./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9412507a-cfe6-4a54-98d3-29b815fed7db/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9412507a-cfe6-4a54-98d3-29b815fed7db/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9412507a-cfe6-4a54-98d3-29b815fed7db/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9412507a-cfe6-4a54-98d3-29b815fed7db/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9412507a-cfe6-4a54-98d3-29b815fed7db/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9412507a-cfe6-4a54-98d3-29b815fed7db/bin/uautomizer-w2VwFs6gM0 --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 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:11:34,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:11:34,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:11:34,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:11:34,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:11:34,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:11:34,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:11:34,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:11:34,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:11:34,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:11:34,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:11:34,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:11:34,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:11:34,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:11:34,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:11:34,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:11:34,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:11:34,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:11:34,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:11:34,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:11:34,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:11:34,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:11:34,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:11:34,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:11:34,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:11:34,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:11:34,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:11:34,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:11:34,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:11:34,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:11:34,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:11:34,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:11:34,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:11:34,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:11:34,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:11:34,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:11:34,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:11:34,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:11:34,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:11:34,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:11:34,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:11:34,522 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9412507a-cfe6-4a54-98d3-29b815fed7db/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:11:34,570 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:11:34,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:11:34,571 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:11:34,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:11:34,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:11:34,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:11:34,579 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:11:34,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:11:34,579 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:11:34,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:11:34,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:11:34,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:11:34,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:11:34,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:11:34,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:11:34,582 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:11:34,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:11:34,582 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:11:34,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:11:34,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:11:34,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:11:34,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:11:34,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:11:34,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:11:34,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:11:34,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:11:34,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:11:34,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:11:34,584 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:11:34,586 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:11:34,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:11:34,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:11:34,587 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_9412507a-cfe6-4a54-98d3-29b815fed7db/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9412507a-cfe6-4a54-98d3-29b815fed7db/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd [2021-11-22 15:11:34,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:11:34,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:11:34,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:11:34,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:11:34,889 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:11:34,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9412507a-cfe6-4a54-98d3-29b815fed7db/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2021-11-22 15:11:34,987 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9412507a-cfe6-4a54-98d3-29b815fed7db/bin/uautomizer-w2VwFs6gM0/data/4ad6f61f8/f40f12389e9844dc90fe484d0d21c8e4/FLAG9669c061f [2021-11-22 15:11:35,609 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:11:35,616 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9412507a-cfe6-4a54-98d3-29b815fed7db/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2021-11-22 15:11:35,640 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9412507a-cfe6-4a54-98d3-29b815fed7db/bin/uautomizer-w2VwFs6gM0/data/4ad6f61f8/f40f12389e9844dc90fe484d0d21c8e4/FLAG9669c061f [2021-11-22 15:11:35,814 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9412507a-cfe6-4a54-98d3-29b815fed7db/bin/uautomizer-w2VwFs6gM0/data/4ad6f61f8/f40f12389e9844dc90fe484d0d21c8e4 [2021-11-22 15:11:35,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:11:35,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:11:35,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:11:35,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:11:35,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:11:35,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:11:35" (1/1) ... [2021-11-22 15:11:35,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ef9c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:35, skipping insertion in model container [2021-11-22 15:11:35,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:11:35" (1/1) ... [2021-11-22 15:11:35,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:11:35,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:11:36,500 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_9412507a-cfe6-4a54-98d3-29b815fed7db/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2021-11-22 