./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_db102c86-318b-4518-8773-9bd564b76b7d/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db102c86-318b-4518-8773-9bd564b76b7d/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db102c86-318b-4518-8773-9bd564b76b7d/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db102c86-318b-4518-8773-9bd564b76b7d/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db102c86-318b-4518-8773-9bd564b76b7d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db102c86-318b-4518-8773-9bd564b76b7d/bin/uautomizer-TMbwUNV5ro --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 558f970b63375a18824a4471ce91e71e4e14632a20bfa5002df552fa8b202ea3 --- 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-8393723 [2022-11-18 20:16:24,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:16:24,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:16:24,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:16:24,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:16:24,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:16:24,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:16:24,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:16:24,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:16:24,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:16:24,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:16:24,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:16:24,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:16:24,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:16:24,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:16:24,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:16:24,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:16:24,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:16:24,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:16:24,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:16:24,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:16:24,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:16:24,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:16:24,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:16:24,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:16:24,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:16:24,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:16:24,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:16:24,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:16:24,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:16:24,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:16:24,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:16:24,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:16:24,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:16:24,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:16:24,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:16:24,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:16:24,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:16:24,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:16:24,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:16:24,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:16:24,568 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db102c86-318b-4518-8773-9bd564b76b7d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:16:24,605 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:16:24,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:16:24,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:16:24,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:16:24,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:16:24,607 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:16:24,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:16:24,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:16:24,608 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:16:24,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:16:24,609 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:16:24,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:16:24,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:16:24,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:16:24,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:16:24,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:16:24,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:16:24,611 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:16:24,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:16:24,611 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:16:24,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:16:24,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:16:24,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:16:24,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:16:24,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:16:24,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:16:24,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:16:24,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:16:24,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:16:24,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:16:24,615 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:16:24,615 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:16:24,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:16:24,616 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_db102c86-318b-4518-8773-9bd564b76b7d/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db102c86-318b-4518-8773-9bd564b76b7d/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 558f970b63375a18824a4471ce91e71e4e14632a20bfa5002df552fa8b202ea3 [2022-11-18 20:16:24,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:16:24,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:16:24,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:16:24,882 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:16:24,883 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:16:24,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db102c86-318b-4518-8773-9bd564b76b7d/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c [2022-11-18 20:16:24,980 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db102c86-318b-4518-8773-9bd564b76b7d/bin/uautomizer-TMbwUNV5ro/data/7613c9c76/4399a1fc52e8430684b95a80cdaad70f/FLAG0cad3f0aa [2022-11-18 20:16:25,447 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:16:25,448 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db102c86-318b-4518-8773-9bd564b76b7d/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c [2022-11-18 20:16:25,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db102c86-318b-4518-8773-9bd564b76b7d/bin/uautomizer-TMbwUNV5ro/data/7613c9c76/4399a1fc52e8430684b95a80cdaad70f/FLAG0cad3f0aa [2022-11-18 20:16:25,798 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db102c86-318b-4518-8773-9bd564b76b7d/bin/uautomizer-TMbwUNV5ro/data/7613c9c76/4399a1fc52e8430684b95a80cdaad70f [2022-11-18 20:16:25,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:16:25,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:16:25,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:16:25,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:16:25,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:16:25,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:16:25" (1/1) ... [2022-11-18 20:16:25,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@486b9268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:25, skipping insertion in model container [2022-11-18 20:16:25,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:16:25" (1/1) ... [2022-11-18 20:16:25,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:16:25,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:16:26,117 WARN L234 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_db102c86-318b-4518-8773-9bd564b76b7d/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c[14509,14522] [2022-11-18 20:16:26,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:16:26,130 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:16:26,189 WARN L234 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_db102c86-318b-4518-8773-9bd564b76b7d/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c[14509,14522] [2022-11-18 20:16:26,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:16:26,204 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:16:26,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:26 WrapperNode [2022-11-18 20:16:26,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:16:26,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:16:26,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:16:26,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:16:26,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:26" (1/1) ... [2022-11-18 20:16:26,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:26" (1/1) ... [2022-11-18 20:16:26,274 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 455 [2022-11-18 20:16:26,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:16:26,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:16:26,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:16:26,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:16:26,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:26" (1/1) ... [2022-11-18 20:16:26,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:26" (1/1) ... [2022-11-18 20:16:26,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:26" (1/1) ... [2022-11-18 20:16:26,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:26" (1/1) ... [2022-11-18 20:16:26,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:26" (1/1) ... [2022-11-18 20:16:26,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:26" (1/1) ... [2022-11-18 20:16:26,323 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:26" (1/1) ... [2022-11-18 