./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product32.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_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/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_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/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_abbaa101-018f-4efc-b07a-7066df912e75/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 6b54f48e5606af61de5b12570bc2e15a173e4036917e2e3bdec28cef1386724b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:20:00,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:20:00,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:20:00,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:20:00,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:20:00,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:20:00,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:20:00,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:20:00,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:20:00,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:20:00,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:20:00,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:20:00,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:20:00,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:20:00,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:20:00,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:20:00,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:20:00,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:20:00,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:20:00,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:20:00,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:20:00,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:20:00,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:20:00,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:20:00,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:20:00,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:20:00,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:20:00,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:20:00,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:20:00,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:20:00,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:20:00,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:20:00,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:20:00,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:20:00,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:20:00,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:20:00,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:20:00,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:20:00,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:20:00,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:20:00,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:20:00,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 16:20:00,647 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:20:00,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:20:00,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:20:00,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:20:00,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:20:00,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:20:00,650 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:20:00,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:20:00,651 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:20:00,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:20:00,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:20:00,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:20:00,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:20:00,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:20:00,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:20:00,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:20:00,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:20:00,654 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:20:00,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:20:00,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:20:00,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:20:00,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:20:00,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:20:00,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:20:00,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:20:00,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:20:00,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:20:00,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:20:00,657 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:20:00,659 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:20:00,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:20:00,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:20:00,660 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_abbaa101-018f-4efc-b07a-7066df912e75/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b54f48e5606af61de5b12570bc2e15a173e4036917e2e3bdec28cef1386724b [2021-11-22 16:20:00,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:20:00,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:20:00,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:20:00,990 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:20:00,991 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:20:00,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/product-lines/email_spec27_product32.cil.c [2021-11-22 16:20:01,094 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0/data/e3b74f5db/97099cd957b9498c8cb85f6ab0bcb785/FLAGa4ab352fe [2021-11-22 16:20:01,817 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:20:01,820 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/sv-benchmarks/c/product-lines/email_spec27_product32.cil.c [2021-11-22 16:20:01,858 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0/data/e3b74f5db/97099cd957b9498c8cb85f6ab0bcb785/FLAGa4ab352fe [2021-11-22 16:20:02,072 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0/data/e3b74f5db/97099cd957b9498c8cb85f6ab0bcb785 [2021-11-22 16:20:02,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:20:02,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:20:02,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:20:02,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:20:02,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:20:02,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:20:02" (1/1) ... [2021-11-22 16:20:02,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683eaa76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:02, skipping insertion in model container [2021-11-22 16:20:02,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:20:02" (1/1) ... [2021-11-22 16:20:02,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:20:02,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:20:02,687 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_abbaa101-018f-4efc-b07a-7066df912e75/sv-benchmarks/c/product-lines/email_spec27_product32.cil.c[27975,27988] [2021-11-22 16:20:03,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:20:03,093 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:20:03,165 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_abbaa101-018f-4efc-b07a-7066df912e75/sv-benchmarks/c/product-lines/email_spec27_product32.cil.c[27975,27988] [2021-11-22 16:20:03,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:20:03,263 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:20:03,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:03 WrapperNode [2021-11-22 16:20:03,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:20:03,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:20:03,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:20:03,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:20:03,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:03" (1/1) ... [2021-11-22 16:20:03,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:03" (1/1) ... [2021-11-22 16:20:03,477 INFO L137 Inliner]: procedures = 134, calls = 238, calls flagged for inlining = 145, calls inlined = 346, statements flattened = 5711 [2021-11-22 16:20:03,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:20:03,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:20:03,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:20:03,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:20:03,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:03" (1/1) ... [2021-11-22 16:20:03,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:03" (1/1) ... [2021-11-22 16:20:03,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:03" (1/1) ... [2021-11-22 16:20:03,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:03" (1/1) ... [2021-11-22 16:20:03,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:03" (1/1) ... [2021-11-22 16:20:03,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:03" (1/1) ... [2021-11-22 16:20:03,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:03" (1/1) ... [2021-11-22 16:20:03,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:20:03,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:20:03,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:20:03,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:20:03,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:03" (1/1) ... [2021-11-22 