15:11:36,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:11:36,523 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:11:36,675 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_9412507a-cfe6-4a54-98d3-29b815fed7db/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2021-11-22 15:11:36,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:11:36,708 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:11:36,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:36 WrapperNode [2021-11-22 15:11:36,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:11:36,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:11:36,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:11:36,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:11:36,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:36" (1/1) ... [2021-11-22 15:11:36,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:36" (1/1) ... [2021-11-22 15:11:37,305 INFO L137 Inliner]: procedures = 93, calls = 348, calls flagged for inlining = 201, calls inlined = 808, statements flattened = 24811 [2021-11-22 15:11:37,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:11:37,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:11:37,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:11:37,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:11:37,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:36" (1/1) ... [2021-11-22 15:11:37,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:36" (1/1) ... [2021-11-22 15:11:37,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:36" (1/1) ... [2021-11-22 15:11:37,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:36" (1/1) ... [2021-11-22 15:11:37,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:36" (1/1) ... [2021-11-22 15:11:37,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:36" (1/1) ... [2021-11-22 15:11:37,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:36" (1/1) ... [2021-11-22 15:11:37,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:11:37,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:11:37,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:11:37,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:11:37,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:36" (1/1) ... [2021-11-22 15:11:37,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:11:37,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9412507a-cfe6-4a54-98d3-29b815fed7db/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:37,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9412507a-cfe6-4a54-98d3-29b815fed7db/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:11:37,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9412507a-cfe6-4a54-98d3-29b815fed7db/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:11:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:11:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:11:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:11:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:11:38,246 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:11:38,247 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:11:47,253 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:11:47,339 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:11:47,339 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:11:47,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:11:47 BoogieIcfgContainer [2021-11-22 15:11:47,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:11:47,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:11:47,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:11:47,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:11:47,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:11:35" (1/3) ... [2021-11-22 15:11:47,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc2d060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:11:47, skipping insertion in model container [2021-11-22 15:11:47,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:36" (2/3) ... [2021-11-22 15:11:47,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc2d060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:11:47, skipping insertion in model container [2021-11-22 15:11:47,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:11:47" (3/3) ... [2021-11-22 15:11:47,364 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product27.cil.c [2021-11-22 15:11:47,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:11:47,375 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-22 15:11:47,465 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:11:47,472 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 [2021-11-22 15:11:47,473 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-22 15:11:47,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 6713 states, 6702 states have (on average 1.8628767532079975) internal successors, (12485), 6712 states have internal predecessors, (12485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:47,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-22 15:11:47,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:47,662 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] [2021-11-22 15:11:47,663 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:11:47,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:47,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1473562079, now seen corresponding path program 1 times [2021-11-22 15:11:47,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:47,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184072570] [2021-11-22 15:11:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:47,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:47,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:47,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:47,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184072570] [2021-11-22 15:11:47,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184072570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:47,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:47,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:11:47,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732164341] [2021-11-22 15:11:47,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:48,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:11:48,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:48,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:11:48,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:11:48,094 INFO L87 Difference]: Start difference. First operand has 6713 states, 6702 states have (on average 1.8628767532079975) internal successors, (12485), 6712 states have internal predecessors, (12485), 0 states have call successors, (0), 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 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:49,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:49,506 INFO L93 Difference]: Finished difference Result 26641 states and 49573 transitions. [2021-11-22 15:11:49,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:11:49,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-22 15:11:49,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:49,702 INFO L225 Difference]: With dead ends: 26641 [2021-11-22 15:11:49,703 INFO L226 Difference]: Without dead ends: 19934 [2021-11-22 15:11:49,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:11:49,746 INFO L933 BasicCegarLoop]: 24748 mSDtfsCounter, 36966 mSDsluCounter, 37149 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36966 SdHoareTripleChecker+Valid, 61897 