. [2022-11-20 10:35:14,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:14,368 INFO L276 IsEmpty]: Start isEmpty. Operand 8746 states and 12074 transitions. [2022-11-20 10:35:14,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 10:35:14,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:14,370 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:14,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 10:35:14,371 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:14,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:14,371 INFO L85 PathProgramCache]: Analyzing trace with hash 263472268, now seen corresponding path program 1 times [2022-11-20 10:35:14,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:14,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205003553] [2022-11-20 10:35:14,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:14,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:14,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:14,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205003553] [2022-11-20 10:35:14,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205003553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:14,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:14,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:14,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299731578] [2022-11-20 10:35:14,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:14,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:14,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:14,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:14,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:14,490 INFO L87 Difference]: Start difference. First operand 8746 states and 12074 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:15,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:15,066 INFO L93 Difference]: Finished difference Result 10466 states and 14442 transitions. [2022-11-20 10:35:15,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:35:15,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-20 10:35:15,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:15,075 INFO L225 Difference]: With dead ends: 10466 [2022-11-20 10:35:15,076 INFO L226 Difference]: Without dead ends: 7032 [2022-11-20 10:35:15,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:15,081 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 38 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:15,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3069 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:35:15,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7032 states. [2022-11-20 10:35:15,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7032 to 7030. [2022-11-20 10:35:15,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7030 states, 7028 states have (on average 1.377632327831531) internal successors, (9682), 7029 states have internal predecessors, (9682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:15,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7030 states to 7030 states and 9682 transitions. [2022-11-20 10:35:15,469 INFO L78 Accepts]: Start accepts. Automaton has 7030 states and 9682 transitions. Word has length 82 [2022-11-20 10:35:15,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:15,469 INFO L495 AbstractCegarLoop]: Abstraction has 7030 states and 9682 transitions. [2022-11-20 10:35:15,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:15,470 INFO L276 IsEmpty]: Start isEmpty. Operand 7030 states and 9682 transitions. [2022-11-20 10:35:15,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-20 10:35:15,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:15,472 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:35:15,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 10:35:15,473 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:15,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:15,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1956730946, now seen corresponding path program 1 times [2022-11-20 10:35:15,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:15,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864462165] [2022-11-20 10:35:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:15,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:15,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:15,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864462165] [2022-11-20 10:35:15,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864462165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:15,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:15,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:15,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096506352] [2022-11-20 10:35:15,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:15,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:15,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:15,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:15,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:15,588 INFO L87 Difference]: Start difference. First operand 7030 states and 9682 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:15,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:15,845 INFO L93 Difference]: Finished difference Result 7892 states and 10854 transitions. [2022-11-20 10:35:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:35:15,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-11-20 10:35:15,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:15,853 INFO L225 Difference]: With dead ends: 7892 [2022-11-20 10:35:15,853 INFO L226 Difference]: Without dead ends: 6174 [2022-11-20 10:35:15,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:15,856 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 35 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:15,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3054 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:35:15,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6174 states. [2022-11-20 10:35:16,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6174 to 6172. [2022-11-20 10:35:16,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6172 states, 6170 states have (on average 1.3774716369529985) internal successors, (8499), 6171 states have internal predecessors, (8499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:16,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6172 states to 6172 states and 8499 transitions. [2022-11-20 10:35:16,103 INFO L78 Accepts]: Start accepts. Automaton has 6172 states and 8499 transitions. Word has length 84 [2022-11-20 10:35:16,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:16,103 INFO L495 AbstractCegarLoop]: Abstraction has 6172 states and 8499 transitions. [2022-11-20 10:35:16,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:16,103 INFO L276 IsEmpty]: Start isEmpty. Operand 6172 states and 8499 transitions. [2022-11-20 10:35:16,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 10:35:16,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:16,105 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:35:16,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 10:35:16,106 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:16,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:16,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1389986160, now seen corresponding path program 1 times [2022-11-20 10:35:16,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:16,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455665596] [2022-11-20 10:35:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:16,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:17,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:17,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455665596] [2022-11-20 10:35:17,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455665596] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:17,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226080078] [2022-11-20 