20:16:26,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:26" (1/1) ... [2022-11-18 20:16:26,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:16:26,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:16:26,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:16:26,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:16:26,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:26" (1/1) ... [2022-11-18 20:16:26,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:16:26,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db102c86-318b-4518-8773-9bd564b76b7d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:16:26,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db102c86-318b-4518-8773-9bd564b76b7d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:16:26,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db102c86-318b-4518-8773-9bd564b76b7d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:16:26,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:16:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:16:26,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:16:26,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:16:26,522 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:16:26,525 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:16:27,208 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:16:27,217 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:16:27,228 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:16:27,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:16:27 BoogieIcfgContainer [2022-11-18 20:16:27,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:16:27,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:16:27,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:16:27,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:16:27,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:16:25" (1/3) ... [2022-11-18 20:16:27,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a57f3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:16:27, skipping insertion in model container [2022-11-18 20:16:27,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:26" (2/3) ... [2022-11-18 20:16:27,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a57f3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:16:27, skipping insertion in model container [2022-11-18 20:16:27,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:16:27" (3/3) ... [2022-11-18 20:16:27,244 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c [2022-11-18 20:16:27,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:16:27,269 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:16:27,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:16:27,352 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;@33608e8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:16:27,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:16:27,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 135 states have (on average 1.7703703703703704) internal successors, (239), 136 states have internal predecessors, (239), 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) [2022-11-18 20:16:27,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 20:16:27,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:27,383 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] [2022-11-18 20:16:27,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:27,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:27,393 INFO L85 PathProgramCache]: Analyzing trace with hash 395135632, now seen corresponding path program 1 times [2022-11-18 20:16:27,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:27,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540853997] [2022-11-18 20:16:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:27,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:27,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:27,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540853997] [2022-11-18 20:16:27,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540853997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:27,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:27,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:16:27,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530592234] [2022-11-18 20:16:27,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:27,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:16:27,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:27,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:16:27,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:16:27,693 INFO L87 Difference]: Start difference. First operand has 137 states, 135 states have (on average 1.7703703703703704) internal successors, (239), 136 states have internal predecessors, (239), 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 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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) [2022-11-18 20:16:27,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:27,746 INFO L93 Difference]: Finished difference Result 211 states and 367 transitions. [2022-11-18 20:16:27,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:16:27,748 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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 37 [2022-11-18 20:16:27,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:27,764 INFO L225 Difference]: With dead ends: 211 [2022-11-18 20:16:27,764 INFO L226 Difference]: Without dead ends: 133 [2022-11-18 20:16:27,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:16:27,772 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:27,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:16:27,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-18 20:16:27,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-11-18 20:16:27,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.7575757575757576) internal successors, (232), 132 states have internal predecessors, (232), 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) [2022-11-18 20:16:27,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 232 transitions. [2022-11-18 20:16:27,868 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 232 transitions. Word has length 37 [2022-11-18 20:16:27,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:27,869 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 232 transitions. [2022-11-18 20:16:27,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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) [2022-11-18 20:16:27,869 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 232 transitions. [2022-11-18 20:16:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 20:16:27,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:27,874 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] [2022-11-18 20:16:27,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:16:27,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:27,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:27,886 INFO L85 PathProgramCache]: Analyzing trace with hash -422512818, now seen corresponding path program 1 times [2022-11-18 20:16:27,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:27,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565633749] [2022-11-18 20:16:27,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:27,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:28,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:28,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:28,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565633749] [2022-11-18 20:16:28,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565633749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:28,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:28,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:16:28,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423474009] [2022-11-18 20:16:28,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:28,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:16:28,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:28,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:16:28,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:16:28,296 INFO L87 Difference]: Start difference. First operand 133 states and 232 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-11-18 20:16:28,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:28,436 INFO L93 Difference]: Finished difference Result 210 states and 360 transitions. [2022-11-18 20:16:28,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:16:28,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2022-11-18 20:16:28,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:28,444 INFO L225 Difference]: With dead ends: 210 [2022-11-18 20:16:28,445 INFO L226 Difference]: Without dead ends: 133 [2022-11-18 20:16:28,445 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 [2022-11-18 20:16:28,446 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 3 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:28,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 887 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:16:28,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-18 20:16:28,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-11-18 20:16:28,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.5303030303030303) internal successors, (202), 132 states have internal predecessors, (202), 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) [2022-11-18 20:16:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 202 transitions. [2022-11-18 20:16:28,459 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 202 transitions. Word has length 37 [2022-11-18 20:16:28,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:28,461 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 202 transitions. [2022-11-18 