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:49,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36966 Valid, 61897 Invalid, 77 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [13 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:11:49,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19934 states. [2021-11-22 15:11:50,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19934 to 6708. [2021-11-22 15:11:50,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6708 states, 6698 states have (on average 1.861003284562556) internal successors, (12465), 6707 states have internal predecessors, (12465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:50,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6708 states to 6708 states and 12465 transitions. [2021-11-22 15:11:50,409 INFO L78 Accepts]: Start accepts. Automaton has 6708 states and 12465 transitions. Word has length 52 [2021-11-22 15:11:50,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:50,410 INFO L470 AbstractCegarLoop]: Abstraction has 6708 states and 12465 transitions. [2021-11-22 15:11:50,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:50,411 INFO L276 IsEmpty]: Start isEmpty. Operand 6708 states and 12465 transitions. [2021-11-22 15:11:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 15:11:50,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:50,418 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] [2021-11-22 15:11:50,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:11:50,419 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:11:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash 860720764, now seen corresponding path program 1 times [2021-11-22 15:11:50,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:50,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670942021] [2021-11-22 15:11:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:50,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:50,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:50,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670942021] [2021-11-22 15:11:50,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670942021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:50,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:50,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:11:50,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069761585] [2021-11-22 15:11:50,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:50,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:11:50,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:50,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:11:50,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:11:50,595 INFO L87 Difference]: Start difference. First operand 6708 states and 12465 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:50,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:50,909 INFO L93 Difference]: Finished difference Result 13330 states and 24775 transitions. [2021-11-22 15:11:50,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:11:50,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-22 15:11:50,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:50,951 INFO L225 Difference]: With dead ends: 13330 [2021-11-22 15:11:50,951 INFO L226 Difference]: Without dead ends: 6638 [2021-11-22 15:11:50,964 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 [2021-11-22 15:11:50,966 INFO L933 BasicCegarLoop]: 12323 mSDtfsCounter, 12315 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12315 SdHoareTripleChecker+Valid, 12331 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:50,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12315 Valid, 12331 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:11:50,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6638 states. [2021-11-22 15:11:51,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6638 to 6638. [2021-11-22 15:11:51,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6638 states, 6628 states have (on average 1.8595353047676524) internal successors, (12325), 6637 states have internal predecessors, (12325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:51,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6638 states to 6638 states and 12325 transitions. [2021-11-22 15:11:51,373 INFO L78 Accepts]: Start accepts. Automaton has 6638 states and 12325 transitions. Word has length 53 [2021-11-22 15:11:51,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:51,374 INFO L470 AbstractCegarLoop]: Abstraction has 6638 states and 12325 transitions. [2021-11-22 15:11:51,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:51,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6638 states and 12325 transitions. [2021-11-22 15:11:51,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-22 15:11:51,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:51,386 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] [2021-11-22 15:11:51,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:11:51,387 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:11:51,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:51,387 INFO L85 PathProgramCache]: Analyzing trace with hash -298331817, now seen corresponding path program 1 times [2021-11-22 15:11:51,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:51,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714767460] [2021-11-22 15:11:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:51,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:51,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:51,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714767460] [2021-11-22 15:11:51,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714767460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:51,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:51,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:11:51,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907840253] [2021-11-22 15:11:51,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:51,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:11:51,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:51,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:11:51,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:11:51,456 INFO L87 Difference]: Start difference. First operand 6638 states and 12325 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:51,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:51,962 INFO L93 Difference]: Finished difference Result 13248 states and 24611 transitions. [2021-11-22 15:11:51,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:11:51,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-22 15:11:51,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:51,984 INFO L225 Difference]: With dead ends: 13248 [2021-11-22 15:11:51,984 INFO L226 Difference]: Without dead ends: 6638 [2021-11-22 15:11:51,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:11:52,001 INFO L933 BasicCegarLoop]: 12295 mSDtfsCounter, 24596 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24596 SdHoareTripleChecker+Valid, 12329 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:52,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24596 Valid, 12329 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:11:52,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6638 states. [2021-11-22 15:11:52,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6638 to 6638. [2021-11-22 15:11:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6638 states, 6628 states have (on average 1.8592335546167773) internal successors, (12323), 6637 states