16:20:03,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:20:03,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:20:03,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:20:03,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:20:03,849 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-22 16:20:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:20:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 16:20:03,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:20:03,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:20:04,190 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:20:04,192 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:20:06,903 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:20:06,924 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:20:06,924 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 16:20:06,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:20:06 BoogieIcfgContainer [2021-11-22 16:20:06,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:20:06,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:20:06,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:20:06,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:20:06,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:20:02" (1/3) ... [2021-11-22 16:20:06,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77329549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:20:06, skipping insertion in model container [2021-11-22 16:20:06,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:03" (2/3) ... [2021-11-22 16:20:06,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77329549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:20:06, skipping insertion in model container [2021-11-22 16:20:06,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:20:06" (3/3) ... [2021-11-22 16:20:06,938 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product32.cil.c [2021-11-22 16:20:06,943 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:20:06,944 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-22 16:20:07,006 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:20:07,014 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 16:20:07,015 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-22 16:20:07,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 1236 states, 1229 states have (on average 1.7005695687550855) internal successors, (2090), 1235 states have internal predecessors, (2090), 0 states have call successors, (0), 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 16:20:07,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-22 16:20:07,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:07,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:07,107 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:07,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:07,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2085236386, now seen corresponding path program 1 times [2021-11-22 16:20:07,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:07,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116100502] [2021-11-22 16:20:07,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:07,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:07,551 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 16:20:07,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:07,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116100502] [2021-11-22 16:20:07,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116100502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:07,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:07,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:20:07,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618342857] [2021-11-22 16:20:07,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:07,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:20:07,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:07,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:20:07,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:20:07,647 INFO L87 Difference]: Start difference. First operand has 1236 states, 1229 states have (on average 1.7005695687550855) internal successors, (2090), 1235 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:07,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:07,925 INFO L93 Difference]: Finished difference Result 3655 states and 6194 transitions. [2021-11-22 16:20:07,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:20:07,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-22 16:20:07,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:07,972 INFO L225 Difference]: With dead ends: 3655 [2021-11-22 16:20:07,972 INFO L226 Difference]: Without dead ends: 2333 [2021-11-22 16:20:07,984 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 16:20:07,993 INFO L933 BasicCegarLoop]: 4111 mSDtfsCounter, 2051 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 6157 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:07,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2051 Valid, 6157 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:08,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2021-11-22 16:20:08,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 1177. [2021-11-22 16:20:08,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1171 states have (on average 1.7070879590093937) internal successors, (1999), 1176 states have internal predecessors, (1999), 0 states have call successors, (0), 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 16:20:08,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1999 transitions. [2021-11-22 16:20:08,130 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1999 transitions. Word has length 72 [2021-11-22 16:20:08,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:08,134 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1999 transitions. [2021-11-22 16:20:08,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:08,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1999 transitions. [2021-11-22 16:20:08,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-22 16:20:08,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:08,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:08,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 16:20:08,144 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:08,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:08,146 INFO L85 PathProgramCache]: Analyzing trace with hash 248832329, now seen corresponding path program 1 times [2021-11-22 16:20:08,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:08,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780443721] [2021-11-22 16:20:08,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:08,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:08,405 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 16:20:08,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:08,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780443721] [2021-11-22 16:20:08,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780443721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:08,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:08,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:20:08,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301515064] [2021-11-22 16:20:08,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:08,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:20:08,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:20:08,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:20:08,415 INFO L87 Difference]: Start difference. First operand 1177 states and 1999 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:08,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:08,756 INFO L93 Difference]: Finished difference Result 3472 states and 5905 transitions. [2021-11-22 16:20:08,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 16:20:08,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-22 16:20:08,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:08,779 INFO L225 Difference]: With dead ends: 3472 [2021-11-22 16:20:08,780 INFO L226 Difference]: Without dead ends: 2318 [2021-11-22 16:20:08,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:20:08,791 INFO L933 BasicCegarLoop]: 3906 mSDtfsCounter, 3952 mSDsluCounter, 5851 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3952 SdHoareTripleChecker+Valid, 9757 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:08,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3952 Valid, 9757 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:20:08,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-11-22 16:20:08,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1177. [2021-11-22 16:20:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1171 states have (on average 1.7062339880444064) internal successors, (1998), 1176 states have internal predecessors, (1998), 0 states have call successors, (0), 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 16:20:08,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1998 transitions. [2021-11-22 16:20:08,916 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1998 transitions. Word has length 74 [2021-11-22 16:20:08,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:08,917 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1998 transitions. [2021-11-22 16:20:08,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:08,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1998 transitions. [2021-11-22 