20:16:28,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-11-18 20:16:28,461 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 202 transitions. [2022-11-18 20:16:28,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 20:16:28,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:28,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:28,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:16:28,472 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:28,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:28,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1398422292, now seen corresponding path program 1 times [2022-11-18 20:16:28,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:28,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18761831] [2022-11-18 20:16:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:28,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:28,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:28,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18761831] [2022-11-18 20:16:28,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18761831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:28,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:28,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:28,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310964217] [2022-11-18 20:16:28,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:28,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:16:28,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:28,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:16:28,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:28,655 INFO L87 Difference]: Start difference. First operand 133 states and 202 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-11-18 20:16:28,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:28,736 INFO L93 Difference]: Finished difference Result 269 states and 432 transitions. [2022-11-18 20:16:28,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:16:28,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2022-11-18 20:16:28,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:28,741 INFO L225 Difference]: With dead ends: 269 [2022-11-18 20:16:28,741 INFO L226 Difference]: Without dead ends: 196 [2022-11-18 20:16:28,742 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 [2022-11-18 20:16:28,751 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 97 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:28,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 352 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:16:28,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-18 20:16:28,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2022-11-18 20:16:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.5625) internal successors, (300), 192 states have internal predecessors, (300), 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) [2022-11-18 20:16:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 300 transitions. [2022-11-18 20:16:28,769 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 300 transitions. Word has length 66 [2022-11-18 20:16:28,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:28,770 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 300 transitions. [2022-11-18 20:16:28,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-11-18 20:16:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 300 transitions. [2022-11-18 20:16:28,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:16:28,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:28,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:28,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:16:28,772 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:28,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:28,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1852534978, now seen corresponding path program 1 times [2022-11-18 20:16:28,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:28,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161837434] [2022-11-18 20:16:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:28,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:28,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:28,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161837434] [2022-11-18 20:16:28,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161837434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:28,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:28,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:28,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191912099] [2022-11-18 20:16:28,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:28,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:16:28,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:28,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:16:28,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:28,891 INFO L87 Difference]: Start difference. First operand 193 states and 300 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-18 20:16:28,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:28,940 INFO L93 Difference]: Finished difference Result 443 states and 716 transitions. [2022-11-18 20:16:28,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:16:28,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 68 [2022-11-18 20:16:28,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:28,944 INFO L225 Difference]: With dead ends: 443 [2022-11-18 20:16:28,945 INFO L226 Difference]: Without dead ends: 310 [2022-11-18 20:16:28,949 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 [2022-11-18 20:16:28,958 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 99 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:28,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 365 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:16:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-11-18 20:16:28,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 306. [2022-11-18 20:16:28,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.5967213114754097) internal successors, (487), 305 states have internal predecessors, (487), 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) [2022-11-18 20:16:28,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 487 transitions. [2022-11-18 20:16:28,981 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 487 transitions. Word has length 68 [2022-11-18 20:16:28,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:28,982 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 487 transitions. [2022-11-18 20:16:28,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2022-11-18 20:16:28,982 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 487 transitions. [2022-11-18 20:16:28,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-18 20:16:28,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:28,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:28,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:16:28,984 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:28,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:28,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1172652176, now seen corresponding path program 1 times [2022-11-18 20:16:28,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:28,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469724065] [2022-11-18 20:16:28,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:28,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:29,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:29,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:29,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469724065] [2022-11-18 20:16:29,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469724065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:29,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:29,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:29,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124785388] [2022-11-18 20:16:29,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:29,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:16:29,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:29,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:16:29,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:29,071 INFO L87 Difference]: Start difference. First operand 306 states and 487 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2022-11-18 20:16:29,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:29,114 INFO L93 Difference]: Finished difference Result 766 states and 1249 transitions. [2022-11-18 20:16:29,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:16:29,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 70 [2022-11-18 20:16:29,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:29,116 INFO L225 Difference]: With dead ends: 766 [2022-11-18 20:16:29,117 INFO L226 Difference]: Without dead ends: 520 [2022-11-18 20:16:29,117 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 [2022-11-18 20:16:29,118 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 93 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:29,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 366 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:16:29,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-11-18 20:16:29,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 514. [2022-11-18 20:16:29,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 1.612085769980507) internal successors, (827), 513 states have internal predecessors, (827), 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) [2022-11-18 20:16:29,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 827 transitions. [2022-11-18 20:16:29,148 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 827 