have internal predecessors, (12323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:52,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6638 states to 6638 states and 12323 transitions. [2021-11-22 15:11:52,311 INFO L78 Accepts]: Start accepts. Automaton has 6638 states and 12323 transitions. Word has length 56 [2021-11-22 15:11:52,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:52,312 INFO L470 AbstractCegarLoop]: Abstraction has 6638 states and 12323 transitions. [2021-11-22 15:11:52,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:52,313 INFO L276 IsEmpty]: Start isEmpty. Operand 6638 states and 12323 transitions. [2021-11-22 15:11:52,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 15:11:52,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:52,316 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] [2021-11-22 15:11:52,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:11:52,316 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:11:52,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:52,317 INFO L85 PathProgramCache]: Analyzing trace with hash -706929042, now seen corresponding path program 1 times [2021-11-22 15:11:52,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:52,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093669956] [2021-11-22 15:11:52,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:52,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:52,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:52,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:52,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093669956] [2021-11-22 15:11:52,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093669956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:52,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:52,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:11:52,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497331372] [2021-11-22 15:11:52,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:52,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:11:52,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:52,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:11:52,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:11:52,417 INFO L87 Difference]: Start difference. First operand 6638 states and 12323 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:53,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:53,049 INFO L93 Difference]: Finished difference Result 13248 states and 24608 transitions. [2021-11-22 15:11:53,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:11:53,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-22 15:11:53,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:53,071 INFO L225 Difference]: With dead ends: 13248 [2021-11-22 15:11:53,071 INFO L226 Difference]: Without dead ends: 6638 [2021-11-22 15:11:53,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:11:53,093 INFO L933 BasicCegarLoop]: 12297 mSDtfsCounter, 24590 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24590 SdHoareTripleChecker+Valid, 12332 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:53,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24590 Valid, 12332 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:11:53,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6638 states. [2021-11-22 15:11:53,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6638 to 6638. [2021-11-22 15:11:53,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6638 states, 6628 states have (on average 1.8589318044659022) internal successors, (12321), 6637 states have internal predecessors, (12321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6638 states to 6638 states and 12321 transitions. [2021-11-22 15:11:53,340 INFO L78 Accepts]: Start accepts. Automaton has 6638 states and 12321 transitions. Word has length 57 [2021-11-22 15:11:53,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:53,342 INFO L470 AbstractCegarLoop]: Abstraction has 6638 states and 12321 transitions. [2021-11-22 15:11:53,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 6638 states and 12321 transitions. [2021-11-22 15:11:53,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-22 15:11:53,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:53,345 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] [2021-11-22 15:11:53,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:11:53,345 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:11:53,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:53,346 INFO L85 PathProgramCache]: Analyzing trace with hash -914455726, now seen corresponding path program 1 times [2021-11-22 15:11:53,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:53,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402445456] [2021-11-22 15:11:53,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:53,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:53,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:53,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402445456] [2021-11-22 15:11:53,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402445456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:53,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:53,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:11:53,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700093913] [2021-11-22 15:11:53,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:53,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:11:53,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:53,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:11:53,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:11:53,449 INFO L87 Difference]: Start difference. First operand 6638 states and 12321 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:53,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:53,901 INFO L93 Difference]: Finished difference Result 13248 states and 24605 transitions. [2021-11-22 15:11:53,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:11:53,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-22 15:11:53,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:53,921 INFO L225 Difference]: With dead ends: 13248 [2021-11-22 15:11:53,921 INFO L226 Difference]: Without dead ends: 6638 [2021-11-22 15:11:53,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:11:53,931 INFO L933 BasicCegarLoop]: 12299 mSDtfsCounter, 24584 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24584 SdHoareTripleChecker+Valid, 12335 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:53,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24584 Valid, 12335 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:11:53,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6638 states. [2021-11-22 15:11:54,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6638 to 6638. [2021-11-22 15:11:54,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6638 states, 6628 states have (on average 1.8586300543150271) internal successors, (12319), 6637 states have internal predecessors, (12319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6638 states to 6638 states and 12319 transitions. [2021-11-22 15:11:54,157 INFO L78 Accepts]: Start accepts. Automaton has 6638 states and 12319 transitions. Word has length 58 [2021-11-22 15:11:54,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:54,157 INFO L470 AbstractCegarLoop]: Abstraction has 6638 states and 12319 transitions. [2021-11-22 15:11:54,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:54,158 INFO L276 IsEmpty]: Start isEmpty. Operand 6638 states and 12319 