./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product31.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_bdae0771-7a03-4bf5-8078-203b058a18c1/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdae0771-7a03-4bf5-8078-203b058a18c1/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_bdae0771-7a03-4bf5-8078-203b058a18c1/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdae0771-7a03-4bf5-8078-203b058a18c1/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdae0771-7a03-4bf5-8078-203b058a18c1/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_bdae0771-7a03-4bf5-8078-203b058a18c1/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 21dc9f7e2ddd4ffb05ac36477bf46e7266bc68ad137742c8de338dbab6571869 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:13:49,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:13:49,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:13:49,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:13:49,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:13:49,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:13:49,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:13:49,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:13:49,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:13:49,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:13:49,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:13:49,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:13:49,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:13:49,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:13:49,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:13:49,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:13:49,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:13:49,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:13:49,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:13:49,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:13:49,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:13:49,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:13:49,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:13:49,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:13:49,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:13:49,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:13:49,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:13:49,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:13:49,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:13:49,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:13:49,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:13:49,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:13:49,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:13:49,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:13:49,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:13:49,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:13:49,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:13:49,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:13:49,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:13:49,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:13:49,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:13:49,747 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdae0771-7a03-4bf5-8078-203b058a18c1/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:13:49,774 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:13:49,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:13:49,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:13:49,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:13:49,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:13:49,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:13:49,776 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:13:49,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:13:49,777 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:13:49,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:13:49,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:13:49,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:13:49,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:13:49,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:13:49,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:13:49,779 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:13:49,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:13:49,779 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:13:49,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:13:49,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:13:49,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:13:49,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:13:49,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:13:49,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:13:49,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:13:49,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:13:49,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:13:49,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:13:49,782 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:13:49,782 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:13:49,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:13:49,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:13:49,783 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_bdae0771-7a03-4bf5-8078-203b058a18c1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdae0771-7a03-4bf5-8078-203b058a18c1/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21dc9f7e2ddd4ffb05ac36477bf46e7266bc68ad137742c8de338dbab6571869 [2021-11-22 15:13:50,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:13:50,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:13:50,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:13:50,062 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:13:50,063 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:13:50,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdae0771-7a03-4bf5-8078-203b058a18c1/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c [2021-11-22 15:13:50,138 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdae0771-7a03-4bf5-8078-203b058a18c1/bin/uautomizer-w2VwFs6gM0/data/ecff05949/01049211ba084b7f819132e226417949/FLAG39c61e370 [2021-11-22 15:13:50,798 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:13:50,801 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdae0771-7a03-4bf5-8078-203b058a18c1/sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c [2021-11-22 15:13:50,840 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdae0771-7a03-4bf5-8078-203b058a18c1/bin/uautomizer-w2VwFs6gM0/data/ecff05949/01049211ba084b7f819132e226417949/FLAG39c61e370 [2021-11-22 15:13:50,972 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdae0771-7a03-4bf5-8078-203b058a18c1/bin/uautomizer-w2VwFs6gM0/data/ecff05949/01049211ba084b7f819132e226417949 [2021-11-22 15:13:50,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:13:50,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:13:50,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:13:50,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:13:50,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:13:50,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:13:50" (1/1) ... [2021-11-22 15:13:50,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac2c283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:50, skipping insertion in model container [2021-11-22 15:13:50,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:13:50" (1/1) ... [2021-11-22 15:13:50,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:13:51,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:13:51,333 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_bdae0771-7a03-4bf5-8078-203b058a18c1/sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c[5910,5923] [2021-11-22 15:13:51,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:13:51,711 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:13:51,729 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_bdae0771-7a03-4bf5-8078-203b058a18c1/sv-benchmarks/c/product-lines/elevator_spec9_product31.cil.c[5910,5923] [2021-11-22 15:13:51,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:13:51,842 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:13:51,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:51 WrapperNode [2021-11-22 15:13:51,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:13:51,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:13:51,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:13:51,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:13:51,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:51" (1/1) ... [2021-11-22 15:13:51,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:51" (1/1) ... [2021-11-22 15:13:52,139 INFO L137 