16:20:08,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-22 16:20:08,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:08,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:08,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 16:20:08,928 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:08,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:08,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1131486898, now seen corresponding path program 1 times [2021-11-22 16:20:08,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:08,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749209745] [2021-11-22 16:20:08,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:08,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:09,051 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 16:20:09,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:09,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749209745] [2021-11-22 16:20:09,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749209745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:09,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:09,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:20:09,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485194987] [2021-11-22 16:20:09,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:09,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:20:09,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:09,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:20:09,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:20:09,058 INFO L87 Difference]: Start difference. First operand 1177 states and 1998 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:09,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:09,163 INFO L93 Difference]: Finished difference Result 2333 states and 3967 transitions. [2021-11-22 16:20:09,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:20:09,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-22 16:20:09,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:09,173 INFO L225 Difference]: With dead ends: 2333 [2021-11-22 16:20:09,173 INFO L226 Difference]: Without dead ends: 1184 [2021-11-22 16:20:09,176 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 16:20:09,185 INFO L933 BasicCegarLoop]: 2002 mSDtfsCounter, 1971 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:09,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1971 Valid, 2024 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:09,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2021-11-22 16:20:09,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1177. [2021-11-22 16:20:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1171 states have (on average 1.703672075149445) internal successors, (1995), 1176 states have internal predecessors, (1995), 0 states have call successors, (0), 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 16:20:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1995 transitions. [2021-11-22 16:20:09,251 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1995 transitions. Word has length 75 [2021-11-22 16:20:09,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:09,253 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1995 transitions. [2021-11-22 16:20:09,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:09,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1995 transitions. [2021-11-22 16:20:09,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 16:20:09,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:09,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:09,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 16:20:09,258 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:09,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:09,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1299600973, now seen corresponding path program 1 times [2021-11-22 16:20:09,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:09,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469142435] [2021-11-22 16:20:09,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:09,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:09,406 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 16:20:09,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:09,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469142435] [2021-11-22 16:20:09,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469142435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:09,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:09,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:20:09,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687736339] [2021-11-22 16:20:09,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:09,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:20:09,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:09,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:20:09,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:20:09,410 INFO L87 Difference]: Start difference. First operand 1177 states and 1995 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:09,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:09,744 INFO L93 Difference]: Finished difference Result 3459 states and 5882 transitions. [2021-11-22 16:20:09,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:20:09,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-22 16:20:09,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:09,763 INFO L225 Difference]: With dead ends: 3459 [2021-11-22 16:20:09,763 INFO L226 Difference]: Without dead ends: 2315 [2021-11-22 16:20:09,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:20:09,768 INFO L933 BasicCegarLoop]: 1979 mSDtfsCounter, 9726 mSDsluCounter, 1992 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9726 SdHoareTripleChecker+Valid, 3971 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:09,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9726 Valid, 3971 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:20:09,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2021-11-22 16:20:09,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 1177. [2021-11-22 16:20:09,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1171 states have (on average 1.7028181041844577) internal successors, (1994), 1176 states have internal predecessors, (1994), 0 states have call successors, (0), 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 16:20:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1994 transitions. [2021-11-22 16:20:09,872 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1994 transitions. Word has length 77 [2021-11-22 16:20:09,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:09,872 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1994 transitions. [2021-11-22 16:20:09,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:09,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1994 transitions. [2021-11-22 16:20:09,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-22 16:20:09,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:09,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:09,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 16:20:09,877 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:09,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:09,877 INFO L85 PathProgramCache]: Analyzing trace with hash -2053245468, now seen corresponding path program 1 times [2021-11-22 16:20:09,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:09,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394424731] [2021-11-22 16:20:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:09,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:09,954 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 16:20:09,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:09,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394424731] [2021-11-22 16:20:09,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394424731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:09,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:09,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:20:09,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661009382] [2021-11-22 16:20:09,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:09,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:20:09,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:09,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:20:09,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:20:09,958 INFO L87 Difference]: Start difference. First operand 1177 states and 1994 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:10,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:10,297 INFO L93 Difference]: Finished difference Result 3466 states and 5888 transitions. [2021-11-22 16:20:10,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:20:10,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-22 16:20:10,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:10,313 INFO L225 Difference]: With dead ends: 3466 [2021-11-22 16:20:10,314 INFO L226 Difference]: Without dead ends: 2322 [2021-11-22 16:20:10,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:20:10,318 INFO L933 BasicCegarLoop]: 1978 mSDtfsCounter, 9730 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9730 SdHoareTripleChecker+Valid, 3974 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:10,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9730 Valid, 3974 