transitions. [2021-11-22 15:11:54,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 15:11:54,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:54,160 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] [2021-11-22 15:11:54,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:11:54,160 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:11:54,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:54,161 INFO L85 PathProgramCache]: Analyzing trace with hash 816237065, now seen corresponding path program 1 times [2021-11-22 15:11:54,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:54,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344982895] [2021-11-22 15:11:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:54,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:54,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:54,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:54,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344982895] [2021-11-22 15:11:54,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344982895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:54,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:54,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:11:54,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509884773] [2021-11-22 15:11:54,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:54,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:11:54,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:54,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:11:54,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:11:54,211 INFO L87 Difference]: Start difference. First operand 6638 states and 12319 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:54,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:54,640 INFO L93 Difference]: Finished difference Result 13248 states and 24602 transitions. [2021-11-22 15:11:54,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:11:54,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-22 15:11:54,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:54,660 INFO L225 Difference]: With dead ends: 13248 [2021-11-22 15:11:54,660 INFO L226 Difference]: Without dead ends: 6638 [2021-11-22 15:11:54,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:11:54,669 INFO L933 BasicCegarLoop]: 12301 mSDtfsCounter, 24578 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24578 SdHoareTripleChecker+Valid, 12338 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:54,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24578 Valid, 12338 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:11:54,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6638 states. [2021-11-22 15:11:54,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6638 to 6638. [2021-11-22 15:11:54,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6638 states, 6628 states have (on average 1.858328304164152) internal successors, (12317), 6637 states have internal predecessors, (12317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6638 states to 6638 states and 12317 transitions. [2021-11-22 15:11:54,897 INFO L78 Accepts]: Start accepts. Automaton has 6638 states and 12317 transitions. Word has length 59 [2021-11-22 15:11:54,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:54,898 INFO L470 AbstractCegarLoop]: Abstraction has 6638 states and 12317 transitions. [2021-11-22 15:11:54,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:54,898 INFO L276 IsEmpty]: Start isEmpty. Operand 6638 states and 12317 transitions. [2021-11-22 15:11:54,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 15:11:54,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:54,900 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] [2021-11-22 15:11:54,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:11:54,901 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:11:54,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:54,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1472832139, now seen corresponding path program 1 times [2021-11-22 15:11:54,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:54,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178663615] [2021-11-22 15:11:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:54,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:54,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:54,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178663615] [2021-11-22 15:11:54,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178663615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:54,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:54,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:11:54,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775910974] [2021-11-22 15:11:54,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:54,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:11:54,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:54,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:11:54,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:11:54,997 INFO L87 Difference]: Start difference. First operand 6638 states and 12317 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:55,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:55,573 INFO L93 Difference]: Finished difference Result 13248 states and 24599 transitions. [2021-11-22 15:11:55,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:11:55,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-22 15:11:55,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:55,595 INFO L225 Difference]: With dead ends: 13248 [2021-11-22 15:11:55,595 INFO L226 Difference]: Without dead ends: 6638 [2021-11-22 15:11:55,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:11:55,606 INFO L933 BasicCegarLoop]: 12291 mSDtfsCounter, 36877 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36877 SdHoareTripleChecker+Valid, 12331 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:55,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36877 Valid, 12331 Invalid, 40 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:11:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6638 states. [2021-11-22 15:11:55,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6638 to 6638. [2021-11-22 15:11:55,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6638 states, 6628 states have (on average 1.858026554013277) internal successors, (12315), 6637 states have internal predecessors, (12315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6638 states to 6638 states and 12315 transitions. [2021-11-22 15:11:55,913 INFO L78 Accepts]: Start accepts. Automaton has 6638 states and 12315 transitions. Word has length 60 [2021-11-22 15:11:55,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:55,913 INFO L470 AbstractCegarLoop]: Abstraction has 6638 states and 12315 transitions. [2021-11-22 15:11:55,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:55,914 INFO L276 IsEmpty]: Start isEmpty. Operand 6638 states and 12315 transitions. [2021-11-22 15:11:55,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 15:11:55,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:55,916 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] [2021-11-22 15:11:55,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:11:55,917 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:11:55,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:55,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1792775859, now seen corresponding path program 1 times [2021-11-22 