./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa --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 1aca40c6fb295c9a2e56226d72fd8b40da8517a7cbcabf878259c9e76e6a2f97 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:42:08,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:42:08,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:42:08,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:42:08,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:42:08,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:42:08,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:42:08,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:42:08,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:42:08,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:42:08,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:42:08,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:42:08,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:42:08,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:42:08,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:42:08,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:42:08,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:42:08,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:42:08,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:42:08,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:42:08,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:42:08,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:42:08,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:42:08,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:42:08,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:42:08,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:42:08,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:42:08,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:42:08,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:42:08,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:42:08,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:42:08,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:42:08,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:42:08,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:42:08,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:42:08,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:42:08,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:42:08,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:42:08,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:42:08,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:42:08,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:42:08,408 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:42:08,427 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:42:08,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:42:08,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:42:08,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:42:08,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:42:08,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:42:08,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:42:08,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:42:08,429 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:42:08,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:42:08,429 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:42:08,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:42:08,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:42:08,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:42:08,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:42:08,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:42:08,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:42:08,431 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:42:08,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:42:08,431 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:42:08,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:42:08,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:42:08,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:42:08,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:42:08,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:42:08,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:42:08,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:42:08,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:42:08,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:42:08,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:42:08,432 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:42:08,433 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:42:08,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:42:08,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:42:08,433 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_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1aca40c6fb295c9a2e56226d72fd8b40da8517a7cbcabf878259c9e76e6a2f97 [2021-12-06 18:42:08,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:42:08,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:42:08,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:42:08,629 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:42:08,630 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:42:08,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label04.c [2021-12-06 18:42:08,675 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/data/ea38e9a60/780d1ada0d314b2b90367671245922b1/FLAG1b256c4d0 [2021-12-06 18:42:09,289 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:42:09,290 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label04.c [2021-12-06 18:42:09,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/data/ea38e9a60/780d1ada0d314b2b90367671245922b1/FLAG1b256c4d0 [2021-12-06 18:42:09,674 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/data/ea38e9a60/780d1ada0d314b2b90367671245922b1 [2021-12-06 18:42:09,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:42:09,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:42:09,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:42:09,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:42:09,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:42:09,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:42:09" (1/1) ... [2021-12-06 18:42:09,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae8a119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:09, skipping insertion in model container [2021-12-06 18:42:09,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:42:09" (1/1) ... [2021-12-06 18:42:09,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:42:09,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:42:10,055 WARN L230 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_5bd219df-834e-4baf-8a4f-45553848e45d/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label04.c[11668,11681] [2021-12-06 18:42:10,103 WARN L230 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_5bd219df-834e-4baf-8a4f-45553848e45d/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label04.c[18729,18742] [2021-12-06 18:42:10,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:42:10,639 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:42:10,663 WARN L230 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_5bd219df-834e-4baf-8a4f-45553848e45d/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label04.c[11668,11681] [2021-12-06 18:42:10,674 WARN L230 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_5bd219df-834e-4baf-8a4f-45553848e45d/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label04.c[18729,18742] [2021-12-06 18:42:11,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:42:11,054 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:42:11,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:11 WrapperNode [2021-12-06 18:42:11,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:42:11,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:42:11,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:42:11,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:42:11,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:11" (1/1) ... [2021-12-06 18:42:11,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:11" (1/1) ... [2021-12-06 18:42:11,347 INFO L137 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5088 [2021-12-06 18:42:11,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:42:11,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:42:11,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:42:11,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:42:11,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:11" (1/1) ... [2021-12-06 18:42:11,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:11" (1/1) ... [2021-12-06 18:42:11,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:11" (1/1) ... [2021-12-06 18:42:11,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:11" (1/1) ... [2021-12-06 18:42:11,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:11" (1/1) ... [2021-12-06 18:42:11,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:11" (1/1) ... [2021-12-06 18:42:11,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:11" (1/1) ... [2021-12-06 18:42:11,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:42:11,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:42:11,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:42:11,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:42:11,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:11" (1/1) ... [2021-12-06 18:42:11,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:42:11,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:42:11,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:42:11,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:42:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:42:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:42:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:42:11,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:42:11,804 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:42:11,805 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:42:14,692 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:42:14,710 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:42:14,710 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:42:14,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:42:14 BoogieIcfgContainer [2021-12-06 18:42:14,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:42:14,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:42:14,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:42:14,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:42:14,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:42:09" (1/3) ... [2021-12-06 18:42:14,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c90329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:42:14, skipping insertion in model container [2021-12-06 18:42:14,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:42:11" (2/3) ... [2021-12-06 18:42:14,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c90329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:42:14, skipping insertion in model container [2021-12-06 18:42:14,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:42:14" (3/3) ... [2021-12-06 18:42:14,721 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label04.c [2021-12-06 18:42:14,725 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:42:14,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 18:42:14,766 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:42:14,770 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:42:14,771 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 18:42:14,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 911 states, 908 states have (on average 1.8997797356828194) internal successors, (1725), 910 states have internal predecessors, (1725), 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) [2021-12-06 18:42:14,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:42:14,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:14,805 INFO L514 BasicCegarLoop]: 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] [2021-12-06 18:42:14,805 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:14,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:14,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1083425478, now seen corresponding path program 1 times [2021-12-06 18:42:14,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:14,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068220182] [2021-12-06 18:42:14,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:14,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:14,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:14,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068220182] [2021-12-06 18:42:14,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068220182] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:14,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:14,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:42:14,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667367670] [2021-12-06 18:42:14,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:14,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:42:14,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:15,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:42:15,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:42:15,020 INFO L87 Difference]: Start difference. First operand has 911 states, 908 states have (on average 1.8997797356828194) internal successors, (1725), 910 states have internal predecessors, (1725), 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 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2021-12-06 18:42:15,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:15,087 INFO L93 Difference]: Finished difference Result 1783 states and 3378 transitions. [2021-12-06 18:42:15,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:42:15,088 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2021-12-06 18:42:15,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:15,105 INFO L225 Difference]: With dead ends: 1783 [2021-12-06 18:42:15,105 INFO L226 Difference]: Without dead ends: 845 [2021-12-06 18:42:15,110 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:42:15,113 INFO L933 BasicCegarLoop]: 1656 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, 1656 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 [2021-12-06 18:42:15,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:15,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2021-12-06 18:42:15,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2021-12-06 18:42:15,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.8884934756820877) internal successors, (1592), 844 states have internal predecessors, (1592), 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) [2021-12-06 18:42:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1592 transitions. [2021-12-06 18:42:15,175 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1592 transitions. Word has length 34 [2021-12-06 18:42:15,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:15,176 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1592 transitions. [2021-12-06 18:42:15,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2021-12-06 18:42:15,176 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1592 transitions. [2021-12-06 18:42:15,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:42:15,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:15,178 INFO L514 BasicCegarLoop]: 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] [2021-12-06 18:42:15,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:42:15,178 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:15,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:15,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1592898568, now seen corresponding path program 1 times [2021-12-06 18:42:15,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:15,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103764207] [2021-12-06 18:42:15,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:15,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:15,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:15,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103764207] [2021-12-06 18:42:15,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103764207] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:15,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:15,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:42:15,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147358947] [2021-12-06 18:42:15,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:15,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:42:15,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:15,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:42:15,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:42:15,247 INFO L87 Difference]: Start difference. First operand 845 states and 1592 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2021-12-06 18:42:15,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:15,389 INFO L93 Difference]: Finished difference Result 903 states and 1681 transitions. [2021-12-06 18:42:15,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:42:15,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 34 [2021-12-06 18:42:15,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:15,396 INFO L225 Difference]: With dead ends: 903 [2021-12-06 18:42:15,397 INFO L226 Difference]: Without dead ends: 845 [2021-12-06 18:42:15,398 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:42:15,399 INFO L933 BasicCegarLoop]: 1590 mSDtfsCounter, 3 mSDsluCounter, 4736 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6326 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:15,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6326 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:15,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2021-12-06 18:42:15,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2021-12-06 18:42:15,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.8517200474495847) internal successors, (1561), 844 states have internal predecessors, (1561), 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) [2021-12-06 18:42:15,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1561 transitions. [2021-12-06 18:42:15,428 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1561 transitions. Word has length 34 [2021-12-06 18:42:15,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:15,429 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1561 transitions. [2021-12-06 18:42:15,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2021-12-06 