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:20:10,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2021-11-22 16:20:10,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 1177. [2021-11-22 16:20:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1171 states have (on average 1.7019641332194706) internal successors, (1993), 1176 states have internal predecessors, (1993), 0 states have call successors, (0), 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 16:20:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1993 transitions. [2021-11-22 16:20:10,429 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1993 transitions. Word has length 78 [2021-11-22 16:20:10,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:10,429 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1993 transitions. [2021-11-22 16:20:10,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:10,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1993 transitions. [2021-11-22 16:20:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 16:20:10,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:10,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:10,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 16:20:10,444 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:10,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:10,446 INFO L85 PathProgramCache]: Analyzing trace with hash -95538258, now seen corresponding path program 1 times [2021-11-22 16:20:10,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:10,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606779098] [2021-11-22 16:20:10,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:10,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:10,542 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 16:20:10,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:10,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606779098] [2021-11-22 16:20:10,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606779098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:10,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:10,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:20:10,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431694660] [2021-11-22 16:20:10,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:10,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:20:10,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:10,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:20:10,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:20:10,545 INFO L87 Difference]: Start difference. First operand 1177 states and 1993 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:10,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:10,642 INFO L93 Difference]: Finished difference Result 2055 states and 3462 transitions. [2021-11-22 16:20:10,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:20:10,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-22 16:20:10,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:10,654 INFO L225 Difference]: With dead ends: 2055 [2021-11-22 16:20:10,654 INFO L226 Difference]: Without dead ends: 1180 [2021-11-22 16:20:10,657 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 16:20:10,659 INFO L933 BasicCegarLoop]: 1991 mSDtfsCounter, 1 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3980 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:10,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 3980 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:10,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-11-22 16:20:10,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1179. [2021-11-22 16:20:10,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1173 states have (on average 1.70076726342711) internal successors, (1995), 1178 states have internal predecessors, (1995), 0 states have call successors, (0), 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 16:20:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1995 transitions. [2021-11-22 16:20:10,744 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1995 transitions. Word has length 79 [2021-11-22 16:20:10,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:10,745 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1995 transitions. [2021-11-22 16:20:10,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:10,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1995 transitions. [2021-11-22 16:20:10,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-22 16:20:10,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:10,748 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:10,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 16:20:10,749 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:10,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:10,750 INFO L85 PathProgramCache]: Analyzing trace with hash 2010686387, now seen corresponding path program 1 times [2021-11-22 16:20:10,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:10,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059735157] [2021-11-22 16:20:10,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:10,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:20:10,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:10,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059735157] [2021-11-22 16:20:10,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059735157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:10,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:10,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:20:10,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841989651] [2021-11-22 16:20:10,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:10,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:20:10,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:10,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:20:10,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:20:10,819 INFO L87 Difference]: Start difference. First operand 1179 states and 1995 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 16:20:10,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:10,995 INFO L93 Difference]: Finished difference Result 3409 states and 5795 transitions. [2021-11-22 16:20:10,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:20:10,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-22 16:20:10,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:11,010 INFO L225 Difference]: With dead ends: 3409 [2021-11-22 16:20:11,010 INFO L226 Difference]: Without dead ends: 2268 [2021-11-22 16:20:11,013 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 16:20:11,014 INFO L933 BasicCegarLoop]: 1992 mSDtfsCounter, 1943 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1943 SdHoareTripleChecker+Valid, 3886 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:11,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1943 Valid, 3886 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:11,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2021-11-22 16:20:11,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 1393. [2021-11-22 16:20:11,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1387 states have (on average 1.7166546503244413) internal successors, (2381), 1392 states have internal predecessors, (2381), 0 states have call successors, (0), 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 16:20:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 2381 transitions. [2021-11-22 16:20:11,110 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 2381 transitions. Word has length 88 [2021-11-22 16:20:11,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:11,111 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 2381 transitions. [2021-11-22 16:20:11,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 16:20:11,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 2381 transitions. [2021-11-22 16:20:11,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-22 16:20:11,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:11,114 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:11,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 16:20:11,115 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:11,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:11,115 INFO L85 PathProgramCache]: Analyzing trace with hash 838984705, now seen corresponding path program 1 times [2021-11-22 16:20:11,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:11,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753217530] [2021-11-22 16:20:11,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:11,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:11,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:20:11,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:11,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753217530] [2021-11-22 16:20:11,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753217530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:11,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:11,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:20:11,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477096214] [2021-11-22 16:20:11,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:11,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:20:11,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:11,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:20:11,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:20:11,185 