15:11:55,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:55,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793981552] [2021-11-22 15:11:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:55,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:56,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:56,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793981552] [2021-11-22 15:11:56,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793981552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:56,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:56,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:11:56,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898875018] [2021-11-22 15:11:56,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:56,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:11:56,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:56,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:11:56,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:11:56,013 INFO L87 Difference]: Start difference. First operand 6638 states and 12315 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:00,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:00,173 INFO L93 Difference]: Finished difference Result 54693 states and 101539 transitions. [2021-11-22 15:12:00,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:12:00,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-22 15:12:00,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:00,336 INFO L225 Difference]: With dead ends: 54693 [2021-11-22 15:12:00,336 INFO L226 Difference]: Without dead ends: 48169 [2021-11-22 15:12:00,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:12:00,356 INFO L933 BasicCegarLoop]: 25610 mSDtfsCounter, 82488 mSDsluCounter, 68691 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82488 SdHoareTripleChecker+Valid, 94301 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:12:00,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82488 Valid, 94301 Invalid, 1672 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [356 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-22 15:12:00,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48169 states. [2021-11-22 15:12:01,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48169 to 12497. [2021-11-22 15:12:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12497 states, 12487 states have (on average 1.857852166252903) internal successors, (23199), 12496 states have internal predecessors, (23199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:01,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12497 states to 12497 states and 23199 transitions. [2021-11-22 15:12:01,396 INFO L78 Accepts]: Start accepts. Automaton has 12497 states and 23199 transitions. Word has length 60 [2021-11-22 15:12:01,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:01,399 INFO L470 AbstractCegarLoop]: Abstraction has 12497 states and 23199 transitions. [2021-11-22 15:12:01,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:01,399 INFO L276 IsEmpty]: Start isEmpty. Operand 12497 states and 23199 transitions. [2021-11-22 15:12:01,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 15:12:01,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:01,402 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] [2021-11-22 15:12:01,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:12:01,403 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:12:01,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:01,410 INFO L85 PathProgramCache]: Analyzing trace with hash 279679986, now seen corresponding path program 1 times [2021-11-22 15:12:01,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:01,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495108478] [2021-11-22 15:12:01,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:01,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:01,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:01,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:01,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495108478] [2021-11-22 15:12:01,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495108478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:01,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:01,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:12:01,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290319422] [2021-11-22 15:12:01,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:01,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:12:01,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:01,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:12:01,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:12:01,505 INFO L87 Difference]: Start difference. First operand 12497 states and 23199 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:03,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:03,006 INFO L93 Difference]: Finished difference Result 35158 states and 64955 transitions. [2021-11-22 15:12:03,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:12:03,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-22 15:12:03,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:03,078 INFO L225 Difference]: With dead ends: 35158 [2021-11-22 15:12:03,078 INFO L226 Difference]: Without dead ends: 22737 [2021-11-22 15:12:03,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:12:03,108 INFO L933 BasicCegarLoop]: 21926 mSDtfsCounter, 35751 mSDsluCounter, 30255 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35751 SdHoareTripleChecker+Valid, 52181 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:12:03,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35751 Valid, 52181 Invalid, 505 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [103 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:12:03,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22737 states. [2021-11-22 15:12:04,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22737 to 21916. [2021-11-22 15:12:04,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21916 states, 21906 states have (on average 1.856432027754953) internal successors, (40667), 21915 states have internal predecessors, (40667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21916 states to 21916 states and 40667 transitions. [2021-11-22 15:12:04,109 INFO L78 Accepts]: Start accepts. Automaton has 21916 states and 40667 transitions. Word has length 60 [2021-11-22 15:12:04,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:04,109 INFO L470 AbstractCegarLoop]: Abstraction has 21916 states and 40667 transitions. [2021-11-22 15:12:04,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:04,109 INFO L276 IsEmpty]: Start isEmpty. Operand 21916 states and 40667 transitions. [2021-11-22 15:12:04,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-22 15:12:04,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:04,111 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] [2021-11-22 15:12:04,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:12:04,112 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:12:04,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:04,113 INFO L85 PathProgramCache]: Analyzing trace with hash 730352873, now seen corresponding path program 1 times [2021-11-22 15:12:04,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:04,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379393537] [2021-11-22 15:12:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:04,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:04,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:04,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379393537] [2021-11-22 