10:35:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:17,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:17,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:17,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:35:17,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:35:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:17,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 10:35:17,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:35:17,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:35:18,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226080078] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:35:18,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:35:18,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2022-11-20 10:35:18,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109706173] [2022-11-20 10:35:18,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:35:18,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:35:18,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:18,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:35:18,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:35:18,185 INFO L87 Difference]: Start difference. First operand 6172 states and 8499 transitions. Second operand has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:24,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:24,275 INFO L93 Difference]: Finished difference Result 12565 states and 16924 transitions. [2022-11-20 10:35:24,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 10:35:24,276 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-20 10:35:24,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:24,289 INFO L225 Difference]: With dead ends: 12565 [2022-11-20 10:35:24,289 INFO L226 Difference]: Without dead ends: 11705 [2022-11-20 10:35:24,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=659, Invalid=2881, Unknown=0, NotChecked=0, Total=3540 [2022-11-20 10:35:24,294 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 16778 mSDsluCounter, 6456 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16778 SdHoareTripleChecker+Valid, 7972 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:24,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16778 Valid, 7972 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:35:24,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11705 states. [2022-11-20 10:35:25,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11705 to 9508. [2022-11-20 10:35:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9508 states, 9506 states have (on average 1.3406269724384599) internal successors, (12744), 9507 states have internal predecessors, (12744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9508 states to 9508 states and 12744 transitions. [2022-11-20 10:35:25,381 INFO L78 Accepts]: Start accepts. Automaton has 9508 states and 12744 transitions. Word has length 86 [2022-11-20 10:35:25,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:25,381 INFO L495 AbstractCegarLoop]: Abstraction has 9508 states and 12744 transitions. [2022-11-20 10:35:25,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:25,382 INFO L276 IsEmpty]: Start isEmpty. Operand 9508 states and 12744 transitions. [2022-11-20 10:35:25,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 10:35:25,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:25,384 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:35:25,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:35:25,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:25,591 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:25,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:25,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1667542172, now seen corresponding path program 1 times [2022-11-20 10:35:25,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:25,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794618333] [2022-11-20 10:35:25,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:25,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:27,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:27,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:27,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794618333] [2022-11-20 10:35:27,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794618333] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:27,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463036177] [2022-11-20 10:35:27,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:27,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:27,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:27,048 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:35:27,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:35:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:27,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:35:27,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:29,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:31,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463036177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:35:31,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:35:31,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2022-11-20 10:35:31,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271425286] [2022-11-20 10:35:31,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:35:31,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 10:35:31,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:31,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 10:35:31,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1074, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 10:35:31,649 INFO L87 Difference]: Start difference. First operand 9508 states and 12744 transitions. Second operand has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:34,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:34,906 INFO L93 Difference]: Finished difference Result 81711 states and 105444 transitions. [2022-11-20 10:36:34,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-11-20 10:36:34,906 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-11-20 10:36:34,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:35,020 INFO L225 Difference]: With dead ends: 81711 [2022-11-20 10:36:35,020 INFO L226 Difference]: Without dead ends: 77740 [2022-11-20 10:36:35,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23318 ImplicationChecksByTransitivity, 36.8s TimeCoverageRelationStatistics Valid=7220, Invalid=49662, Unknown=0, NotChecked=0, Total=56882 [2022-11-20 10:36:35,045 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 28135 mSDsluCounter, 21644 mSDsCounter, 0 mSdLazyCounter, 3028 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28135 SdHoareTripleChecker+Valid, 23280 SdHoareTripleChecker+Invalid, 3211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 3028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:35,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28135 Valid, 23280 Invalid, 3211 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [183 Valid, 3028 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-20 10:36:35,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77740 states. [2022-11-20 10:36:41,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77740 to 21443. [2022-11-20 10:36:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21443 states, 21441 states have (on average 1.2919639942166876) internal successors, (27701), 21442 states have internal predecessors, (27701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21443 states to 21443 states and 27701 transitions. [2022-11-20 10:36:41,475 INFO L78 Accepts]: Start accepts. Automaton has 21443 states and 27701 transitions. Word has length 87 [2022-11-20 10:36:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:41,476 INFO L495 AbstractCegarLoop]: Abstraction has 21443 states and 27701 transitions. [2022-11-20 10:36:41,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:41,476 INFO L276 IsEmpty]: Start isEmpty. Operand 21443 states and 27701 transitions. [2022-11-20 10:36:41,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 10:36:41,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:41,479 