Inliner]: procedures = 97, calls = 346, calls flagged for inlining = 199, calls inlined = 440, statements flattened = 14550 [2021-11-22 15:13:52,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:13:52,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:13:52,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:13:52,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:13:52,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:51" (1/1) ... [2021-11-22 15:13:52,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:51" (1/1) ... [2021-11-22 15:13:52,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:51" (1/1) ... [2021-11-22 15:13:52,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:51" (1/1) ... [2021-11-22 15:13:52,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:51" (1/1) ... [2021-11-22 15:13:52,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:51" (1/1) ... [2021-11-22 15:13:52,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:51" (1/1) ... [2021-11-22 15:13:52,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:13:52,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:13:52,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:13:52,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:13:52,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:51" (1/1) ... [2021-11-22 15:13:52,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:13:52,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdae0771-7a03-4bf5-8078-203b058a18c1/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:52,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdae0771-7a03-4bf5-8078-203b058a18c1/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:13:52,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdae0771-7a03-4bf5-8078-203b058a18c1/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:13:52,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:13:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:13:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:13:52,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:13:52,958 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:13:52,960 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:13:58,674 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:13:58,726 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:13:58,727 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:13:58,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:13:58 BoogieIcfgContainer [2021-11-22 15:13:58,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:13:58,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:13:58,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:13:58,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:13:58,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:13:50" (1/3) ... [2021-11-22 15:13:58,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4d66d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:13:58, skipping insertion in model container [2021-11-22 15:13:58,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:13:51" (2/3) ... [2021-11-22 15:13:58,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4d66d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:13:58, skipping insertion in model container [2021-11-22 15:13:58,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:13:58" (3/3) ... [2021-11-22 15:13:58,742 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product31.cil.c [2021-11-22 15:13:58,748 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:13:58,748 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-22 15:13:58,817 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:13:58,824 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:13:58,825 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-22 15:13:58,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 3748 states, 3742 states have (on average 1.869855692143239) internal successors, (6997), 3747 states have internal predecessors, (6997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:58,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-22 15:13:58,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:58,959 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] [2021-11-22 15:13:58,960 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:13:58,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:58,966 INFO L85 PathProgramCache]: Analyzing trace with hash 143075657, now seen corresponding path program 1 times [2021-11-22 15:13:58,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:58,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186989019] [2021-11-22 15:13:58,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:58,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:59,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:59,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186989019] [2021-11-22 15:13:59,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186989019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:59,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:59,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:13:59,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044462941] [2021-11-22 15:13:59,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:59,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:13:59,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:59,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:13:59,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:13:59,385 INFO L87 Difference]: Start difference. First operand has 3748 states, 3742 states have (on average 1.869855692143239) internal successors, (6997), 3747 states have internal predecessors, (6997), 0 states have call successors, (0), 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 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:59,761 INFO L93 Difference]: Finished difference Result 7481 states and 13971 transitions. [2021-11-22 15:13:59,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:13:59,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-22 15:13:59,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:59,813 INFO L225 Difference]: With dead ends: 7481 [2021-11-22 15:13:59,814 INFO L226 Difference]: Without dead ends: 3737 [2021-11-22 15:13:59,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:13:59,837 INFO L933 BasicCegarLoop]: 6976 mSDtfsCounter, 6970 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6970 SdHoareTripleChecker+Valid, 6987 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:59,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6970 Valid, 6987 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:13:59,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-11-22 15:14:00,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3737. [2021-11-22 15:14:00,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 3732 states have (on average 1.8681672025723473) internal successors, (6972), 3736 states have internal predecessors, (6972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:00,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 6972 transitions. [2021-11-22 15:14:00,092 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 6972 transitions. Word has length 50 [2021-11-22 15:14:00,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:00,093 INFO L470 AbstractCegarLoop]: Abstraction has 3737 states and 6972 transitions. [2021-11-22 15:14:00,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:00,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 6972 transitions. [2021-11-22 15:14:00,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 15:14:00,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:00,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:00,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:14:00,104 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:00,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:00,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1606224983, now seen corresponding path program 1 times [2021-11-22 15:14:00,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:00,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595538215] [2021-11-22 15:14:00,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:00,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:00,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:00,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595538215] [2021-11-22 15:14:00,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595538215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:00,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:00,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:14:00,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083640750] [2021-11-22 