15:12:04,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379393537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:04,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:04,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:12:04,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643077833] [2021-11-22 15:12:04,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:04,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:12:04,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:04,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:12:04,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:12:04,188 INFO L87 Difference]: Start difference. First operand 21916 states and 40667 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2021-11-22 15:12:05,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:05,936 INFO L93 Difference]: Finished difference Result 64740 states and 120119 transitions. [2021-11-22 15:12:05,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:12:05,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 [2021-11-22 15:12:05,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:06,030 INFO L225 Difference]: With dead ends: 64740 [2021-11-22 15:12:06,030 INFO L226 Difference]: Without dead ends: 42860 [2021-11-22 15:12:06,067 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 [2021-11-22 15:12:06,068 INFO L933 BasicCegarLoop]: 14409 mSDtfsCounter, 11589 mSDsluCounter, 11595 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11589 SdHoareTripleChecker+Valid, 26004 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:12:06,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11589 Valid, 26004 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:12:06,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42860 states. [2021-11-22 15:12:07,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42860 to 21792. [2021-11-22 15:12:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21792 states, 21782 states have (on average 1.8556147277568635) internal successors, (40419), 21791 states have internal predecessors, (40419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:07,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21792 states to 21792 states and 40419 transitions. [2021-11-22 15:12:07,271 INFO L78 Accepts]: Start accepts. Automaton has 21792 states and 40419 transitions. Word has length 61 [2021-11-22 15:12:07,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:07,272 INFO L470 AbstractCegarLoop]: Abstraction has 21792 states and 40419 transitions. [2021-11-22 15:12:07,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2021-11-22 15:12:07,272 INFO L276 IsEmpty]: Start isEmpty. Operand 21792 states and 40419 transitions. [2021-11-22 15:12:07,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-22 15:12:07,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:07,274 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] [2021-11-22 15:12:07,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:12:07,275 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:12:07,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:07,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1395235806, now seen corresponding path program 1 times [2021-11-22 15:12:07,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:07,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181189605] [2021-11-22 15:12:07,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:07,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:07,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:07,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181189605] [2021-11-22 15:12:07,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181189605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:07,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:07,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:12:07,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852168120] [2021-11-22 15:12:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:07,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:12:07,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:07,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:12:07,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:12:07,366 INFO L87 Difference]: Start difference. First operand 21792 states and 40419 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2021-11-22 15:12:09,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:09,646 INFO L93 Difference]: Finished difference Result 52308 states and 96812 transitions. [2021-11-22 15:12:09,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:12:09,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 [2021-11-22 15:12:09,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:09,684 INFO L225 Difference]: With dead ends: 52308 [2021-11-22 15:12:09,685 INFO L226 Difference]: Without dead ends: 30554 [2021-11-22 15:12:09,700 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 [2021-11-22 15:12:09,701 INFO L933 BasicCegarLoop]: 19923 mSDtfsCounter, 30908 mSDsluCounter, 28971 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30908 SdHoareTripleChecker+Valid, 48894 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:12:09,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30908 Valid, 48894 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-22 15:12:09,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30554 states. [2021-11-22 15:12:10,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30554 to 30080. [2021-11-22 15:12:10,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30080 states, 30070 states have (on average 1.8406385101429996) internal successors, (55348), 30079 states have internal predecessors, (55348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30080 states to 30080 states and 55348 transitions. [2021-11-22 15:12:10,792 INFO L78 Accepts]: Start accepts. Automaton has 30080 states and 55348 transitions. Word has length 61 [2021-11-22 15:12:10,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:10,792 INFO L470 AbstractCegarLoop]: Abstraction has 30080 states and 55348 transitions. [2021-11-22 15:12:10,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2021-11-22 15:12:10,793 INFO L276 IsEmpty]: Start isEmpty. Operand 30080 states and 55348 transitions. [2021-11-22 15:12:10,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 15:12:10,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:10,795 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] [2021-11-22 15:12:10,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:12:10,796 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:12:10,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:10,796 INFO L85 PathProgramCache]: Analyzing trace with hash 628830439, now seen corresponding path program 1 times [2021-11-22 15:12:10,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:10,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297102965] [2021-11-22 15:12:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:10,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:10,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:10,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297102965] [2021-11-22 15:12:10,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297102965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:10,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:10,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:12:10,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222540325] [2021-11-22 