transitions. Word has length 70 [2022-11-18 20:16:29,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:29,148 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 827 transitions. [2022-11-18 20:16:29,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2022-11-18 20:16:29,148 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 827 transitions. [2022-11-18 20:16:29,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 20:16:29,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:29,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:29,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:16:29,150 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:29,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:29,151 INFO L85 PathProgramCache]: Analyzing trace with hash 648029982, now seen corresponding path program 1 times [2022-11-18 20:16:29,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:29,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011695763] [2022-11-18 20:16:29,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:29,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:29,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:29,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011695763] [2022-11-18 20:16:29,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011695763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:29,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:29,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:16:29,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369498110] [2022-11-18 20:16:29,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:29,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:16:29,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:29,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:16:29,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:16:29,270 INFO L87 Difference]: Start difference. First operand 514 states and 827 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2022-11-18 20:16:29,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:29,527 INFO L93 Difference]: Finished difference Result 2190 states and 3633 transitions. [2022-11-18 20:16:29,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:16:29,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 72 [2022-11-18 20:16:29,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:29,540 INFO L225 Difference]: With dead ends: 2190 [2022-11-18 20:16:29,541 INFO L226 Difference]: Without dead ends: 1736 [2022-11-18 20:16:29,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:16:29,544 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 812 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:29,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 1144 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:16:29,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2022-11-18 20:16:29,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 912. [2022-11-18 20:16:29,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 911 states have (on average 1.628979143798024) internal successors, (1484), 911 states have internal predecessors, (1484), 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) [2022-11-18 20:16:29,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1484 transitions. [2022-11-18 20:16:29,627 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1484 transitions. Word has length 72 [2022-11-18 20:16:29,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:29,629 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1484 transitions. [2022-11-18 20:16:29,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2022-11-18 20:16:29,630 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1484 transitions. [2022-11-18 20:16:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:16:29,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:29,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:29,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:16:29,634 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:29,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:29,635 INFO L85 PathProgramCache]: Analyzing trace with hash 986227649, now seen corresponding path program 1 times [2022-11-18 20:16:29,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:29,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828370453] [2022-11-18 20:16:29,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:29,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:29,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:29,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828370453] [2022-11-18 20:16:29,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828370453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:29,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:29,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:16:29,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501729360] [2022-11-18 20:16:29,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:29,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:16:29,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:29,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:16:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:29,763 INFO L87 Difference]: Start difference. First operand 912 states and 1484 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2022-11-18 20:16:29,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:29,904 INFO L93 Difference]: Finished difference Result 2654 states and 4394 transitions. [2022-11-18 20:16:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:16:29,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 73 [2022-11-18 20:16:29,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:29,910 INFO L225 Difference]: With dead ends: 2654 [2022-11-18 20:16:29,910 INFO L226 Difference]: Without dead ends: 1802 [2022-11-18 20:16:29,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:16:29,913 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 359 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:29,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 578 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:16:29,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2022-11-18 20:16:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1348. [2022-11-18 20:16:29,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 1.6384558277654047) internal successors, (2207), 1347 states have internal predecessors, (2207), 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) [2022-11-18 20:16:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2207 transitions. [2022-11-18 20:16:29,987 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2207 transitions. Word has length 73 [2022-11-18 20:16:29,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:29,988 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 2207 transitions. [2022-11-18 20:16:29,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2022-11-18 20:16:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2207 transitions. [2022-11-18 20:16:29,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 20:16:29,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:29,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:29,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:16:29,990 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:29,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:29,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1245542219, now seen corresponding path program 1 times [2022-11-18 20:16:29,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:29,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341882970] [2022-11-18 20:16:29,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:29,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:30,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:30,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:30,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341882970] [2022-11-18 20:16:30,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341882970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:30,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:30,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:16:30,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315655938] [2022-11-18 20:16:30,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:30,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:16:30,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:30,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:16:30,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:30,118 INFO L87 Difference]: Start difference. First operand 1348 states and 2207 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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) [2022-11-18 20:16:30,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:30,318 INFO L93 Difference]: Finished difference Result 3908 states and 6458 transitions. [2022-11-18 20:16:30,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:16:30,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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 74 [2022-11-18 20:16:30,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:30,327 INFO L225 Difference]: With dead ends: 3908 [2022-11-18 20:16:30,328 INFO L226 Difference]: Without dead ends: 2620 [2022-11-18 20:16:30,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:16:30,330 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 357 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:30,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 652 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:16:30,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2022-11-18 20:16:30,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 1972. [2022-11-18 