18:42:15,429 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1561 transitions. [2021-12-06 18:42:15,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 18:42:15,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:15,432 INFO L514 BasicCegarLoop]: 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] [2021-12-06 18:42:15,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:42:15,433 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:15,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:15,433 INFO L85 PathProgramCache]: Analyzing trace with hash 372994572, now seen corresponding path program 1 times [2021-12-06 18:42:15,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:15,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706104196] [2021-12-06 18:42:15,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:15,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:15,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:15,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706104196] [2021-12-06 18:42:15,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706104196] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:15,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:15,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:42:15,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446640223] [2021-12-06 18:42:15,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:15,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:42:15,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:15,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:42:15,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:42:15,510 INFO L87 Difference]: Start difference. First operand 845 states and 1561 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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) [2021-12-06 18:42:18,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:18,145 INFO L93 Difference]: Finished difference Result 2349 states and 4434 transitions. [2021-12-06 18:42:18,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:42:18,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 61 [2021-12-06 18:42:18,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:18,153 INFO L225 Difference]: With dead ends: 2349 [2021-12-06 18:42:18,153 INFO L226 Difference]: Without dead ends: 1596 [2021-12-06 18:42:18,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:42:18,156 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 876 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:18,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 199 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-06 18:42:18,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2021-12-06 18:42:18,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2021-12-06 18:42:18,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1594 states have (on average 1.8419071518193224) internal successors, (2936), 1595 states have internal predecessors, (2936), 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) [2021-12-06 18:42:18,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2936 transitions. [2021-12-06 18:42:18,191 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2936 transitions. Word has length 61 [2021-12-06 18:42:18,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:18,192 INFO L470 AbstractCegarLoop]: Abstraction has 1596 states and 2936 transitions. [2021-12-06 18:42:18,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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) [2021-12-06 18:42:18,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2936 transitions. [2021-12-06 18:42:18,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 18:42:18,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:18,194 INFO L514 BasicCegarLoop]: 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] [2021-12-06 18:42:18,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:42:18,195 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:18,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:18,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1337087153, now seen corresponding path program 1 times [2021-12-06 18:42:18,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:18,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892580267] [2021-12-06 18:42:18,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:18,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:18,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:18,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892580267] [2021-12-06 18:42:18,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892580267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:18,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:18,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:42:18,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099832794] [2021-12-06 18:42:18,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:18,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:42:18,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:18,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:42:18,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:42:18,280 INFO L87 Difference]: Start difference. First operand 1596 states and 2936 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-12-06 18:42:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:18,306 INFO L93 Difference]: Finished difference Result 1698 states and 3096 transitions. [2021-12-06 18:42:18,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:42:18,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-12-06 18:42:18,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:18,314 INFO L225 Difference]: With dead ends: 1698 [2021-12-06 18:42:18,315 INFO L226 Difference]: Without dead ends: 1644 [2021-12-06 18:42:18,315 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:42:18,316 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 1498 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1676 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 [2021-12-06 18:42:18,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 1676 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:18,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2021-12-06 18:42:18,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1642. [2021-12-06 18:42:18,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1640 states have (on average 1.8347560975609756) internal successors, (3009), 1641 states have internal predecessors, (3009), 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) [2021-12-06 18:42:18,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 3009 transitions. [2021-12-06 18:42:18,350 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 3009 transitions. Word has length 64 [2021-12-06 18:42:18,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:18,351 INFO L470 AbstractCegarLoop]: Abstraction has 1642 states and 3009 transitions. [2021-12-06 18:42:18,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-12-06 18:42:18,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 3009 transitions. [2021-12-06 18:42:18,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 18:42:18,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:18,352 INFO L514 BasicCegarLoop]: 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] [2021-12-06 18:42:18,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:42:18,352 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:18,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:18,353 INFO L85 PathProgramCache]: Analyzing trace with hash -119101755, now seen corresponding path program 1 times [2021-12-06 18:42:18,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:18,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600402690] [2021-12-06 18:42:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:18,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:18,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:18,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600402690] [2021-12-06 18:42:18,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600402690] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:18,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:18,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:42:18,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378577375] [2021-12-06 18:42:18,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:18,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:42:18,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:18,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:42:18,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:42:18,421 INFO L87 Difference]: Start difference. First operand 1642 states and 3009 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2021-12-06 18:42:18,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:18,620 INFO L93 Difference]: Finished difference Result 2642 states and 4589 transitions. [2021-12-06 18:42:18,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:42:18,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 64 [2021-12-06 18:42:18,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:18,637 INFO L225 Difference]: With dead ends: 2642 [2021-12-06 18:42:18,637 INFO L226 Difference]: Without dead ends: 2542 [2021-12-06 18:42:18,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:42:18,640 INFO L933 BasicCegarLoop]: 1555 mSDtfsCounter, 8419 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8419 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:18,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8419 Valid, 2463 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:42:18,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2021-12-06 18:42:18,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 1740. [2021-12-06 18:42:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1738 states have (on average 1.8193325661680093) internal successors, (3162), 1739 states have internal predecessors, (3162), 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) [2021-12-06 18:42:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 3162 transitions. [2021-12-06 18:42:18,728 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 3162 transitions. Word has length 64 [2021-12-06 18:42:18,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:18,729 INFO L470 AbstractCegarLoop]: Abstraction has 1740 states and 3162 transitions. [2021-12-06 18:42:18,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2021-12-06 18:42:18,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 3162 transitions. [2021-12-06 18:42:18,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 18:42:18,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:18,730 INFO L514 BasicCegarLoop]: 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] [2021-12-06 18:42:18,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:42:18,731 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:18,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:18,732 INFO L85 PathProgramCache]: Analyzing trace with hash 91634997, now seen corresponding path program 1 times [2021-12-06 18:42:18,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:18,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386573614] [2021-12-06 18:42:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:18,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:18,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:18,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386573614] [2021-12-06 18:42:18,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386573614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:18,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:18,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:42:18,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567775939] [2021-12-06 18:42:18,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:18,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:42:18,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:18,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:42:18,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:42:18,793 INFO L87 Difference]: Start difference. First operand 1740 states and 3162 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) [2021-12-06 18:42:18,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:18,834 INFO L93 Difference]: Finished difference Result 2114 states and 3746 transitions. [2021-12-06 18:42:18,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:42:18,835 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 [2021-12-06 18:42:18,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:18,847 INFO L225 Difference]: With dead ends: 2114 [2021-12-06 18:42:18,847 INFO L226 Difference]: Without dead ends: 1916 [2021-12-06 18:42:18,848 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:42:18,849 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1489 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:18,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 1635 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:18,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2021-12-06 18:42:18,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1910. [2021-12-06 18:42:18,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1908 states have (on average 1.7924528301886793) internal successors, (3420), 1909 states have internal predecessors, (3420), 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) [2021-12-06 18:42:18,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 3420 transitions. [2021-12-06 18:42:18,892 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 3420 transitions. Word has length 66 [2021-12-06 18:42:18,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:18,892 INFO L470 AbstractCegarLoop]: Abstraction has 1910 states and 3420 transitions. [2021-12-06 18:42:18,892 INFO L471 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) [2021-12-06 18:42:18,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 3420 transitions. [2021-12-06 18:42:18,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 18:42:18,893 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:18,893 INFO L514 BasicCegarLoop]: 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] [2021-12-06 18:42:18,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:42:18,894 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:18,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:18,894 INFO L85 PathProgramCache]: Analyzing trace with hash 158128509, now seen corresponding path program 1 times [2021-12-06 18:42:18,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:18,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864896468] [2021-12-06 18:42:18,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:18,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:19,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:19,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:19,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864896468] [2021-12-06 18:42:19,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864896468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:19,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:19,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:42:19,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748125530] [2021-12-06 18:42:19,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:19,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:42:19,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:19,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:42:19,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:42:19,019 INFO L87 Difference]: Start difference. First operand 1910 states and 3420 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2021-12-06 18:42:19,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:19,163 INFO L93 Difference]: Finished difference Result 2280 states and 3990 transitions. [2021-12-06 18:42:19,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:42:19,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 [2021-12-06 18:42:19,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:19,176 INFO L225 Difference]: With dead ends: 2280 [2021-12-06 18:42:19,176 INFO L226 Difference]: Without dead ends: 1912 [2021-12-06 18:42:19,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:42:19,178 INFO L933 BasicCegarLoop]: 1568 mSDtfsCounter, 7649 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7649 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:19,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7649 Valid, 1893 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:19,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2021-12-06 18:42:19,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1910. [2021-12-06 18:42:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1908 states have (on average 1.790356394129979) internal successors, (3416), 1909 states have internal predecessors, (3416), 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) [2021-12-06 18:42:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 3416 transitions. [2021-12-06 18:42:19,234 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 3416 transitions. Word has length 66 [2021-12-06 18:42:19,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:19,235 INFO L470 AbstractCegarLoop]: Abstraction has 1910 states and 3416 transitions. [2021-12-06 18:42:19,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2021-12-06 18:42:19,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 3416 transitions. [2021-12-06 18:42:19,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 18:42:19,236 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:19,236 INFO L514 BasicCegarLoop]: 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] [2021-12-06 18:42:19,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 18:42:19,237 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:19,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:19,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1100417095, now seen corresponding path program 1 times [2021-12-06 18:42:19,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:19,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821466383] [2021-12-06 18:42:19,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:19,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:19,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:19,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821466383] [2021-12-06 18:42:19,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821466383] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:19,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:19,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:42:19,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688665853] [2021-12-06 