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:36:41,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:41,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 10:36:41,688 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:41,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:41,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1769142018, now seen corresponding path program 1 times [2022-11-20 10:36:41,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:41,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507551769] [2022-11-20 10:36:41,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:41,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:43,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:43,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507551769] [2022-11-20 10:36:43,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507551769] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:43,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519402402] [2022-11-20 10:36:43,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:43,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:43,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:43,057 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:43,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:36:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:43,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 10:36:43,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:44,543 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:44,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:46,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519402402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:46,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:46,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-11-20 10:36:46,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799208705] [2022-11-20 10:36:46,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:46,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 10:36:46,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:46,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 10:36:46,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2022-11-20 10:36:46,915 INFO L87 Difference]: Start difference. First operand 21443 states and 27701 transitions. Second operand has 32 states, 32 states have (on average 7.6875) internal successors, (246), 32 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:06,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:06,664 INFO L93 Difference]: Finished difference Result 62375 states and 78218 transitions. [2022-11-20 10:37:06,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 10:37:06,665 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.6875) internal successors, (246), 32 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-20 10:37:06,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:06,728 INFO L225 Difference]: With dead ends: 62375 [2022-11-20 10:37:06,729 INFO L226 Difference]: Without dead ends: 47947 [2022-11-20 10:37:06,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=640, Invalid=2222, Unknown=0, NotChecked=0, Total=2862 [2022-11-20 10:37:06,741 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 18716 mSDsluCounter, 8092 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18716 SdHoareTripleChecker+Valid, 9616 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:06,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18716 Valid, 9616 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 10:37:06,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47947 states. [2022-11-20 10:37:19,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47947 to 36793. [2022-11-20 10:37:19,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36793 states, 36791 states have (on average 1.267212089913294) internal successors, (46622), 36792 states have internal predecessors, (46622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36793 states to 36793 states and 46622 transitions. [2022-11-20 10:37:19,677 INFO L78 Accepts]: Start accepts. Automaton has 36793 states and 46622 transitions. Word has length 88 [2022-11-20 10:37:19,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:19,677 INFO L495 AbstractCegarLoop]: Abstraction has 36793 states and 46622 transitions. [2022-11-20 10:37:19,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.6875) internal successors, (246), 32 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 36793 states and 46622 transitions. [2022-11-20 10:37:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 10:37:19,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:19,679 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:37:19,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 10:37:19,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 10:37:19,880 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:19,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:19,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1728911506, now seen corresponding path program 1 times [2022-11-20 10:37:19,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:19,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255276143] [2022-11-20 10:37:19,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:19,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:20,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:20,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255276143] [2022-11-20 10:37:20,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255276143] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:20,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605385921] [2022-11-20 10:37:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:20,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:20,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:20,466 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:20,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceeb6369-72c0-4a6d-8d47-4c47499d2541/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:37:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:20,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:37:20,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:21,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:23,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605385921] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:37:23,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:37:23,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-20 10:37:23,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048434603] [2022-11-20 10:37:23,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:37:23,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 10:37:23,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:23,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 10:37:23,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2022-11-20 10:37:23,117 INFO L87 Difference]: Start difference. First operand 36793 states and 46622 transitions. Second operand has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:53,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:53,416 INFO L93 Difference]: Finished difference Result 84317 states and 105496 transitions. [2022-11-20 10:37:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 10:37:53,416 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-20 10:37:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:53,501 INFO L225 Difference]: With dead ends: 84317 [2022-11-20 10:37:53,501 INFO L226 Difference]: Without dead ends: 55657 [2022-11-20 10:37:53,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=886, Invalid=3274, Unknown=0, NotChecked=0, Total=4160 [2022-11-20 10:37:53,526 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 20797 mSDsluCounter, 5620 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20797 SdHoareTripleChecker+Valid, 7207 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:53,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20797 Valid, 7207 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 10:37:53,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55657 states.