20:16:30,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1971 states have (on average 1.637239979705733) internal successors, (3227), 1971 states have internal predecessors, (3227), 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) [2022-11-18 20:16:30,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 3227 transitions. [2022-11-18 20:16:30,467 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 3227 transitions. Word has length 74 [2022-11-18 20:16:30,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:30,467 INFO L495 AbstractCegarLoop]: Abstraction has 1972 states and 3227 transitions. [2022-11-18 20:16:30,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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) [2022-11-18 20:16:30,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 3227 transitions. [2022-11-18 20:16:30,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-18 20:16:30,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:30,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:30,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:16:30,471 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:30,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:30,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1541927048, now seen corresponding path program 1 times [2022-11-18 20:16:30,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:30,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53762903] [2022-11-18 20:16:30,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:30,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:30,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:30,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53762903] [2022-11-18 20:16:30,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53762903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:30,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:30,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:16:30,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065152620] [2022-11-18 20:16:30,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:30,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:16:30,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:30,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:16:30,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:30,557 INFO L87 Difference]: Start difference. First operand 1972 states and 3227 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2022-11-18 20:16:30,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:30,815 INFO L93 Difference]: Finished difference Result 5692 states and 9382 transitions. [2022-11-18 20:16:30,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:16:30,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 75 [2022-11-18 20:16:30,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:30,828 INFO L225 Difference]: With dead ends: 5692 [2022-11-18 20:16:30,828 INFO L226 Difference]: Without dead ends: 3780 [2022-11-18 20:16:30,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:16:30,836 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 355 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:30,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 661 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:16:30,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3780 states. [2022-11-18 20:16:31,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3780 to 2860. [2022-11-18 20:16:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2859 states have (on average 1.634487583071004) internal successors, (4673), 2859 states have internal predecessors, (4673), 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) [2022-11-18 20:16:31,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 4673 transitions. [2022-11-18 20:16:31,030 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 4673 transitions. Word has length 75 [2022-11-18 20:16:31,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:31,030 INFO L495 AbstractCegarLoop]: Abstraction has 2860 states and 4673 transitions. [2022-11-18 20:16:31,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2022-11-18 20:16:31,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 4673 transitions. [2022-11-18 20:16:31,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-18 20:16:31,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:31,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:31,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:16:31,034 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:31,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:31,035 INFO L85 PathProgramCache]: Analyzing trace with hash 268884983, now seen corresponding path program 1 times [2022-11-18 20:16:31,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:31,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321668769] [2022-11-18 20:16:31,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:31,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:31,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:31,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321668769] [2022-11-18 20:16:31,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321668769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:31,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:31,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:31,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019543938] [2022-11-18 20:16:31,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:31,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:16:31,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:31,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:16:31,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:31,124 INFO L87 Difference]: Start difference. First operand 2860 states and 4673 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) 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) [2022-11-18 20:16:31,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:31,386 INFO L93 Difference]: Finished difference Result 6550 states and 10704 transitions. [2022-11-18 20:16:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:16:31,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) 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 [2022-11-18 20:16:31,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:31,403 INFO L225 Difference]: With dead ends: 6550 [2022-11-18 20:16:31,403 INFO L226 Difference]: Without dead ends: 4512 [2022-11-18 20:16:31,406 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 [2022-11-18 20:16:31,407 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 92 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:31,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 413 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:16:31,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2022-11-18 20:16:31,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 4510. [2022-11-18 20:16:31,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4509 states have (on average 1.6185406963850077) internal successors, (7298), 4509 states have internal predecessors, (7298), 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) [2022-11-18 20:16:31,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 7298 transitions. [2022-11-18 20:16:31,719 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 7298 transitions. Word has length 76 [2022-11-18 20:16:31,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:31,720 INFO L495 AbstractCegarLoop]: Abstraction has 4510 states and 7298 transitions. [2022-11-18 20:16:31,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) 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) [2022-11-18 20:16:31,720 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 7298 transitions. [2022-11-18 20:16:31,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-18 20:16:31,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:31,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:31,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:16:31,722 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:31,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:31,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1813417673, now seen corresponding path program 1 times [2022-11-18 20:16:31,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:31,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475567935] [2022-11-18 20:16:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:31,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:31,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:31,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:31,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475567935] [2022-11-18 20:16:31,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475567935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:31,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:31,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:31,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638276252] [2022-11-18 20:16:31,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:31,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:16:31,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:31,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:16:31,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:31,778 INFO L87 Difference]: Start difference. First operand 4510 states and 7298 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) 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) [2022-11-18 20:16:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:32,249 INFO L93 Difference]: Finished difference Result 9926 states and 16104 transitions. [2022-11-18 20:16:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:16:32,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) 