INFO L87 Difference]: Start difference. First operand 1393 states and 2381 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 16:20:11,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:11,477 INFO L93 Difference]: Finished difference Result 4093 states and 7033 transitions. [2021-11-22 16:20:11,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:20:11,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-11-22 16:20:11,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:11,495 INFO L225 Difference]: With dead ends: 4093 [2021-11-22 16:20:11,496 INFO L226 Difference]: Without dead ends: 2738 [2021-11-22 16:20:11,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:20:11,500 INFO L933 BasicCegarLoop]: 3907 mSDtfsCounter, 3921 mSDsluCounter, 5860 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 9767 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:11,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3921 Valid, 9767 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:20:11,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-11-22 16:20:11,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 1393. [2021-11-22 16:20:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1387 states have (on average 1.71521268925739) internal successors, (2379), 1392 states have internal predecessors, (2379), 0 states have call successors, (0), 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 16:20:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 2379 transitions. [2021-11-22 16:20:11,642 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 2379 transitions. Word has length 89 [2021-11-22 16:20:11,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:11,642 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 2379 transitions. [2021-11-22 16:20:11,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 16:20:11,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 2379 transitions. [2021-11-22 16:20:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-22 16:20:11,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:11,646 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:11,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 16:20:11,646 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:11,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:11,647 INFO L85 PathProgramCache]: Analyzing trace with hash -795190272, now seen corresponding path program 1 times [2021-11-22 16:20:11,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:11,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835524898] [2021-11-22 16:20:11,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:11,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:20:11,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:11,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835524898] [2021-11-22 16:20:11,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835524898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:11,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:11,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:20:11,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523023902] [2021-11-22 16:20:11,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:11,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:20:11,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:11,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:20:11,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:20:11,697 INFO L87 Difference]: Start difference. First operand 1393 states and 2379 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:11,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:11,878 INFO L93 Difference]: Finished difference Result 4091 states and 7025 transitions. [2021-11-22 16:20:11,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:20:11,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-22 16:20:11,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:11,896 INFO L225 Difference]: With dead ends: 4091 [2021-11-22 16:20:11,896 INFO L226 Difference]: Without dead ends: 2736 [2021-11-22 16:20:11,899 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 16:20:11,900 INFO L933 BasicCegarLoop]: 3457 mSDtfsCounter, 1940 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 5437 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:11,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1940 Valid, 5437 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:11,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2021-11-22 16:20:12,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 1861. [2021-11-22 16:20:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1855 states have (on average 1.7390835579514825) internal successors, (3226), 1860 states have internal predecessors, (3226), 0 states have call successors, (0), 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 16:20:12,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 3226 transitions. [2021-11-22 16:20:12,046 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 3226 transitions. Word has length 90 [2021-11-22 16:20:12,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:12,046 INFO L470 AbstractCegarLoop]: Abstraction has 1861 states and 3226 transitions. [2021-11-22 16:20:12,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:12,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 3226 transitions. [2021-11-22 16:20:12,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-22 16:20:12,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:12,051 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:12,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 16:20:12,052 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:12,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:12,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1544972263, now seen corresponding path program 1 times [2021-11-22 16:20:12,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:12,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126381638] [2021-11-22 16:20:12,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:12,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:12,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:20:12,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:12,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126381638] [2021-11-22 16:20:12,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126381638] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:20:12,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523436596] [2021-11-22 16:20:12,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:12,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:20:12,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:20:12,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:20:12,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 16:20:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:12,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:20:12,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:12,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:20:12,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:20:12,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523436596] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:20:12,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:20:12,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-22 16:20:12,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512929022] [2021-11-22 16:20:12,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:20:12,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 16:20:12,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:12,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 16:20:12,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:20:12,897 INFO L87 Difference]: Start difference. First operand 1861 states and 3226 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:13,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:13,519 INFO L93 Difference]: Finished difference Result 7321 states and 12626 transitions. [2021-11-22 16:20:13,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:20:13,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-22 16:20:13,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:13,565 INFO L225 Difference]: With dead ends: 7321 [2021-11-22 16:20:13,565 INFO L226 Difference]: Without dead ends: 6446 [2021-11-22 16:20:13,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:20:13,569 INFO L933 BasicCegarLoop]: 1990 mSDtfsCounter, 7758 mSDsluCounter, 7908 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7758 SdHoareTripleChecker+Valid, 9898 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:13,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7758 Valid, 9898 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:13,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6446 states. [2021-11-22 16:20:13,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6446 to 3821. [2021-11-22 16:20:13,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3821 states, 3815 states have (on average 1.7706422018348624) internal successors, (6755), 3820 states have internal predecessors, (6755), 0 states have call successors, (0), 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 16:20:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3821 states to 3821 states and 6755 transitions. [2021-11-22 16:20:13,857 INFO L78 Accepts]: Start accepts. Automaton has 3821 states and 6755 transitions. Word has length 90 [2021-11-22 