18:42:19,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:19,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:42:19,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:19,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:42:19,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:42:19,269 INFO L87 Difference]: Start difference. First operand 1910 states and 3416 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) [2021-12-06 18:42:19,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:19,300 INFO L93 Difference]: Finished difference Result 2598 states and 4466 transitions. [2021-12-06 18:42:19,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:42:19,300 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 [2021-12-06 18:42:19,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:19,310 INFO L225 Difference]: With dead ends: 2598 [2021-12-06 18:42:19,310 INFO L226 Difference]: Without dead ends: 2230 [2021-12-06 18:42:19,311 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:42:19,312 INFO L933 BasicCegarLoop]: 1591 mSDtfsCounter, 1502 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1686 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 [2021-12-06 18:42:19,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 1686 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:19,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2021-12-06 18:42:19,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2228. [2021-12-06 18:42:19,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2226 states have (on average 1.748427672955975) internal successors, (3892), 2227 states have internal predecessors, (3892), 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) [2021-12-06 18:42:19,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3892 transitions. [2021-12-06 18:42:19,361 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3892 transitions. Word has length 66 [2021-12-06 18:42:19,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:19,361 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 3892 transitions. [2021-12-06 18:42:19,361 INFO L471 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) [2021-12-06 18:42:19,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3892 transitions. [2021-12-06 18:42:19,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 18:42:19,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:19,362 INFO L514 BasicCegarLoop]: 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] [2021-12-06 18:42:19,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 18:42:19,362 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:19,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:19,363 INFO L85 PathProgramCache]: Analyzing trace with hash -826729383, now seen corresponding path program 1 times [2021-12-06 18:42:19,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:19,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336494109] [2021-12-06 18:42:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:19,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:19,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:19,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336494109] [2021-12-06 18:42:19,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336494109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:19,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:19,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:42:19,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134191740] [2021-12-06 18:42:19,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:19,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:42:19,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:19,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:42:19,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:42:19,393 INFO L87 Difference]: Start difference. First operand 2228 states and 3892 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) [2021-12-06 18:42:19,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:19,439 INFO L93 Difference]: Finished difference Result 3504 states and 5814 transitions. [2021-12-06 18:42:19,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:42:19,440 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 [2021-12-06 18:42:19,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:19,452 INFO L225 Difference]: With dead ends: 3504 [2021-12-06 18:42:19,452 INFO L226 Difference]: Without dead ends: 2818 [2021-12-06 18:42:19,454 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:42:19,454 INFO L933 BasicCegarLoop]: 1604 mSDtfsCounter, 1506 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1695 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 [2021-12-06 18:42:19,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1506 Valid, 1695 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:19,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2021-12-06 18:42:19,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2816. [2021-12-06 18:42:19,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2816 states, 2814 states have (on average 1.6901208244491828) internal successors, (4756), 2815 states have internal predecessors, (4756), 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) [2021-12-06 18:42:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2816 states to 2816 states and 4756 transitions. [2021-12-06 18:42:19,560 INFO L78 Accepts]: Start accepts. Automaton has 2816 states and 4756 transitions. Word has length 66 [2021-12-06 18:42:19,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:19,561 INFO L470 AbstractCegarLoop]: Abstraction has 2816 states and 4756 transitions. [2021-12-06 18:42:19,561 INFO L471 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) [2021-12-06 18:42:19,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2816 states and 4756 transitions. [2021-12-06 18:42:19,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 18:42:19,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:19,562 INFO L514 BasicCegarLoop]: 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] [2021-12-06 18:42:19,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 18:42:19,563 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:19,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:19,563 INFO L85 PathProgramCache]: Analyzing trace with hash 992342265, now seen corresponding path program 1 times [2021-12-06 18:42:19,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:19,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874142805] [2021-12-06 18:42:19,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:19,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:19,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:19,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874142805] [2021-12-06 18:42:19,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874142805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:19,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:19,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:42:19,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117081745] [2021-12-06 18:42:19,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:19,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:42:19,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:19,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:42:19,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:42:19,607 INFO L87 Difference]: Start difference. First operand 2816 states and 4756 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) [2021-12-06 18:42:19,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:19,740 INFO L93 Difference]: Finished difference Result 5172 states and 8246 transitions. [2021-12-06 18:42:19,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:42:19,741 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 [2021-12-06 18:42:19,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:19,763 INFO L225 Difference]: With dead ends: 5172 [2021-12-06 18:42:19,763 INFO L226 Difference]: Without dead ends: 3898 [2021-12-06 18:42:19,766 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:42:19,767 INFO L933 BasicCegarLoop]: 1617 mSDtfsCounter, 1510 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1704 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 [2021-12-06 18:42:19,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1510 Valid, 1704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:19,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2021-12-06 18:42:19,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 3896. [2021-12-06 18:42:19,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3896 states, 3894 states have (on average 1.6199280945043657) internal successors, (6308), 3895 states have internal predecessors, (6308), 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) [2021-12-06 18:42:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 6308 transitions. [2021-12-06 18:42:19,951 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 6308 transitions. Word has length 66 [2021-12-06 18:42:19,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:19,952 INFO L470 AbstractCegarLoop]: Abstraction has 3896 states and 6308 transitions. [2021-12-06 18:42:19,952 INFO L471 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) [2021-12-06 18:42:19,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 6308 transitions. [2021-12-06 18:42:19,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 18:42:19,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:19,953 INFO L514 BasicCegarLoop]: 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] [2021-12-06 18:42:19,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 18:42:19,954 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:19,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:19,954 INFO L85 PathProgramCache]: Analyzing trace with hash 192293446, now seen corresponding path program 1 times [2021-12-06 18:42:19,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:19,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768605820] [2021-12-06 18:42:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:19,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:20,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:20,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:20,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768605820] [2021-12-06 18:42:20,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768605820] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:20,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:20,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:42:20,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019264691] [2021-12-06 18:42:20,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:20,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:42:20,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:20,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:42:20,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:42:20,025 INFO L87 Difference]: Start difference. First operand 3896 states and 6308 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-12-06 18:42:20,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:20,268 INFO L93 Difference]: Finished difference Result 5654 states and 8842 transitions. [2021-12-06 18:42:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:42:20,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2021-12-06 18:42:20,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:20,293 INFO L225 Difference]: With dead ends: 5654 [2021-12-06 18:42:20,293 INFO L226 Difference]: Without dead ends: 5652 [2021-12-06 18:42:20,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:42:20,296 INFO L933 BasicCegarLoop]: 1606 mSDtfsCounter, 225 mSDsluCounter, 4685 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 6291 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:20,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 6291 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2021-12-06 18:42:20,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 3992. [2021-12-06 18:42:20,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3990 states have (on average 1.601002506265664) internal successors, (6388), 3991 states have internal predecessors, (6388), 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) [2021-12-06 18:42:20,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 6388 transitions. [2021-12-06 18:42:20,450 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 6388 transitions. Word has length 67 [2021-12-06 18:42:20,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:20,451 INFO L470 AbstractCegarLoop]: Abstraction has 3992 states and 6388 transitions. [2021-12-06 18:42:20,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-12-06 18:42:20,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 6388 transitions. [2021-12-06 18:42:20,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 18:42:20,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:20,452 INFO L514 BasicCegarLoop]: 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] [2021-12-06 18:42:20,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 18:42:20,452 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:20,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:20,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1338319212, now seen corresponding path program 1 times [2021-12-06 18:42:20,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:20,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416877992] [2021-12-06 18:42:20,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:20,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:20,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:20,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416877992] [2021-12-06 18:42:20,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416877992] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:20,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:20,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:42:20,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898449239] [2021-12-06 18:42:20,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:20,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:42:20,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:20,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:42:20,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:42:20,480 INFO L87 Difference]: Start difference. First operand 3992 states and 6388 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) [2021-12-06 18:42:20,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:20,614 INFO L93 Difference]: Finished difference Result 6495 states and 10042 transitions. [2021-12-06 18:42:20,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:42:20,614 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 [2021-12-06 18:42:20,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:20,622 INFO L225 Difference]: With dead ends: 6495 [2021-12-06 18:42:20,622 INFO L226 Difference]: Without dead ends: 5116 [2021-12-06 18:42:20,624 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:42:20,624 INFO L933 BasicCegarLoop]: 1625 mSDtfsCounter, 1511 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1708 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 [2021-12-06 18:42:20,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 1708 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:20,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2021-12-06 18:42:20,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 5114. [2021-12-06 18:42:20,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5114 states, 5112 states have (on average 1.5598591549295775) internal successors, (7974), 5113 states have internal predecessors, (7974), 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) [2021-12-06 18:42:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 7974 transitions. [2021-12-06 18:42:20,775 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 7974 transitions. Word has length 68 [2021-12-06 18:42:20,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:20,775 INFO L470 AbstractCegarLoop]: Abstraction has 5114 states and 7974 transitions. [2021-12-06 18:42:20,775 INFO L471 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) [2021-12-06 18:42:20,775 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 7974 transitions. [2021-12-06 18:42:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 18:42:20,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:20,778 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:42:20,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 18:42:20,778 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:20,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:20,778 INFO L85 PathProgramCache]: Analyzing trace with hash -482219864, now seen corresponding path program 1 times [2021-12-06 18:42:20,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:20,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497461769] [2021-12-06 18:42:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:20,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:20,840 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 18:42:20,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:20,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497461769] [2021-12-06 18:42:20,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497461769] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:20,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:20,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:42:20,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404783219] [2021-12-06 18:42:20,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:20,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:42:20,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:20,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:42:20,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:42:20,842 INFO L87 Difference]: Start difference. First operand 5114 states and 7974 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:42:21,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:21,438 INFO L93 Difference]: Finished difference Result 23686 states and 34572 transitions. [2021-12-06 18:42:21,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:42:21,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-06 18:42:21,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:21,466 INFO L225 Difference]: With dead ends: 23686 [2021-12-06 18:42:21,466 