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 [2022-11-18 20:16:32,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:32,271 INFO L225 Difference]: With dead ends: 9926 [2022-11-18 20:16:32,271 INFO L226 Difference]: Without dead ends: 6732 [2022-11-18 20:16:32,274 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 [2022-11-18 20:16:32,275 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 98 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:32,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 441 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:16:32,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6732 states. [2022-11-18 20:16:32,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6732 to 6730. [2022-11-18 20:16:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6730 states, 6729 states have (on average 1.607965522365879) internal successors, (10820), 6729 states have internal predecessors, (10820), 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) [2022-11-18 20:16:32,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6730 states to 6730 states and 10820 transitions. [2022-11-18 20:16:32,712 INFO L78 Accepts]: Start accepts. Automaton has 6730 states and 10820 transitions. Word has length 76 [2022-11-18 20:16:32,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:32,713 INFO L495 AbstractCegarLoop]: Abstraction has 6730 states and 10820 transitions. [2022-11-18 20:16:32,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) 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) [2022-11-18 20:16:32,713 INFO L276 IsEmpty]: Start isEmpty. Operand 6730 states and 10820 transitions. [2022-11-18 20:16:32,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-18 20:16:32,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:32,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:32,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:16:32,716 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:32,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:32,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1616320119, now seen corresponding path program 1 times [2022-11-18 20:16:32,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:32,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102848851] [2022-11-18 20:16:32,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:32,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:32,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:32,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:32,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102848851] [2022-11-18 20:16:32,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102848851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:32,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:32,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:32,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605652667] [2022-11-18 20:16:32,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:32,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:16:32,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:32,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:16:32,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:32,771 INFO L87 Difference]: Start difference. First operand 6730 states and 10820 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) 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) [2022-11-18 20:16:33,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:33,471 INFO L93 Difference]: Finished difference Result 15111 states and 24508 transitions. [2022-11-18 20:16:33,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:16:33,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) 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 [2022-11-18 20:16:33,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:33,503 INFO L225 Difference]: With dead ends: 15111 [2022-11-18 20:16:33,503 INFO L226 Difference]: Without dead ends: 10171 [2022-11-18 20:16:33,510 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 [2022-11-18 20:16:33,511 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 104 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:33,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 461 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:16:33,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10171 states. [2022-11-18 20:16:34,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10171 to 10169. [2022-11-18 20:16:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10169 states, 10168 states have (on average 1.6009047993705743) internal successors, (16278), 10168 states have internal predecessors, (16278), 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) [2022-11-18 20:16:34,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10169 states to 10169 states and 16278 transitions. [2022-11-18 20:16:34,218 INFO L78 Accepts]: Start accepts. Automaton has 10169 states and 16278 transitions. Word has length 76 [2022-11-18 20:16:34,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:34,219 INFO L495 AbstractCegarLoop]: Abstraction has 10169 states and 16278 transitions. [2022-11-18 20:16:34,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) 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) [2022-11-18 20:16:34,219 INFO L276 IsEmpty]: Start isEmpty. Operand 10169 states and 16278 transitions. [2022-11-18 20:16:34,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 20:16:34,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:34,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:34,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:16:34,221 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:34,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:34,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2139270896, now seen corresponding path program 1 times [2022-11-18 20:16:34,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:34,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751932381] [2022-11-18 20:16:34,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:34,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:34,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:34,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751932381] [2022-11-18 20:16:34,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751932381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:34,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:34,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:16:34,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870995870] [2022-11-18 20:16:34,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:34,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:16:34,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:34,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:16:34,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:16:34,454 INFO L87 Difference]: Start difference. First operand 10169 states and 16278 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2022-11-18 20:16:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:35,208 INFO L93 Difference]: Finished difference Result 20262 states and 32453 transitions. [2022-11-18 20:16:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:16:35,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 [2022-11-18 20:16:35,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:35,230 INFO L225 Difference]: With dead ends: 20262 [2022-11-18 20:16:35,230 INFO L226 Difference]: Without dead ends: 10171 [2022-11-18 20:16:35,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:16:35,240 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 359 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:35,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 537 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:16:35,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10171 states. [2022-11-18 20:16:35,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10171 to 10169. [2022-11-18 20:16:36,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10169 states, 10168 states have (on average 1.5886113296616837) internal successors, (16153), 10168 states have internal predecessors, (16153), 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) [2022-11-18 20:16:36,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10169 states to 10169 states and 16153 transitions. [2022-11-18 20:16:36,042 INFO L78 Accepts]: Start accepts. Automaton has 10169 states and 16153 transitions. Word has length 77 [2022-11-18 20:16:36,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:36,043 INFO L495 AbstractCegarLoop]: Abstraction has 10169 states and 16153 transitions. [2022-11-18 20:16:36,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2022-11-18 20:16:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 10169 states and 16153 transitions. [2022-11-18 20:16:36,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-18 20:16:36,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:36,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:36,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:16:36,046 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:36,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:36,047 INFO L85 PathProgramCache]: Analyzing trace with hash -297465128, now seen corresponding path program 1 times [2022-11-18 20:16:36,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:36,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161870644] [2022-11-18 20:16:36,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:36,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:36,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:36,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161870644] [2022-11-18 