15:12:10,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:10,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:12:10,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:10,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:12:10,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:12:10,863 INFO L87 Difference]: Start difference. First operand 30080 states and 55348 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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) [2021-11-22 15:12:13,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:13,322 INFO L93 Difference]: Finished difference Result 88903 states and 163682 transitions. [2021-11-22 15:12:13,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:12:13,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 [2021-11-22 15:12:13,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:13,417 INFO L225 Difference]: With dead ends: 88903 [2021-11-22 15:12:13,417 INFO L226 Difference]: Without dead ends: 58867 [2021-11-22 15:12:13,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:12:13,445 INFO L933 BasicCegarLoop]: 18380 mSDtfsCounter, 43719 mSDsluCounter, 11195 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43719 SdHoareTripleChecker+Valid, 29575 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:12:13,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43719 Valid, 29575 Invalid, 542 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:12:13,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58867 states. [2021-11-22 15:12:14,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58867 to 30080. [2021-11-22 15:12:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30080 states, 30070 states have (on average 1.8369471233787829) internal successors, (55237), 30079 states have internal predecessors, (55237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30080 states to 30080 states and 55237 transitions. [2021-11-22 15:12:14,567 INFO L78 Accepts]: Start accepts. Automaton has 30080 states and 55237 transitions. Word has length 64 [2021-11-22 15:12:14,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:14,568 INFO L470 AbstractCegarLoop]: Abstraction has 30080 states and 55237 transitions. [2021-11-22 15:12:14,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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) [2021-11-22 15:12:14,568 INFO L276 IsEmpty]: Start isEmpty. Operand 30080 states and 55237 transitions. [2021-11-22 15:12:14,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 15:12:14,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:14,570 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] [2021-11-22 15:12:14,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:12:14,570 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:12:14,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:14,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2044707254, now seen corresponding path program 1 times [2021-11-22 15:12:14,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:14,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687924261] [2021-11-22 15:12:14,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:14,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:14,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:14,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687924261] [2021-11-22 15:12:14,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687924261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:14,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:14,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:12:14,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332075269] [2021-11-22 15:12:14,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:14,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:12:14,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:14,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:12:14,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:12:14,624 INFO L87 Difference]: Start difference. First operand 30080 states and 55237 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:23,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:23,185 INFO L93 Difference]: Finished difference Result 255469 states and 470303 transitions. [2021-11-22 15:12:23,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:12:23,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-22 15:12:23,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:23,832 INFO L225 Difference]: With dead ends: 255469 [2021-11-22 15:12:23,832 INFO L226 Difference]: Without dead ends: 225452 [2021-11-22 15:12:23,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:12:23,890 INFO L933 BasicCegarLoop]: 32294 mSDtfsCounter, 75157 mSDsluCounter, 78213 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75157 SdHoareTripleChecker+Valid, 110507 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:12:23,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75157 Valid, 110507 Invalid, 1353 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [248 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-22 15:12:24,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225452 states. [2021-11-22 15:12:27,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225452 to 57878. [2021-11-22 15:12:27,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57878 states, 57868 states have (on average 1.8357814336075207) internal successors, (106233), 57877 states have internal predecessors, (106233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57878 states to 57878 states and 106233 transitions. [2021-11-22 15:12:27,487 INFO L78 Accepts]: Start accepts. Automaton has 57878 states and 106233 transitions. Word has length 65 [2021-11-22 15:12:27,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:27,487 INFO L470 AbstractCegarLoop]: Abstraction has 57878 states and 106233 transitions. [2021-11-22 15:12:27,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 57878 states and 106233 transitions. [2021-11-22 15:12:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 15:12:27,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:27,489 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] [2021-11-22 15:12:27,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:12:27,490 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:12:27,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:27,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1031550818, now seen corresponding path program 1 times [2021-11-22 15:12:27,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:27,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678221417] [2021-11-22 15:12:27,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:27,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:27,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:27,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678221417] [2021-11-22 15:12:27,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678221417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:27,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:27,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:12:27,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911738033] [2021-11-22 15:12:27,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:27,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:12:27,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:27,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:12:27,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:12:27,536 INFO L87 Difference]: Start difference. First operand 57878 states and 106233 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)