INFO L226 Difference]: Without dead ends: 20116 [2021-12-06 18:42:21,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:42:21,473 INFO L933 BasicCegarLoop]: 1635 mSDtfsCounter, 6643 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6643 SdHoareTripleChecker+Valid, 3571 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:21,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6643 Valid, 3571 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:21,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20116 states. [2021-12-06 18:42:21,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20116 to 8682. [2021-12-06 18:42:21,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8682 states, 8680 states have (on average 1.5029953917050691) internal successors, (13046), 8681 states have internal predecessors, (13046), 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) [2021-12-06 18:42:21,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8682 states to 8682 states and 13046 transitions. [2021-12-06 18:42:21,797 INFO L78 Accepts]: Start accepts. Automaton has 8682 states and 13046 transitions. Word has length 95 [2021-12-06 18:42:21,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:21,797 INFO L470 AbstractCegarLoop]: Abstraction has 8682 states and 13046 transitions. [2021-12-06 18:42:21,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:42:21,798 INFO L276 IsEmpty]: Start isEmpty. Operand 8682 states and 13046 transitions. [2021-12-06 18:42:21,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 18:42:21,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:21,800 INFO L514 BasicCegarLoop]: 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] [2021-12-06 18:42:21,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 18:42:21,800 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:21,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:21,801 INFO L85 PathProgramCache]: Analyzing trace with hash -452697646, now seen corresponding path program 1 times [2021-12-06 18:42:21,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:21,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929444062] [2021-12-06 18:42:21,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:21,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 18:42:21,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:21,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929444062] [2021-12-06 18:42:21,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929444062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:21,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:21,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:42:21,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138083207] [2021-12-06 18:42:21,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:21,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:42:21,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:21,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:42:21,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:42:21,858 INFO L87 Difference]: Start difference. First operand 8682 states and 13046 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:42:22,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:22,565 INFO L93 Difference]: Finished difference Result 27254 states and 39644 transitions. [2021-12-06 18:42:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:42:22,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-06 18:42:22,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:22,594 INFO L225 Difference]: With dead ends: 27254 [2021-12-06 18:42:22,594 INFO L226 Difference]: Without dead ends: 23684 [2021-12-06 18:42:22,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:42:22,602 INFO L933 BasicCegarLoop]: 1637 mSDtfsCounter, 6531 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6531 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:22,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6531 Valid, 3625 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:22,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23684 states. [2021-12-06 18:42:23,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23684 to 14042. [2021-12-06 18:42:23,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14042 states, 14040 states have (on average 1.4682336182336182) internal successors, (20614), 14041 states have internal predecessors, (20614), 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) [2021-12-06 18:42:23,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14042 states to 14042 states and 20614 transitions. [2021-12-06 18:42:23,197 INFO L78 Accepts]: Start accepts. Automaton has 14042 states and 20614 transitions. Word has length 95 [2021-12-06 18:42:23,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:23,197 INFO L470 AbstractCegarLoop]: Abstraction has 14042 states and 20614 transitions. [2021-12-06 18:42:23,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:42:23,197 INFO L276 IsEmpty]: Start isEmpty. Operand 14042 states and 20614 transitions. [2021-12-06 18:42:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 18:42:23,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:23,201 INFO L514 BasicCegarLoop]: 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] [2021-12-06 18:42:23,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 18:42:23,202 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash -179009934, now seen corresponding path program 1 times [2021-12-06 18:42:23,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:23,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973309418] [2021-12-06 18:42:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:23,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 18:42:23,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:23,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973309418] [2021-12-06 18:42:23,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973309418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:23,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:23,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:42:23,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515983752] [2021-12-06 18:42:23,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:23,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:42:23,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:23,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:42:23,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:42:23,273 INFO L87 Difference]: Start difference. First operand 14042 states and 20614 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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) [2021-12-06 18:42:24,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:24,148 INFO L93 Difference]: Finished difference Result 30822 states and 44716 transitions. [2021-12-06 18:42:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:42:24,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 95 [2021-12-06 18:42:24,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:24,172 INFO L225 Difference]: With dead ends: 30822 [2021-12-06 18:42:24,172 INFO L226 Difference]: Without dead ends: 27252 [2021-12-06 18:42:24,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:42:24,179 INFO L933 BasicCegarLoop]: 1637 mSDtfsCounter, 6541 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6541 SdHoareTripleChecker+Valid, 3657 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:24,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6541 Valid, 3657 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:24,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27252 states. [2021-12-06 18:42:24,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27252 to 17610. [2021-12-06 18:42:24,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17610 states, 17608 states have (on average 1.458768741481145) internal successors, (25686), 17609 states have internal predecessors, (25686), 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) [2021-12-06 18:42:24,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17610 states to 17610 states and 25686 transitions. [2021-12-06 18:42:24,866 INFO L78 Accepts]: Start accepts. Automaton has 17610 states and 25686 transitions. Word has length 95 [2021-12-06 18:42:24,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:24,866 INFO L470 AbstractCegarLoop]: Abstraction has 17610 states and 25686 transitions. [2021-12-06 18:42:24,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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) [2021-12-06 18:42:24,867 INFO L276 IsEmpty]: Start isEmpty. Operand 17610 states and 25686 transitions. [2021-12-06 18:42:24,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 18:42:24,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:24,870 INFO L514 BasicCegarLoop]: 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] [2021-12-06 18:42:24,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 18:42:24,870 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:24,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:24,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1640061714, now seen corresponding path program 1 times [2021-12-06 18:42:24,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:24,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938494542] [2021-12-06 18:42:24,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:24,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:24,922 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:42:24,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:24,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938494542] [2021-12-06 18:42:24,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938494542] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:24,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:24,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:42:24,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880676219] [2021-12-06 18:42:24,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:24,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:42:24,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:24,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:42:24,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:42:24,923 INFO L87 Difference]: Start difference. First operand 17610 states and 25686 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2021-12-06 18:42:26,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:26,085 INFO L93 Difference]: Finished difference Result 34390 states and 49788 transitions. [2021-12-06 18:42:26,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:42:26,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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 95 [2021-12-06 18:42:26,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:26,111 INFO L225 Difference]: With dead ends: 34390 [2021-12-06 18:42:26,112 INFO L226 Difference]: Without dead ends: 30820 [2021-12-06 18:42:26,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:42:26,120 INFO L933 BasicCegarLoop]: 1635 mSDtfsCounter, 6608 mSDsluCounter, 2005 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6608 SdHoareTripleChecker+Valid, 3640 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:26,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6608 Valid, 3640 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:42:26,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30820 states. [2021-12-06 18:42:26,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30820 to 21178. [2021-12-06 18:42:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21178 states, 21176 states have (on average 1.452493388741972) internal successors, (30758), 21177 states have internal predecessors, (30758), 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) [2021-12-06 18:42:26,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21178 states to 21178 states and 30758 transitions. [2021-12-06 18:42:26,974 INFO L78 Accepts]: Start accepts. Automaton has 21178 states and 30758 transitions. Word has length 95 [2021-12-06 18:42:26,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:26,974 INFO L470 AbstractCegarLoop]: Abstraction has 21178 states and 30758 transitions. [2021-12-06 18:42:26,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2021-12-06 18:42:26,975 INFO L276 IsEmpty]: Start isEmpty. Operand 21178 states and 30758 transitions. [2021-12-06 18:42:26,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-06 18:42:26,978 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:26,978 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:42:26,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 18:42:26,978 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:26,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:26,979 INFO L85 PathProgramCache]: Analyzing trace with hash -906023264, now seen corresponding path program 1 times [2021-12-06 18:42:26,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:26,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538014016] [2021-12-06 18:42:26,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:26,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:27,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:27,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538014016] [2021-12-06 18:42:27,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538014016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:27,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:27,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:42:27,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894456184] [2021-12-06 18:42:27,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:27,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:42:27,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:27,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:42:27,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:42:27,015 INFO L87 Difference]: Start difference. First operand 21178 states and 30758 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-12-06 18:42:27,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:27,559 INFO L93 Difference]: Finished difference Result 34940 states and 50508 transitions. [2021-12-06 18:42:27,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:42:27,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 97 [2021-12-06 18:42:27,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:27,574 INFO L225 Difference]: With dead ends: 34940 [2021-12-06 18:42:27,574 INFO L226 Difference]: Without dead ends: 15306 [2021-12-06 18:42:27,590 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:42:27,591 INFO L933 BasicCegarLoop]: 1601 mSDtfsCounter, 54 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:27,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 3146 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:27,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15306 states. [2021-12-06 18:42:28,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15306 to 15304. [2021-12-06 18:42:28,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15304 states, 15302 states have (on average 1.465494706574304) internal successors, (22425), 15303 states have internal predecessors, (22425), 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) [2021-12-06 18:42:28,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15304 states to 15304 states and 22425 transitions. [2021-12-06 18:42:28,358 INFO L78 Accepts]: Start accepts. Automaton has 15304 states and 22425 transitions. Word has length 97 [2021-12-06 18:42:28,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:28,359 INFO L470 AbstractCegarLoop]: Abstraction has 15304 states and 22425 transitions. [2021-12-06 18:42:28,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-12-06 18:42:28,359 INFO L276 IsEmpty]: Start isEmpty. Operand 15304 states and 22425 transitions. [2021-12-06 18:42:28,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-06 18:42:28,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:28,362 INFO L514 BasicCegarLoop]: 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] [2021-12-06 18:42:28,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 18:42:28,362 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:28,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:28,362 INFO L85 PathProgramCache]: Analyzing trace with hash -615309075, now seen corresponding path program 1 times [2021-12-06 18:42:28,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:28,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142806346] [2021-12-06 18:42:28,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:28,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 18:42:28,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:28,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142806346] [2021-12-06 18:42:28,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142806346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:28,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:28,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:42:28,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342242357] [2021-12-06 18:42:28,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:28,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:42:28,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:28,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:42:28,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:42:28,419 INFO L87 Difference]: Start difference. First operand 15304 states and 22425 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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) [2021-12-06 18:42:29,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:29,434 INFO L93 Difference]: Finished difference Result 27796 states and 40351 transitions. [2021-12-06 18:42:29,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:42:29,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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 97 [2021-12-06 18:42:29,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:29,457 INFO L225 Difference]: With dead ends: 27796 [2021-12-06 18:42:29,457 INFO L226 Difference]: Without dead ends: 25298 [2021-12-06 18:42:29,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:42:29,465 INFO L933 BasicCegarLoop]: 1634 mSDtfsCounter, 6590 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6590 SdHoareTripleChecker+Valid, 3594 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:29,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6590 Valid, 3594 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:29,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25298 states. [2021-12-06 