20:16:36,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161870644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:36,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:36,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:16:36,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431406628] [2022-11-18 20:16:36,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:36,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:16:36,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:36,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:16:36,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:16:36,287 INFO L87 Difference]: Start difference. First operand 10169 states and 16153 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 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) [2022-11-18 20:16:37,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:37,462 INFO L93 Difference]: Finished difference Result 29138 states and 46435 transitions. [2022-11-18 20:16:37,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:16:37,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 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 [2022-11-18 20:16:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:37,511 INFO L225 Difference]: With dead ends: 29138 [2022-11-18 20:16:37,511 INFO L226 Difference]: Without dead ends: 19047 [2022-11-18 20:16:37,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:16:37,520 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 353 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:37,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 541 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:16:37,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19047 states. [2022-11-18 20:16:38,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19047 to 19045. [2022-11-18 20:16:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19045 states, 19044 states have (on average 1.5750892669607226) internal successors, (29996), 19044 states have internal predecessors, (29996), 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) [2022-11-18 20:16:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19045 states to 19045 states and 29996 transitions. [2022-11-18 20:16:38,763 INFO L78 Accepts]: Start accepts. Automaton has 19045 states and 29996 transitions. Word has length 80 [2022-11-18 20:16:38,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:38,764 INFO L495 AbstractCegarLoop]: Abstraction has 19045 states and 29996 transitions. [2022-11-18 20:16:38,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 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) [2022-11-18 20:16:38,764 INFO L276 IsEmpty]: Start isEmpty. Operand 19045 states and 29996 transitions. [2022-11-18 20:16:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 20:16:38,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:38,765 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:38,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:16:38,766 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:38,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:38,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1060060007, now seen corresponding path program 1 times [2022-11-18 20:16:38,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:38,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808137368] [2022-11-18 20:16:38,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:38,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:39,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:39,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:39,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808137368] [2022-11-18 20:16:39,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808137368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:39,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:39,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:16:39,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705920864] [2022-11-18 20:16:39,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:39,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:16:39,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:39,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:16:39,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:16:39,054 INFO L87 Difference]: Start difference. First operand 19045 states and 29996 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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) [2022-11-18 20:16:41,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:41,875 INFO L93 Difference]: Finished difference Result 37464 states and 58281 transitions. [2022-11-18 20:16:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:16:41,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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 81 [2022-11-18 20:16:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:41,968 INFO L225 Difference]: With dead ends: 37464 [2022-11-18 20:16:41,969 INFO L226 Difference]: Without dead ends: 37462 [2022-11-18 20:16:41,975 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 [2022-11-18 20:16:41,976 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 908 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:41,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 1067 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:16:42,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37462 states. [2022-11-18 20:16:43,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37462 to 20131. [2022-11-18 20:16:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20131 states, 20130 states have (on average 1.5436164927968206) internal successors, (31073), 20130 states have internal predecessors, (31073), 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) [2022-11-18 20:16:43,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20131 states to 20131 states and 31073 transitions. [2022-11-18 20:16:43,561 INFO L78 Accepts]: Start accepts. Automaton has 20131 states and 31073 transitions. Word has length 81 [2022-11-18 20:16:43,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:43,561 INFO L495 AbstractCegarLoop]: Abstraction has 20131 states and 31073 transitions. [2022-11-18 20:16:43,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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) [2022-11-18 20:16:43,562 INFO L276 IsEmpty]: Start isEmpty. Operand 20131 states and 31073 transitions. [2022-11-18 20:16:43,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-18 20:16:43,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:43,565 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:43,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:16:43,565 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:43,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:43,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1195435618, now seen corresponding path program 1 times [2022-11-18 20:16:43,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:43,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645784640] [2022-11-18 20:16:43,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:43,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:43,736 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 20:16:43,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:43,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645784640] [2022-11-18 20:16:43,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645784640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:43,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:43,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:16:43,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417685476] [2022-11-18 20:16:43,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:43,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:16:43,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:43,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:16:43,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:16:43,741 INFO L87 Difference]: Start difference. First operand 20131 states and 31073 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2022-11-18 20:16:46,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:46,520 INFO L93 Difference]: Finished difference Result 49399 states and 76493 transitions. [2022-11-18 20:16:46,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:16:46,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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 109 [2022-11-18 20:16:46,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:46,572 INFO L225 Difference]: With dead ends: 49399 [2022-11-18 20:16:46,572 INFO L226 Difference]: Without dead ends: 39817 [2022-11-18 20:16:46,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:16:46,585 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 453 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:46,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 823 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:16:46,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39817 states. [2022-11-18 20:16:48,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39817 to 31003. [2022-11-18 20:16:48,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31003 states, 31002 states have (on average 1.5418037545964776) internal successors, (47799), 31002 states have internal predecessors, (47799), 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) [2022-11-18 20:16:48,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31003 states to 31003 states and 47799 transitions. [2022-11-18 20:16:48,912 INFO L78 Accepts]: Start accepts. Automaton has 31003 states and 47799 transitions. Word has length 109 [2022-11-18 20:16:48,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:48,913 INFO L495 AbstractCegarLoop]: Abstraction has 31003 states and 47799 