16:20:13,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:13,858 INFO L470 AbstractCegarLoop]: Abstraction has 3821 states and 6755 transitions. [2021-11-22 16:20:13,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:13,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3821 states and 6755 transitions. [2021-11-22 16:20:13,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-22 16:20:13,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:13,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:13,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 16:20:14,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbaa101-018f-4efc-b07a-7066df912e75/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-22 16:20:14,092 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:14,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:14,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2076515221, now seen corresponding path program 1 times [2021-11-22 16:20:14,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:14,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545150379] [2021-11-22 16:20:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:14,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:14,151 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 16:20:14,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:14,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545150379] [2021-11-22 16:20:14,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545150379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:14,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:14,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:20:14,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377633330] [2021-11-22 16:20:14,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:14,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:20:14,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:14,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:20:14,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:20:14,154 INFO L87 Difference]: Start difference. First operand 3821 states and 6755 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:14,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:14,603 INFO L93 Difference]: Finished difference Result 10231 states and 18103 transitions. [2021-11-22 16:20:14,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:20:14,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-22 16:20:14,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:14,641 INFO L225 Difference]: With dead ends: 10231 [2021-11-22 16:20:14,641 INFO L226 Difference]: Without dead ends: 6610 [2021-11-22 16:20:14,648 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 16:20:14,649 INFO L933 BasicCegarLoop]: 1992 mSDtfsCounter, 1938 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1938 SdHoareTripleChecker+Valid, 3971 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:14,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1938 Valid, 3971 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:14,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6610 states. [2021-11-22 16:20:15,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 5735. [2021-11-22 16:20:15,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5735 states, 5729 states have (on average 1.780066329202304) internal successors, (10198), 5734 states have internal predecessors, (10198), 0 states have call successors, (0), 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 16:20:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5735 states to 5735 states and 10198 transitions. [2021-11-22 16:20:15,158 INFO L78 Accepts]: Start accepts. Automaton has 5735 states and 10198 transitions. Word has length 93 [2021-11-22 16:20:15,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:15,159 INFO L470 AbstractCegarLoop]: Abstraction has 5735 states and 10198 transitions. [2021-11-22 16:20:15,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:15,160 INFO L276 IsEmpty]: Start isEmpty. Operand 5735 states and 10198 transitions. [2021-11-22 16:20:15,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-22 16:20:15,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:15,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:15,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 16:20:15,178 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:15,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:15,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1324614073, now seen corresponding path program 1 times [2021-11-22 16:20:15,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:15,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137806636] [2021-11-22 16:20:15,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:15,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:15,250 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 16:20:15,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:15,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137806636] [2021-11-22 16:20:15,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137806636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:15,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:15,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:20:15,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642691845] [2021-11-22 16:20:15,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:15,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:20:15,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:15,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:20:15,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:20:15,253 INFO L87 Difference]: Start difference. First operand 5735 states and 10198 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:15,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:15,843 INFO L93 Difference]: Finished difference Result 14514 states and 25805 transitions. [2021-11-22 16:20:15,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:20:15,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-22 16:20:15,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:15,876 INFO L225 Difference]: With dead ends: 14514 [2021-11-22 16:20:15,876 INFO L226 Difference]: Without dead ends: 9346 [2021-11-22 16:20:15,887 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 16:20:15,889 INFO L933 BasicCegarLoop]: 1991 mSDtfsCounter, 1936 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:15,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1936 Valid, 3922 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:15,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9346 states. [2021-11-22 16:20:16,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9346 to 8471. [2021-11-22 16:20:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8471 states, 8465 states have (on average 1.7838157117542823) internal successors, (15100), 8470 states have internal predecessors, (15100), 0 states have call successors, (0), 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 16:20:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8471 states to 8471 states and 15100 transitions. [2021-11-22 16:20:16,532 INFO L78 Accepts]: Start accepts. Automaton has 8471 states and 15100 transitions. Word has length 94 [2021-11-22 16:20:16,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:16,533 INFO L470 AbstractCegarLoop]: Abstraction has 8471 states and 15100 transitions. [2021-11-22 16:20:16,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:16,534 INFO L276 IsEmpty]: Start isEmpty. Operand 8471 states and 15100 transitions. [2021-11-22 16:20:16,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-22 16:20:16,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:16,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:16,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 16:20:16,556 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:16,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:16,557 INFO L85 PathProgramCache]: Analyzing trace with hash 428759843, now seen corresponding path program 1 times [2021-11-22 16:20:16,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:16,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936160417] [2021-11-22 16:20:16,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:16,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:16,619 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 16:20:16,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:16,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936160417] [2021-11-22 16:20:16,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936160417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:16,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:16,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:20:16,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532159972] [2021-11-22 16:20:16,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:16,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:20:16,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:16,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:20:16,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:20:16,623 INFO L87 Difference]: Start difference. First operand 8471 states and 15100 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 16:20:17,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:17,402 INFO L93 Difference]: Finished difference Result 20967 states and 37383 transitions. [2021-11-22 