18:42:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25298 to 17800. [2021-12-06 18:42:30,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17800 states, 17798 states have (on average 1.4595460164063379) internal successors, (25977), 17799 states have internal predecessors, (25977), 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) [2021-12-06 18:42:30,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17800 states to 17800 states and 25977 transitions. [2021-12-06 18:42:30,240 INFO L78 Accepts]: Start accepts. Automaton has 17800 states and 25977 transitions. Word has length 97 [2021-12-06 18:42:30,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:30,240 INFO L470 AbstractCegarLoop]: Abstraction has 17800 states and 25977 transitions. [2021-12-06 18:42:30,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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) [2021-12-06 18:42:30,240 INFO L276 IsEmpty]: Start isEmpty. Operand 17800 states and 25977 transitions. [2021-12-06 18:42:30,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 18:42:30,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:30,243 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:42:30,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 18:42:30,243 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:30,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:30,243 INFO L85 PathProgramCache]: Analyzing trace with hash -605888281, now seen corresponding path program 1 times [2021-12-06 18:42:30,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:30,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635491894] [2021-12-06 18:42:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:30,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:30,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:30,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635491894] [2021-12-06 18:42:30,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635491894] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:30,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:30,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:42:30,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557125226] [2021-12-06 18:42:30,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:30,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:42:30,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:30,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:42:30,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:42:30,277 INFO L87 Difference]: Start difference. First operand 17800 states and 25977 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-12-06 18:42:30,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:30,660 INFO L93 Difference]: Finished difference Result 25916 states and 37523 transitions. [2021-12-06 18:42:30,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:42:30,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 98 [2021-12-06 18:42:30,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:30,667 INFO L225 Difference]: With dead ends: 25916 [2021-12-06 18:42:30,667 INFO L226 Difference]: Without dead ends: 9690 [2021-12-06 18:42:30,676 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:42:30,676 INFO L933 BasicCegarLoop]: 1594 mSDtfsCounter, 48 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:30,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 3131 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:30,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9690 states. [2021-12-06 18:42:31,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9690 to 9688. [2021-12-06 18:42:31,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9688 states, 9686 states have (on average 1.4793516415444972) internal successors, (14329), 9687 states have internal predecessors, (14329), 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) [2021-12-06 18:42:31,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9688 states to 9688 states and 14329 transitions. [2021-12-06 18:42:31,040 INFO L78 Accepts]: Start accepts. Automaton has 9688 states and 14329 transitions. Word has length 98 [2021-12-06 18:42:31,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:31,040 INFO L470 AbstractCegarLoop]: Abstraction has 9688 states and 14329 transitions. [2021-12-06 18:42:31,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-12-06 18:42:31,040 INFO L276 IsEmpty]: Start isEmpty. Operand 9688 states and 14329 transitions. [2021-12-06 18:42:31,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 18:42:31,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:31,042 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 18:42:31,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 18:42:31,042 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:31,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:31,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1773467421, now seen corresponding path program 1 times [2021-12-06 18:42:31,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:31,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353296841] [2021-12-06 18:42:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:31,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:31,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:31,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353296841] [2021-12-06 18:42:31,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353296841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:31,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:31,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:42:31,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534620924] [2021-12-06 18:42:31,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:31,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:42:31,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:31,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:42:31,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:42:31,074 INFO L87 Difference]: Start difference. First operand 9688 states and 14329 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-12-06 18:42:31,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:31,263 INFO L93 Difference]: Finished difference Result 13748 states and 20051 transitions. [2021-12-06 18:42:31,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:42:31,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 98 [2021-12-06 18:42:31,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:31,268 INFO L225 Difference]: With dead ends: 13748 [2021-12-06 18:42:31,268 INFO L226 Difference]: Without dead ends: 5634 [2021-12-06 18:42:31,274 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:42:31,274 INFO L933 BasicCegarLoop]: 1587 mSDtfsCounter, 44 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:31,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 3116 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:31,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5634 states. [2021-12-06 18:42:31,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5634 to 5632. [2021-12-06 18:42:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5632 states, 5630 states have (on average 1.5198934280639431) internal successors, (8557), 5631 states have internal predecessors, (8557), 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) [2021-12-06 18:42:31,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5632 states to 5632 states and 8557 transitions. [2021-12-06 18:42:31,469 INFO L78 Accepts]: Start accepts. Automaton has 5632 states and 8557 transitions. Word has length 98 [2021-12-06 18:42:31,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:31,469 INFO L470 AbstractCegarLoop]: Abstraction has 5632 states and 8557 transitions. [2021-12-06 18:42:31,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-12-06 18:42:31,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5632 states and 8557 transitions. [2021-12-06 18:42:31,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 18:42:31,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:31,471 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:42:31,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 18:42:31,471 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:31,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:31,471 INFO L85 PathProgramCache]: Analyzing trace with hash -934897581, now seen corresponding path program 1 times [2021-12-06 18:42:31,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:31,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103752125] [2021-12-06 18:42:31,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:31,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:31,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:31,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103752125] [2021-12-06 18:42:31,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103752125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:42:31,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:42:31,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:42:31,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773920718] [2021-12-06 18:42:31,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:42:31,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:42:31,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:31,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:42:31,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:42:31,501 INFO L87 Difference]: Start difference. First operand 5632 states and 8557 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-12-06 18:42:31,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:31,662 INFO L93 Difference]: Finished difference Result 7664 states and 11393 transitions. [2021-12-06 18:42:31,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:42:31,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 98 [2021-12-06 18:42:31,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:31,666 INFO L225 Difference]: With dead ends: 7664 [2021-12-06 18:42:31,667 INFO L226 Difference]: Without dead ends: 3606 [2021-12-06 18:42:31,669 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:42:31,670 INFO L933 BasicCegarLoop]: 1580 mSDtfsCounter, 40 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:31,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 3101 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:42:31,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2021-12-06 18:42:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 3604. [2021-12-06 18:42:31,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3604 states, 3602 states have (on average 1.5816213214880621) internal successors, (5697), 3603 states have internal predecessors, (5697), 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) [2021-12-06 18:42:31,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3604 states to 3604 states and 5697 transitions. [2021-12-06 18:42:31,825 INFO L78 Accepts]: Start accepts. Automaton has 3604 states and 5697 transitions. Word has length 98 [2021-12-06 18:42:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:31,825 INFO L470 AbstractCegarLoop]: Abstraction has 3604 states and 5697 transitions. [2021-12-06 18:42:31,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-12-06 18:42:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3604 states and 5697 transitions. [2021-12-06 18:42:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 18:42:31,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:31,827 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:42:31,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 18:42:31,827 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:31,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:31,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1022016375, now seen corresponding path program 1 times [2021-12-06 18:42:31,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:31,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468932786] [2021-12-06 18:42:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:31,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:32,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:32,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468932786] [2021-12-06 18:42:32,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468932786] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:42:32,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408660611] [2021-12-06 18:42:32,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:32,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:42:32,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:42:32,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:42:32,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:42:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:32,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:42:32,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:42:32,474 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 18:42:32,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:42:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 18:42:32,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408660611] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:42:32,666 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:42:32,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2021-12-06 18:42:32,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632566845] [2021-12-06 18:42:32,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:42:32,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 18:42:32,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:32,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 18:42:32,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:42:32,668 INFO L87 Difference]: Start difference. First operand 3604 states and 5697 transitions. Second operand has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 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) [2021-12-06 18:42:36,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:36,109 INFO L93 Difference]: Finished difference Result 28780 states and 39881 transitions. [2021-12-06 18:42:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-12-06 18:42:36,109 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 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 98 [2021-12-06 18:42:36,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:36,130 INFO L225 Difference]: With dead ends: 28780 [2021-12-06 18:42:36,131 INFO L226 Difference]: Without dead ends: 26750 [2021-12-06 18:42:36,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2225 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1175, Invalid=5467, Unknown=0, NotChecked=0, Total=6642 [2021-12-06 18:42:36,138 INFO L933 BasicCegarLoop]: 1574 mSDtfsCounter, 19253 mSDsluCounter, 5442 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19253 SdHoareTripleChecker+Valid, 7016 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:36,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19253 Valid, 7016 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 18:42:36,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26750 states. [2021-12-06 18:42:37,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26750 to 18851. [2021-12-06 18:42:37,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18851 states, 18849 states have (on average 1.3678179213751394) internal successors, (25782), 18850 states have internal predecessors, (25782), 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) [2021-12-06 18:42:37,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18851 states to 18851 states and 25782 transitions. [2021-12-06 18:42:37,140 INFO L78 Accepts]: Start accepts. Automaton has 18851 states and 25782 transitions. Word has length 98 [2021-12-06 18:42:37,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:42:37,140 INFO L470 AbstractCegarLoop]: Abstraction has 18851 states and 25782 transitions. [2021-12-06 18:42:37,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 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) [2021-12-06 18:42:37,140 INFO L276 IsEmpty]: Start isEmpty. Operand 18851 states and 25782 transitions. [2021-12-06 18:42:37,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 18:42:37,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:42:37,141 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:42:37,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:42:37,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:42:37,343 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:42:37,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:42:37,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1244176043, now seen corresponding path program 1 times [2021-12-06 18:42:37,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:42:37,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238112899] [2021-12-06 18:42:37,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:37,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:42:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:37,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:42:37,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238112899] [2021-12-06 18:42:37,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238112899] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:42:37,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139966085] [2021-12-06 18:42:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:42:37,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:42:37,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:42:37,545 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:42:37,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:42:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:42:37,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 18:42:37,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:42:38,089 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:38,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:42:38,702 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:42:38,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139966085] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:42:38,702 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:42:38,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2021-12-06 18:42:38,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751021821] [2021-12-06 18:42:38,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:42:38,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 18:42:38,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:42:38,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 