transitions. [2022-11-18 20:16:48,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2022-11-18 20:16:48,913 INFO L276 IsEmpty]: Start isEmpty. Operand 31003 states and 47799 transitions. [2022-11-18 20:16:48,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-18 20:16:48,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:48,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:48,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:16:48,918 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:48,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:48,919 INFO L85 PathProgramCache]: Analyzing trace with hash -886867038, now seen corresponding path program 1 times [2022-11-18 20:16:48,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:48,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250244426] [2022-11-18 20:16:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:48,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:16:49,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:49,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250244426] [2022-11-18 20:16:49,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250244426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:49,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:49,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:16:49,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870678641] [2022-11-18 20:16:49,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:49,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:16:49,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:16:49,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:16:49,083 INFO L87 Difference]: Start difference. First operand 31003 states and 47799 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-11-18 20:16:51,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:51,995 INFO L93 Difference]: Finished difference Result 53263 states and 82485 transitions. [2022-11-18 20:16:51,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:16:51,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 109 [2022-11-18 20:16:51,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:52,070 INFO L225 Difference]: With dead ends: 53263 [2022-11-18 20:16:52,071 INFO L226 Difference]: Without dead ends: 43681 [2022-11-18 20:16:52,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:16:52,089 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 446 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:52,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 947 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:16:52,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43681 states. [2022-11-18 20:16:55,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43681 to 42075. [2022-11-18 20:16:55,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42075 states, 42074 states have (on average 1.5423064125112895) internal successors, (64891), 42074 states have internal predecessors, (64891), 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) [2022-11-18 20:16:55,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42075 states to 42075 states and 64891 transitions. [2022-11-18 20:16:55,085 INFO L78 Accepts]: Start accepts. Automaton has 42075 states and 64891 transitions. Word has length 109 [2022-11-18 20:16:55,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:55,085 INFO L495 AbstractCegarLoop]: Abstraction has 42075 states and 64891 transitions. [2022-11-18 20:16:55,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-11-18 20:16:55,085 INFO L276 IsEmpty]: Start isEmpty. Operand 42075 states and 64891 transitions. [2022-11-18 20:16:55,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-18 20:16:55,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:55,088 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:55,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:16:55,088 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:55,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:55,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1752096542, now seen corresponding path program 1 times [2022-11-18 20:16:55,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:55,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699900786] [2022-11-18 20:16:55,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:55,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:16:55,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:55,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699900786] [2022-11-18 20:16:55,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699900786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:55,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:55,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:16:55,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135551724] [2022-11-18 20:16:55,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:55,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:16:55,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:55,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:16:55,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:16:55,226 INFO L87 Difference]: Start difference. First operand 42075 states and 64891 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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) [2022-11-18 20:16:59,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:59,049 INFO L93 Difference]: Finished difference Result 59859 states and 92855 transitions. [2022-11-18 20:16:59,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:16:59,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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 109 [2022-11-18 20:16:59,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:59,113 INFO L225 Difference]: With dead ends: 59859 [2022-11-18 20:16:59,113 INFO L226 Difference]: Without dead ends: 50017 [2022-11-18 20:16:59,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:16:59,127 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 441 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:59,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 927 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:16:59,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50017 states. [2022-11-18 20:17:02,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50017 to 48411. [2022-11-18 20:17:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48411 states, 48410 states have (on average 1.5449493906217724) internal successors, (74791), 48410 states have internal predecessors, (74791), 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) [2022-11-18 20:17:02,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48411 states to 48411 states and 74791 transitions. [2022-11-18 20:17:02,432 INFO L78 Accepts]: Start accepts. Automaton has 48411 states and 74791 transitions. Word has length 109 [2022-11-18 20:17:02,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:02,432 INFO L495 AbstractCegarLoop]: Abstraction has 48411 states and 74791 transitions. [2022-11-18 20:17:02,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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) [2022-11-18 20:17:02,433 INFO L276 IsEmpty]: Start isEmpty. Operand 48411 states and 74791 transitions. [2022-11-18 20:17:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-18 20:17:02,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:02,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:02,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:17:02,437 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:02,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:02,437 INFO L85 PathProgramCache]: Analyzing trace with hash 19451263, now seen corresponding path program 1 times [2022-11-18 20:17:02,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:02,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40867545] [2022-11-18 20:17:02,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:02,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:17:02,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:02,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40867545] [2022-11-18 20:17:02,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40867545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:02,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:02,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:17:02,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126283419] [2022-11-18 20:17:02,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:02,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:17:02,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:02,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:17:02,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:17:02,526 INFO L87 Difference]: Start difference. First operand 48411 states and 74791 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2022-11-18 20:17:07,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:07,511 INFO L93 Difference]: Finished difference Result 107187 states and 166366 transitions. [2022-11-18 20:17:07,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:17:07,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 110 [2022-11-18 20:17:07,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:07,635 INFO L225 Difference]: With dead ends: 107187 [2022-11-18 20:17:07,635 INFO L226 Difference]: Without dead ends: 78153 [2022-11-18 20:17:07,662 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 [2022-11-18 20:17:07,663 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 81 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:07,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 366 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:17:07,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78153 states.