16:20:17,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:20:17,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-22 16:20:17,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:17,448 INFO L225 Difference]: With dead ends: 20967 [2021-11-22 16:20:17,448 INFO L226 Difference]: Without dead ends: 13652 [2021-11-22 16:20:17,463 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 16:20:17,464 INFO L933 BasicCegarLoop]: 1991 mSDtfsCounter, 1934 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1934 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:17,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1934 Valid, 3922 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:17,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13652 states. [2021-11-22 16:20:18,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13652 to 12777. [2021-11-22 16:20:18,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12777 states, 12771 states have (on average 1.78545141335839) internal successors, (22802), 12776 states have internal predecessors, (22802), 0 states have call successors, (0), 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 16:20:18,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12777 states to 12777 states and 22802 transitions. [2021-11-22 16:20:18,369 INFO L78 Accepts]: Start accepts. Automaton has 12777 states and 22802 transitions. Word has length 95 [2021-11-22 16:20:18,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:18,370 INFO L470 AbstractCegarLoop]: Abstraction has 12777 states and 22802 transitions. [2021-11-22 16:20:18,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 16:20:18,370 INFO L276 IsEmpty]: Start isEmpty. Operand 12777 states and 22802 transitions. [2021-11-22 16:20:18,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-22 16:20:18,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:18,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:18,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 16:20:18,399 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:18,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:18,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1390197577, now seen corresponding path program 1 times [2021-11-22 16:20:18,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:18,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245947091] [2021-11-22 16:20:18,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:18,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:18,490 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 16:20:18,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:18,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245947091] [2021-11-22 16:20:18,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245947091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:18,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:18,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:20:18,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960997793] [2021-11-22 16:20:18,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:18,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:20:18,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:18,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:20:18,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:20:18,494 INFO L87 Difference]: Start difference. First operand 12777 states and 22802 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:19,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:19,985 INFO L93 Difference]: Finished difference Result 32996 states and 58954 transitions. [2021-11-22 16:20:19,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:20:19,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-22 16:20:19,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:20,060 INFO L225 Difference]: With dead ends: 32996 [2021-11-22 16:20:20,061 INFO L226 Difference]: Without dead ends: 21843 [2021-11-22 16:20:20,080 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 16:20:20,081 INFO L933 BasicCegarLoop]: 1991 mSDtfsCounter, 1932 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1932 SdHoareTripleChecker+Valid, 3978 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:20,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1932 Valid, 3978 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:20,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21843 states. [2021-11-22 16:20:21,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21843 to 20968. [2021-11-22 16:20:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20968 states, 20962 states have (on average 1.7868046942085678) internal successors, (37455), 20967 states have internal predecessors, (37455), 0 states have call successors, (0), 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 16:20:21,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20968 states to 20968 states and 37455 transitions. [2021-11-22 16:20:21,511 INFO L78 Accepts]: Start accepts. Automaton has 20968 states and 37455 transitions. Word has length 96 [2021-11-22 16:20:21,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:21,512 INFO L470 AbstractCegarLoop]: Abstraction has 20968 states and 37455 transitions. [2021-11-22 16:20:21,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:21,512 INFO L276 IsEmpty]: Start isEmpty. Operand 20968 states and 37455 transitions. [2021-11-22 16:20:21,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-22 16:20:21,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:21,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:21,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 16:20:21,556 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:21,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:21,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1815690061, now seen corresponding path program 1 times [2021-11-22 16:20:21,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:21,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054580577] [2021-11-22 16:20:21,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:21,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:21,621 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 16:20:21,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:21,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054580577] [2021-11-22 16:20:21,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054580577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:21,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:21,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:20:21,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215117159] [2021-11-22 16:20:21,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:21,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:20:21,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:21,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:20:21,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:20:21,628 INFO L87 Difference]: Start difference. First operand 20968 states and 37455 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:23,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:23,290 INFO L93 Difference]: Finished difference Result 54732 states and 98067 transitions. [2021-11-22 16:20:23,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:20:23,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-22 16:20:23,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:23,432 INFO L225 Difference]: With dead ends: 54732 [2021-11-22 16:20:23,433 INFO L226 Difference]: Without dead ends: 36278 [2021-11-22 16:20:23,464 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 16:20:23,465 INFO L933 BasicCegarLoop]: 1991 mSDtfsCounter, 1930 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1930 SdHoareTripleChecker+Valid, 3969 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:23,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1930 Valid, 3969 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:23,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36278 states. [2021-11-22 16:20:25,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36278 to 35403. [2021-11-22 16:20:25,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35403 states, 35397 states have (on average 1.7907167274062774) internal successors, (63386), 35402 states have internal predecessors, (63386), 0 states have call successors, (0), 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 16:20:25,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35403 states to 35403 states and 63386 transitions. [2021-11-22 16:20:25,525 INFO L78 Accepts]: Start accepts. Automaton has 35403 states and 63386 transitions. Word has length 97 [2021-11-22 16:20:25,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:25,527 INFO L470 AbstractCegarLoop]: Abstraction has 35403 states and 63386 transitions. [2021-11-22 16:20:25,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:25,527 INFO L276 IsEmpty]: Start isEmpty. Operand 35403 states and 63386 transitions. [2021-11-22 16:20:25,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 16:20:25,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:25,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:25,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 16:20:25,573 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:25,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:25,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1639165845, now seen corresponding path program 1 