18:42:38,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2021-12-06 18:42:38,704 INFO L87 Difference]: Start difference. First operand 18851 states and 25782 transitions. Second operand has 30 states, 30 states have (on average 8.433333333333334) internal successors, (253), 29 states have internal predecessors, (253), 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) [2021-12-06 18:42:57,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:42:57,613 INFO L93 Difference]: Finished difference Result 230204 states and 301478 transitions. [2021-12-06 18:42:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-12-06 18:42:57,614 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.433333333333334) internal successors, (253), 29 states have internal predecessors, (253), 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 99 [2021-12-06 18:42:57,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:42:57,896 INFO L225 Difference]: With dead ends: 230204 [2021-12-06 18:42:57,896 INFO L226 Difference]: Without dead ends: 213205 [2021-12-06 18:42:57,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8067 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3510, Invalid=19140, Unknown=0, NotChecked=0, Total=22650 [2021-12-06 18:42:57,947 INFO L933 BasicCegarLoop]: 1640 mSDtfsCounter, 25357 mSDsluCounter, 10614 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25357 SdHoareTripleChecker+Valid, 12254 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:42:57,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25357 Valid, 12254 Invalid, 2326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 18:42:58,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213205 states. [2021-12-06 18:43:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213205 to 95918. [2021-12-06 18:43:05,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95918 states, 95916 states have (on average 1.305225405563201) internal successors, (125192), 95917 states have internal predecessors, (125192), 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) [2021-12-06 18:43:05,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95918 states to 95918 states and 125192 transitions. [2021-12-06 18:43:05,320 INFO L78 Accepts]: Start accepts. Automaton has 95918 states and 125192 transitions. Word has length 99 [2021-12-06 18:43:05,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:43:05,320 INFO L470 AbstractCegarLoop]: Abstraction has 95918 states and 125192 transitions. [2021-12-06 18:43:05,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.433333333333334) internal successors, (253), 29 states have internal predecessors, (253), 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) [2021-12-06 18:43:05,320 INFO L276 IsEmpty]: Start isEmpty. Operand 95918 states and 125192 transitions. [2021-12-06 18:43:05,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 18:43:05,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:43:05,323 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:43:05,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 18:43:05,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:43:05,525 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:43:05,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:43:05,527 INFO L85 PathProgramCache]: Analyzing trace with hash -276405577, now seen corresponding path program 1 times [2021-12-06 18:43:05,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:43:05,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325767757] [2021-12-06 18:43:05,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:43:05,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:43:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 18:43:05,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:43:05,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325767757] [2021-12-06 18:43:05,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325767757] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:43:05,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:43:05,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:43:05,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797885721] [2021-12-06 18:43:05,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:43:05,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:43:05,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:43:05,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:43:05,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:43:05,582 INFO L87 Difference]: Start difference. First operand 95918 states and 125192 transitions. Second operand has 6 states, 6 states have (on average 16.0) 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) [2021-12-06 18:43:11,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:43:11,978 INFO L93 Difference]: Finished difference Result 183353 states and 239367 transitions. [2021-12-06 18:43:11,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:43:11,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) 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 99 [2021-12-06 18:43:11,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:43:12,070 INFO L225 Difference]: With dead ends: 183353 [2021-12-06 18:43:12,070 INFO L226 Difference]: Without dead ends: 89084 [2021-12-06 18:43:12,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:43:12,112 INFO L933 BasicCegarLoop]: 1520 mSDtfsCounter, 4663 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4663 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:43:12,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4663 Valid, 3005 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:43:12,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89084 states. [2021-12-06 18:43:18,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89084 to 89084. [2021-12-06 18:43:18,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89084 states, 89082 states have (on average 1.3013066612783728) internal successors, (115923), 89083 states have internal predecessors, (115923), 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) [2021-12-06 18:43:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89084 states to 89084 states and 115923 transitions. [2021-12-06 18:43:18,827 INFO L78 Accepts]: Start accepts. Automaton has 89084 states and 115923 transitions. Word has length 99 [2021-12-06 18:43:18,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:43:18,827 INFO L470 AbstractCegarLoop]: Abstraction has 89084 states and 115923 transitions. [2021-12-06 18:43:18,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) 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) [2021-12-06 18:43:18,827 INFO L276 IsEmpty]: Start isEmpty. Operand 89084 states and 115923 transitions. [2021-12-06 18:43:18,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 18:43:18,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:43:18,829 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:43:18,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 18:43:18,829 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:43:18,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:43:18,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1918247657, now seen corresponding path program 1 times [2021-12-06 18:43:18,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:43:18,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270274660] [2021-12-06 18:43:18,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:43:18,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:43:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 18:43:18,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:43:18,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270274660] [2021-12-06 18:43:18,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270274660] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:43:18,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:43:18,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:43:18,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657058143] [2021-12-06 18:43:18,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:43:18,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:43:18,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:43:18,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:43:18,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:43:18,870 INFO L87 Difference]: Start difference. First operand 89084 states and 115923 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 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) [2021-12-06 18:43:23,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:43:23,994 INFO L93 Difference]: Finished difference Result 154386 states and 200114 transitions. [2021-12-06 18:43:23,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:43:23,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 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 99 [2021-12-06 18:43:23,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:43:24,062 INFO L225 Difference]: With dead ends: 154386 [2021-12-06 18:43:24,062 INFO L226 Difference]: Without dead ends: 67053 [2021-12-06 18:43:24,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:43:24,095 INFO L933 BasicCegarLoop]: 1522 mSDtfsCounter, 4641 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4641 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:43:24,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4641 Valid, 3019 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:43:24,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67053 states. [2021-12-06 18:43:29,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67053 to 67053. [2021-12-06 18:43:29,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67053 states, 67051 states have (on average 1.285364871515712) internal successors, (86185), 67052 states have internal predecessors, (86185), 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) [2021-12-06 18:43:29,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67053 states to 67053 states and 86185 transitions. [2021-12-06 18:43:29,556 INFO L78 Accepts]: Start accepts. Automaton has 67053 states and 86185 transitions. Word has length 99 [2021-12-06 18:43:29,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:43:29,556 INFO L470 AbstractCegarLoop]: Abstraction has 67053 states and 86185 transitions. [2021-12-06 18:43:29,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 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) [2021-12-06 18:43:29,556 INFO L276 IsEmpty]: Start isEmpty. Operand 67053 states and 86185 transitions. [2021-12-06 18:43:29,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 18:43:29,558 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:43:29,558 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:43:29,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 18:43:29,559 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:43:29,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:43:29,559 INFO L85 PathProgramCache]: Analyzing trace with hash 365484023, now seen corresponding path program 1 times [2021-12-06 18:43:29,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:43:29,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250958451] [2021-12-06 18:43:29,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:43:29,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:43:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:29,596 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 18:43:29,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:43:29,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250958451] [2021-12-06 18:43:29,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250958451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:43:29,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:43:29,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:43:29,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121787802] [2021-12-06 18:43:29,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:43:29,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:43:29,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:43:29,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:43:29,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:43:29,597 INFO L87 Difference]: Start difference. First operand 67053 states and 86185 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 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) [2021-12-06 18:43:33,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:43:33,840 INFO L93 Difference]: Finished difference Result 118101 states and 151198 transitions. [2021-12-06 18:43:33,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:43:33,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 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 99 [2021-12-06 18:43:33,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:43:33,901 INFO L225 Difference]: With dead ends: 118101 [2021-12-06 18:43:33,901 INFO L226 Difference]: Without dead ends: 52662 [2021-12-06 18:43:33,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:43:33,937 INFO L933 BasicCegarLoop]: 1522 mSDtfsCounter, 4647 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4647 SdHoareTripleChecker+Valid, 3013 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:43:33,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4647 Valid, 3013 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:43:33,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52662 states. [2021-12-06 18:43:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52662 to 52662. [2021-12-06 18:43:38,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52662 states, 52660 states have (on average 1.276376756551462) internal successors, (67214), 52661 states have internal predecessors, (67214), 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) [2021-12-06 18:43:38,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52662 states to 52662 states and 67214 transitions. [2021-12-06 18:43:38,309 INFO L78 Accepts]: Start accepts. Automaton has 52662 states and 67214 transitions. Word has length 99 [2021-12-06 18:43:38,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:43:38,310 INFO L470 AbstractCegarLoop]: Abstraction has 52662 states and 67214 transitions. [2021-12-06 18:43:38,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 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) [2021-12-06 18:43:38,310 INFO L276 IsEmpty]: Start isEmpty. Operand 52662 states and 67214 transitions. [2021-12-06 18:43:38,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 18:43:38,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:43:38,312 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:43:38,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 18:43:38,312 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:43:38,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:43:38,312 INFO L85 PathProgramCache]: Analyzing trace with hash 706173160, now seen corresponding path program 1 times [2021-12-06 18:43:38,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:43:38,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928576281] [2021-12-06 18:43:38,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:43:38,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:43:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:43:38,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:43:38,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928576281] [2021-12-06 18:43:38,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928576281] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:43:38,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988883111] [2021-12-06 18:43:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:43:38,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:43:38,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:43:38,494 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:43:38,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:43:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:43:38,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 18:43:38,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:43:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:43:39,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:43:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:43:40,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988883111] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:43:40,401 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:43:40,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2021-12-06 18:43:40,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145110164] [2021-12-06 18:43:40,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:43:40,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 18:43:40,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:43:40,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 18:43:40,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 18:43:40,402 INFO L87 Difference]: Start difference. First operand 52662 states and 67214 transitions. Second operand has 35 states, 35 states have (on average 7.885714285714286) internal successors, (276), 35 states have internal predecessors, (276), 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) [2021-12-06 18:46:15,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:46:15,728 INFO L93 Difference]: Finished difference Result 794405 states and 983253 transitions. [2021-12-06 18:46:15,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 717 states. [2021-12-06 18:46:15,728 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.885714285714286) internal successors, (276), 35 states have internal predecessors, (276), 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 100 [2021-12-06 18:46:15,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:46:16,799 INFO L225 Difference]: With dead ends: 794405 [2021-12-06 18:46:16,800 INFO L226 Difference]: Without dead ends: 746964 [2021-12-06 18:46:16,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 926 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 748 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282696 ImplicationChecksByTransitivity, 68.2s TimeCoverageRelationStatistics Valid=58388, Invalid=503362, Unknown=0, NotChecked=0, Total=561750 [2021-12-06 18:46:16,979 INFO L933 BasicCegarLoop]: 1876 mSDtfsCounter, 40841 mSDsluCounter, 20058 mSDsCounter, 0 mSdLazyCounter, 5132 mSolverCounterSat, 1707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40841 SdHoareTripleChecker+Valid, 21934 SdHoareTripleChecker+Invalid, 6839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1707 IncrementalHoareTripleChecker+Valid, 5132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:46:16,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40841 Valid, 21934 Invalid, 6839 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1707 Valid, 5132 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-06 18:46:17,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746964 states. [2021-12-06 18:46:36,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746964 to 118693. [2021-12-06 18:46:36,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118693 states, 118691 states have (on average 1.2465477584652584) internal successors, (147954), 118692 states have internal predecessors, (147954), 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) [2021-12-06 18:46:36,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118693 states to 118693 states and 147954 transitions. [2021-12-06 18:46:36,786 INFO L78 Accepts]: Start accepts. Automaton has 118693 states and 147954 transitions. Word has length 100 [2021-12-06 18:46:36,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:46:36,786 INFO L470 AbstractCegarLoop]: Abstraction has 118693 states and 147954 transitions. [2021-12-06 18:46:36,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.885714285714286) internal successors, (276), 35 states have internal predecessors, (276), 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) [2021-12-06 18:46:36,786 INFO L276 IsEmpty]: Start isEmpty. Operand 118693 states and 147954 transitions. [2021-12-06 18:46:36,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 18:46:36,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:46:36,788 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:46:36,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 18:46:36,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 18:46:36,990 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:46:36,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:46:36,991 INFO L85 PathProgramCache]: Analyzing trace with hash -929072509, now seen corresponding path program 1 times [2021-12-06 18:46:36,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:46:36,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691599649] [2021-12-06 18:46:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:46:36,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:46:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:46:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 18:46:37,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:46:37,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691599649] [2021-12-06 18:46:37,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691599649] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:46:37,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:46:37,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:46:37,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122487925] [2021-12-06 18:46:37,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:46:37,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:46:37,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:46:37,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:46:37,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:46:37,057 INFO L87 Difference]: Start difference. First operand 118693 states and 147954 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 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) [2021-12-06 18:46:49,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:46:49,582 INFO L93 Difference]: Finished difference Result 211118 states and 263141 transitions. [2021-12-06 18:46:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:46:49,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 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 100 [2021-12-06 18:46:49,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:46:49,687 INFO L225 Difference]: With dead ends: 211118 [2021-12-06 18:46:49,687 INFO L226 Difference]: Without dead ends: 94015 [2021-12-06 18:46:49,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:46:49,737 INFO L933 BasicCegarLoop]: 1522 mSDtfsCounter, 4653 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4653 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:46:49,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4653 Valid, 3007 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:46:49,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94015 states. [2021-12-06 18:47:02,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94015 to 94015. [2021-12-06 18:47:02,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94015 states, 94013 states have (on average 1.2424983778839096) internal successors, (116811), 94014 states have internal predecessors, (116811), 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) [2021-12-06 18:47:02,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94015 states to 94015 states and 116811 transitions. [2021-12-06 18:47:02,273 INFO L78 Accepts]: Start accepts. Automaton has 94015 states and 116811 transitions. Word has length 100 [2021-12-06 18:47:02,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:47:02,274 INFO L470 AbstractCegarLoop]: Abstraction has 94015 states and 116811 transitions. [2021-12-06 18:47:02,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 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) [2021-12-06 18:47:02,274 INFO L276 IsEmpty]: Start isEmpty. Operand 94015 states and 116811 transitions. [2021-12-06 18:47:02,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 18:47:02,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:47:02,276 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:47:02,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 18:47:02,276 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:47:02,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:47:02,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1104294254, now seen corresponding path program 1 times [2021-12-06 18:47:02,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:47:02,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685700790] [2021-12-06 18:47:02,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:02,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:47:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:02,438 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:02,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:47:02,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685700790] [2021-12-06 18:47:02,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685700790] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:47:02,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26129221] [2021-12-06 18:47:02,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:47:02,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:47:02,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:47:02,439 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:47:02,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:47:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:47:02,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 18:47:02,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:47:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:03,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:47:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:47:03,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26129221] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:47:03,660 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:47:03,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 24 [2021-12-06 18:47:03,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349531824] [2021-12-06 18:47:03,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:47:03,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 18:47:03,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:47:03,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 18:47:03,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-12-06 18:47:03,661 INFO L87 Difference]: Start difference. First operand 94015 states and 116811 transitions. Second operand has 25 states, 25 states have (on average 10.76) internal successors, (269), 24 states have internal predecessors, (269), 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) [2021-12-06 18:48:05,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:05,047 INFO L93 Difference]: Finished difference Result 471886 states and 578425 transitions. [2021-12-06 18:48:05,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-12-06 18:48:05,048 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.76) internal successors, (269), 24 states have internal predecessors, (269), 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 101 [2021-12-06 18:48:05,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:05,616 INFO L225 Difference]: With dead ends: 471886 [2021-12-06 18:48:05,616 INFO L226 Difference]: Without dead ends: 396784 [2021-12-06 18:48:05,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 187 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1716 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1421, Invalid=4741, Unknown=0, NotChecked=0, Total=6162 [2021-12-06 18:48:05,710 INFO L933 BasicCegarLoop]: 1646 mSDtfsCounter, 11489 mSDsluCounter, 4371 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11489 SdHoareTripleChecker+Valid, 6017 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:05,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11489 Valid, 6017 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 18:48:06,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396784 states. [2021-12-06 18:48:39,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396784 to 219582. [2021-12-06 18:48:39,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219582 states, 219580 states have (on average 1.239124692594954) internal successors, (272087), 219581 states have internal predecessors, (272087), 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) [2021-12-06 18:48:39,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219582 states to 219582 states and 272087 transitions. [2021-12-06 18:48:39,778 INFO L78 Accepts]: Start accepts. Automaton has 219582 states and 272087 transitions. Word has length 101 [2021-12-06 18:48:39,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:48:39,778 INFO L470 AbstractCegarLoop]: Abstraction has 219582 states and 272087 transitions. [2021-12-06 18:48:39,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.76) internal successors, (269), 24 states have internal predecessors, (269), 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) [2021-12-06 18:48:39,779 INFO L276 IsEmpty]: Start isEmpty. Operand 219582 states and 272087 transitions. [2021-12-06 18:48:39,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 18:48:39,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:48:39,782 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:48:39,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 18:48:39,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 18:48:39,984 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:48:39,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:48:39,985 INFO L85 PathProgramCache]: Analyzing trace with hash 113691144, now seen corresponding path program 1 times [2021-12-06 18:48:39,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:48:39,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294427159] [2021-12-06 18:48:39,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:48:39,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:48:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:48:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:48:40,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:48:40,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294427159] [2021-12-06 18:48:40,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294427159] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:48:40,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:48:40,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:48:40,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565985465] [2021-12-06 18:48:40,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:48:40,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:48:40,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:48:40,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:48:40,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:48:40,074 INFO L87 Difference]: Start difference. First operand 219582 states and 272087 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-12-06 18:48:58,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:48:58,632 INFO L93 Difference]: Finished difference Result 325002 states and 401627 transitions. [2021-12-06 18:48:58,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:48:58,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2021-12-06 18:48:58,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:48:58,790 INFO L225 Difference]: With dead ends: 325002 [2021-12-06 18:48:58,791 INFO L226 Difference]: Without dead ends: 127736 [2021-12-06 18:48:58,861 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:48:58,862 INFO L933 BasicCegarLoop]: 1569 mSDtfsCounter, 30 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:48:58,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 3078 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:48:58,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127736 states. [2021-12-06 18:49:17,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127736 to 127734. [2021-12-06 18:49:17,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127734 states, 127732 states have (on average 1.219044562051796) internal successors, (155711), 127733 states have internal predecessors, (155711), 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) [2021-12-06 18:49:17,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127734 states to 127734 states and 155711 transitions. [2021-12-06 18:49:17,549 INFO L78 Accepts]: Start accepts. Automaton has 127734 states and 155711 transitions. Word has length 101 [2021-12-06 18:49:17,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:49:17,549 INFO L470 AbstractCegarLoop]: Abstraction has 127734 states and 155711 transitions. [2021-12-06 18:49:17,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-12-06 18:49:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 127734 states and 155711 transitions. [2021-12-06 18:49:17,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 18:49:17,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:49:17,553 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:49:17,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 18:49:17,553 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:49:17,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:17,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1119812972, now seen corresponding path program 1 times [2021-12-06 18:49:17,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:17,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403863941] [2021-12-06 18:49:17,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:17,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 18:49:17,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:17,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403863941] [2021-12-06 18:49:17,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403863941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:49:17,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:49:17,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:49:17,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616700499] [2021-12-06 18:49:17,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:49:17,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:49:17,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:17,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:49:17,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:49:17,593 INFO L87 Difference]: Start difference. First operand 127734 states and 155711 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 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) [2021-12-06 18:49:32,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:49:32,734 INFO L93 Difference]: Finished difference Result 224110 states and 271576 transitions. [2021-12-06 18:49:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:49:32,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 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 101 [2021-12-06 18:49:32,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:49:32,860 INFO L225 Difference]: With dead ends: 224110 [2021-12-06 18:49:32,860 INFO L226 Difference]: Without dead ends: 98362 [2021-12-06 18:49:32,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:49:32,920 INFO L933 BasicCegarLoop]: 1520 mSDtfsCounter, 4656 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4656 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:49:32,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4656 Valid, 3003 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:49:32,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98362 states. [2021-12-06 18:49:47,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98362 to 98362. [2021-12-06 18:49:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98362 states, 98360 states have (on average 1.1981903212688085) internal successors, (117854), 98361 states have internal predecessors, (117854), 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) [2021-12-06 18:49:48,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98362 states to 98362 states and 117854 transitions. [2021-12-06 18:49:48,120 INFO L78 Accepts]: Start accepts. Automaton has 98362 states and 117854 transitions. Word has length 101 [2021-12-06 18:49:48,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:49:48,120 INFO L470 AbstractCegarLoop]: Abstraction has 98362 states and 117854 transitions. [2021-12-06 18:49:48,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 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) [2021-12-06 18:49:48,120 INFO L276 IsEmpty]: Start isEmpty. Operand 98362 states and 117854 transitions. [2021-12-06 18:49:48,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-06 18:49:48,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:49:48,123 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:49:48,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-06 18:49:48,123 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:49:48,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:48,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2014715806, now seen corresponding path program 1 times [2021-12-06 