times [2021-11-22 16:20:25,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:25,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889777965] [2021-11-22 16:20:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:25,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:25,629 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 16:20:25,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:25,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889777965] [2021-11-22 16:20:25,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889777965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:25,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:25,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:20:25,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478074220] [2021-11-22 16:20:25,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:25,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:20:25,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:25,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:20:25,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:20:25,633 INFO L87 Difference]: Start difference. First operand 35403 states and 63386 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:27,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:27,863 INFO L93 Difference]: Finished difference Result 88454 states and 157966 transitions. [2021-11-22 16:20:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:20:27,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-22 16:20:27,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:28,137 INFO L225 Difference]: With dead ends: 88454 [2021-11-22 16:20:28,137 INFO L226 Difference]: Without dead ends: 57773 [2021-11-22 16:20:28,200 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 16:20:28,201 INFO L933 BasicCegarLoop]: 1991 mSDtfsCounter, 1928 mSDsluCounter, 1904 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 3895 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:28,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1928 Valid, 3895 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:28,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57773 states. [2021-11-22 16:20:31,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57773 to 56898. [2021-11-22 16:20:31,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56898 states, 56892 states have (on average 1.78046122477677) internal successors, (101294), 56897 states have internal predecessors, (101294), 0 states have call successors, (0), 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 16:20:31,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56898 states to 56898 states and 101294 transitions. [2021-11-22 16:20:31,448 INFO L78 Accepts]: Start accepts. Automaton has 56898 states and 101294 transitions. Word has length 98 [2021-11-22 16:20:31,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:31,448 INFO L470 AbstractCegarLoop]: Abstraction has 56898 states and 101294 transitions. [2021-11-22 16:20:31,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:31,449 INFO L276 IsEmpty]: Start isEmpty. Operand 56898 states and 101294 transitions. [2021-11-22 16:20:31,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-22 16:20:31,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:31,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:31,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 16:20:31,487 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:31,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:31,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1265166849, now seen corresponding path program 1 times [2021-11-22 16:20:31,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:31,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542030452] [2021-11-22 16:20:31,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:31,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:31,543 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 16:20:31,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:31,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542030452] [2021-11-22 16:20:31,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542030452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:31,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:31,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:20:31,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261291543] [2021-11-22 16:20:31,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:31,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:20:31,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:31,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:20:31,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:20:31,546 INFO L87 Difference]: Start difference. First operand 56898 states and 101294 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 16:20:35,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:35,535 INFO L93 Difference]: Finished difference Result 146615 states and 260975 transitions. [2021-11-22 16:20:35,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:20:35,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-22 16:20:35,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:35,936 INFO L225 Difference]: With dead ends: 146615 [2021-11-22 16:20:35,936 INFO L226 Difference]: Without dead ends: 96742 [2021-11-22 16:20:36,020 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 16:20:36,021 INFO L933 BasicCegarLoop]: 1991 mSDtfsCounter, 1926 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1926 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:36,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1926 Valid, 3922 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:36,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96742 states. [2021-11-22 16:20:40,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96742 to 95867. [2021-11-22 16:20:40,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95867 states, 95861 states have (on average 1.7765514651422372) internal successors, (170302), 95866 states have internal predecessors, (170302), 0 states have call successors, (0), 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 16:20:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95867 states to 95867 states and 170302 transitions. [2021-11-22 16:20:40,840 INFO L78 Accepts]: Start accepts. Automaton has 95867 states and 170302 transitions. Word has length 99 [2021-11-22 16:20:40,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:40,841 INFO L470 AbstractCegarLoop]: Abstraction has 95867 states and 170302 transitions. [2021-11-22 16:20:40,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 16:20:40,841 INFO L276 IsEmpty]: Start isEmpty. Operand 95867 states and 170302 transitions. [2021-11-22 16:20:40,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-22 16:20:40,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:40,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:40,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 16:20:40,873 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:20:40,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:40,874 INFO L85 PathProgramCache]: Analyzing trace with hash -67666419, now seen corresponding path program 1 times [2021-11-22 16:20:40,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:20:40,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478505413] [2021-11-22 16:20:40,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:40,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:20:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:40,927 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 16:20:40,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:20:40,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478505413] [2021-11-22 16:20:40,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478505413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:40,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:40,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:20:40,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659746748] [2021-11-22 16:20:40,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:40,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:20:40,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:20:40,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:20:40,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:20:40,930 INFO L87 Difference]: Start difference. First operand 95867 states and 170302 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 16:20:48,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:48,187 INFO L93 Difference]: Finished difference Result 264412 states and 470867 transitions. [2021-11-22 16:20:48,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:20:48,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-22 16:20:48,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:48,567 INFO L225 Difference]: With dead ends: 264412 [2021-11-22 16:20:48,567 INFO L226 Difference]: Without dead ends: 177550 [2021-11-22 16:20:48,651 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 16:20:48,654 INFO L933 BasicCegarLoop]: 1991 mSDtfsCounter, 1924 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 3969 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:48,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1924 Valid, 3969 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:48,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177550 states.