18:49:48,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:48,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778253489] [2021-12-06 18:49:48,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:48,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:48,403 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:49:48,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:48,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778253489] [2021-12-06 18:49:48,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778253489] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:49:48,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076099702] [2021-12-06 18:49:48,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:48,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:49:48,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:49:48,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:49:48,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:49:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:48,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 18:49:48,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:49:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:49:49,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:49:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:49:51,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076099702] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:49:51,572 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:49:51,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 15] total 43 [2021-12-06 18:49:51,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336259622] [2021-12-06 18:49:51,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:49:51,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-06 18:49:51,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:51,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-06 18:49:51,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1664, Unknown=0, NotChecked=0, Total=1806 [2021-12-06 18:49:51,573 INFO L87 Difference]: Start difference. First operand 98362 states and 117854 transitions. Second operand has 43 states, 43 states have (on average 6.441860465116279) internal successors, (277), 43 states have internal predecessors, (277), 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) [2021-12-06 18:51:49,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:51:49,952 INFO L93 Difference]: Finished difference Result 316258 states and 372368 transitions. [2021-12-06 18:51:49,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 567 states. [2021-12-06 18:51:49,952 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.441860465116279) internal successors, (277), 43 states have internal predecessors, (277), 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 102 [2021-12-06 18:51:49,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:51:50,332 INFO L225 Difference]: With dead ends: 316258 [2021-12-06 18:51:50,332 INFO L226 Difference]: Without dead ends: 276346 [2021-12-06 18:51:50,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 606 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164820 ImplicationChecksByTransitivity, 55.2s TimeCoverageRelationStatistics Valid=27263, Invalid=341793, Unknown=0, NotChecked=0, Total=369056 [2021-12-06 18:51:50,414 INFO L933 BasicCegarLoop]: 2588 mSDtfsCounter, 24086 mSDsluCounter, 51223 mSDsCounter, 0 mSdLazyCounter, 7738 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24086 SdHoareTripleChecker+Valid, 53811 SdHoareTripleChecker+Invalid, 8341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 7738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:51:50,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24086 Valid, 53811 Invalid, 8341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [603 Valid, 7738 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-06 18:51:50,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276346 states. [2021-12-06 18:52:10,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276346 to 108924. [2021-12-06 18:52:10,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108924 states, 108922 states have (on average 1.2051559831806247) internal successors, (131268), 108923 states have internal predecessors, (131268), 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) [2021-12-06 18:52:10,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108924 states to 108924 states and 131268 transitions. [2021-12-06 18:52:10,917 INFO L78 Accepts]: Start accepts. Automaton has 108924 states and 131268 transitions. Word has length 102 [2021-12-06 18:52:10,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:52:10,917 INFO L470 AbstractCegarLoop]: Abstraction has 108924 states and 131268 transitions. [2021-12-06 18:52:10,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.441860465116279) internal successors, (277), 43 states have internal predecessors, (277), 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) [2021-12-06 18:52:10,917 INFO L276 IsEmpty]: Start isEmpty. Operand 108924 states and 131268 transitions. [2021-12-06 18:52:10,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-06 18:52:10,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:52:10,919 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:52:10,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 18:52:11,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:52:11,121 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:52:11,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:52:11,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1161784037, now seen corresponding path program 1 times [2021-12-06 18:52:11,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:52:11,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979296133] [2021-12-06 18:52:11,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:52:11,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:52:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:52:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:52:11,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:52:11,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979296133] [2021-12-06 18:52:11,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979296133] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:52:11,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947074744] [2021-12-06 18:52:11,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:52:11,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:52:11,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:52:11,452 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:52:11,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 18:52:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:52:11,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 18:52:11,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:52:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:52:12,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:52:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:52:13,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947074744] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:52:13,193 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:52:13,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2021-12-06 18:52:13,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981769834] [2021-12-06 18:52:13,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:52:13,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 18:52:13,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:52:13,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 18:52:13,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2021-12-06 18:52:13,194 INFO L87 Difference]: Start difference. First operand 108924 states and 131268 transitions. Second operand has 32 states, 32 states have (on average 7.875) internal successors, (252), 32 states have internal predecessors, (252), 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) [2021-12-06 18:52:52,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:52:52,830 INFO L93 Difference]: Finished difference Result 235400 states and 286354 transitions. [2021-12-06 18:52:52,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 18:52:52,831 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.875) internal successors, (252), 32 states have internal predecessors, (252), 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 102 [2021-12-06 18:52:52,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:52:53,080 INFO L225 Difference]: With dead ends: 235400 [2021-12-06 18:52:53,080 INFO L226 Difference]: Without dead ends: 194640 [2021-12-06 18:52:53,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=608, Invalid=2254, Unknown=0, NotChecked=0, Total=2862 [2021-12-06 18:52:53,134 INFO L933 BasicCegarLoop]: 1679 mSDtfsCounter, 10908 mSDsluCounter, 11948 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10908 SdHoareTripleChecker+Valid, 13627 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:52:53,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10908 Valid, 13627 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:52:53,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194640 states. [2021-12-06 18:53:11,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194640 to 97636. [2021-12-06 18:53:11,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97636 states, 97634 states have (on average 1.2017022758465288) internal successors, (117327), 97635 states have internal predecessors, (117327), 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) [2021-12-06 18:53:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97636 states to 97636 states and 117327 transitions. [2021-12-06 18:53:11,689 INFO L78 Accepts]: Start accepts. Automaton has 97636 states and 117327 transitions. Word has length 102 [2021-12-06 18:53:11,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:53:11,689 INFO L470 AbstractCegarLoop]: Abstraction has 97636 states and 117327 transitions. [2021-12-06 18:53:11,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.875) internal successors, (252), 32 states have internal predecessors, (252), 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) [2021-12-06 18:53:11,689 INFO L276 IsEmpty]: Start isEmpty. Operand 97636 states and 117327 transitions. [2021-12-06 18:53:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 18:53:11,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:53:11,691 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:53:11,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 18:53:11,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-06 18:53:11,893 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:53:11,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:53:11,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1832676401, now seen corresponding path program 1 times [2021-12-06 18:53:11,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:53:11,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863916076] [2021-12-06 18:53:11,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:53:11,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:53:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:53:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:53:12,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:53:12,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863916076] [2021-12-06 18:53:12,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863916076] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:53:12,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387050140] [2021-12-06 18:53:12,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:53:12,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:53:12,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:53:12,364 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:53:12,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 18:53:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:53:12,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 18:53:12,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:53:13,127 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:53:13,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:53:14,066 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:53:14,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387050140] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:53:14,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:53:14,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 38 [2021-12-06 18:53:14,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803687393] [2021-12-06 18:53:14,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:53:14,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 18:53:14,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:53:14,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 18:53:14,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1268, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 18:53:14,068 INFO L87 Difference]: Start difference. First operand 97636 states and 117327 transitions. Second operand has 38 states, 38 states have (on average 6.631578947368421) internal successors, (252), 38 states have internal predecessors, (252), 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) [2021-12-06 18:53:48,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:53:48,450 INFO L93 Difference]: Finished difference Result 195961 states and 238401 transitions. [2021-12-06 18:53:48,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 18:53:48,451 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.631578947368421) internal successors, (252), 38 states have internal predecessors, (252), 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 103 [2021-12-06 18:53:48,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:53:48,632 INFO L225 Difference]: With dead ends: 195961 [2021-12-06 18:53:48,632 INFO L226 Difference]: Without dead ends: 158463 [2021-12-06 18:53:48,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=740, Invalid=3682, Unknown=0, NotChecked=0, Total=4422 [2021-12-06 18:53:48,661 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 12273 mSDsluCounter, 25821 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12273 SdHoareTripleChecker+Valid, 27518 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:53:48,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12273 Valid, 27518 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 18:53:48,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158463 states. [2021-12-06 18:54:05,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158463 to 84078. [2021-12-06 18:54:05,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84078 states, 84076 states have (on average 1.200425805223845) internal successors, (100927), 84077 states have internal predecessors, (100927), 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) [2021-12-06 18:54:05,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84078 states to 84078 states and 100927 transitions. [2021-12-06 18:54:05,493 INFO L78 Accepts]: Start accepts. Automaton has 84078 states and 100927 transitions. Word has length 103 [2021-12-06 18:54:05,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:54:05,493 INFO L470 AbstractCegarLoop]: Abstraction has 84078 states and 100927 transitions. [2021-12-06 18:54:05,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.631578947368421) internal successors, (252), 38 states have internal predecessors, (252), 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) [2021-12-06 18:54:05,493 INFO L276 IsEmpty]: Start isEmpty. Operand 84078 states and 100927 transitions. [2021-12-06 18:54:05,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 18:54:05,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:54:05,494 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:54:05,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 18:54:05,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:54:05,696 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:54:05,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:54:05,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1201772181, now seen corresponding path program 1 times [2021-12-06 18:54:05,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:54:05,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520617473] [2021-12-06 18:54:05,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:54:05,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:54:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:54:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:54:06,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:54:06,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520617473] [2021-12-06 18:54:06,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520617473] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:54:06,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273783089] [2021-12-06 18:54:06,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:54:06,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:54:06,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:54:06,356 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:54:06,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd219df-834e-4baf-8a4f-45553848e45d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 18:54:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:54:06,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 18:54:06,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:54:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:54:07,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:54:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:54:08,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273783089] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:54:08,689 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:54:08,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 11, 11] total 44 [2021-12-06 18:54:08,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954943609] [2021-12-06 18:54:08,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:54:08,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-06 18:54:08,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:54:08,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-06 18:54:08,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1754, Unknown=0, NotChecked=0, Total=1892 [2021-12-06 18:54:08,691 INFO L87 Difference]: Start difference. First operand 84078 states and 100927 transitions. Second operand has 44 states, 44 states have (on average 6.363636363636363) internal successors, (280), 44 states have internal predecessors, (280), 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)