15:14:00,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:00,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:14:00,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:00,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:14:00,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:14:00,286 INFO L87 Difference]: Start difference. First operand 3737 states and 6972 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:00,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:00,595 INFO L93 Difference]: Finished difference Result 7424 states and 13859 transitions. [2021-11-22 15:14:00,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:14:00,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-22 15:14:00,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:00,622 INFO L225 Difference]: With dead ends: 7424 [2021-11-22 15:14:00,623 INFO L226 Difference]: Without dead ends: 3737 [2021-11-22 15:14:00,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:00,638 INFO L933 BasicCegarLoop]: 6906 mSDtfsCounter, 13910 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13910 SdHoareTripleChecker+Valid, 6921 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:00,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13910 Valid, 6921 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:14:00,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-11-22 15:14:00,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3737. [2021-11-22 15:14:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 3732 states have (on average 1.8668274383708467) internal successors, (6967), 3736 states have internal predecessors, (6967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:00,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 6967 transitions. [2021-11-22 15:14:00,875 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 6967 transitions. Word has length 57 [2021-11-22 15:14:00,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:00,876 INFO L470 AbstractCegarLoop]: Abstraction has 3737 states and 6967 transitions. [2021-11-22 15:14:00,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:00,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 6967 transitions. [2021-11-22 15:14:00,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-22 15:14:00,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:00,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:00,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:14:00,886 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:00,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:00,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1273457461, now seen corresponding path program 1 times [2021-11-22 15:14:00,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:00,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413823826] [2021-11-22 15:14:00,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:00,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:01,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:01,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413823826] [2021-11-22 15:14:01,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413823826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:01,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:01,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:14:01,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696960017] [2021-11-22 15:14:01,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:01,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:14:01,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:01,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:14:01,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:14:01,014 INFO L87 Difference]: Start difference. First operand 3737 states and 6967 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:01,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:01,272 INFO L93 Difference]: Finished difference Result 7424 states and 13854 transitions. [2021-11-22 15:14:01,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:14:01,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-22 15:14:01,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:01,298 INFO L225 Difference]: With dead ends: 7424 [2021-11-22 15:14:01,298 INFO L226 Difference]: Without dead ends: 3737 [2021-11-22 15:14:01,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:01,305 INFO L933 BasicCegarLoop]: 6906 mSDtfsCounter, 13898 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13898 SdHoareTripleChecker+Valid, 6921 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:01,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13898 Valid, 6921 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:14:01,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-11-22 15:14:01,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3737. [2021-11-22 15:14:01,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 3732 states have (on average 1.8654876741693462) internal successors, (6962), 3736 states have internal predecessors, (6962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:01,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 6962 transitions. [2021-11-22 15:14:01,452 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 6962 transitions. Word has length 58 [2021-11-22 15:14:01,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:01,452 INFO L470 AbstractCegarLoop]: Abstraction has 3737 states and 6962 transitions. [2021-11-22 15:14:01,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:01,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 6962 transitions. [2021-11-22 15:14:01,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 15:14:01,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:01,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:01,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:14:01,458 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:01,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash -635965714, now seen corresponding path program 1 times [2021-11-22 15:14:01,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:01,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731061347] [2021-11-22 15:14:01,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:01,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:01,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:01,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:01,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731061347] [2021-11-22 15:14:01,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731061347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:01,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:01,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:14:01,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841166006] [2021-11-22 15:14:01,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:01,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:14:01,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:01,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:14:01,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:14:01,550 INFO L87 Difference]: Start difference. First operand 3737 states and 6962 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:01,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:01,908 INFO L93 Difference]: Finished difference Result 7424 states and 13849 transitions. [2021-11-22 15:14:01,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:14:01,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-22 15:14:01,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:01,933 INFO L225 Difference]: With dead ends: 7424 [2021-11-22 15:14:01,933 INFO L226 Difference]: Without dead ends: 3737 [2021-11-22 15:14:01,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:01,948 INFO L933 BasicCegarLoop]: 6906 mSDtfsCounter, 13886 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13886 SdHoareTripleChecker+Valid, 6921 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:01,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13886 Valid, 6921 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:14:01,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-11-22 15:14:02,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3737. [2021-11-22 15:14:02,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 3732 states have (on average 1.8641479099678457) internal successors, (6957), 3736 states have internal predecessors, (6957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:02,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 6957 transitions. [2021-11-22 15:14:02,135 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 6957 transitions. Word has length 59 [2021-11-22 15:14:02,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:02,137 INFO L470 AbstractCegarLoop]: Abstraction has 3737 states and 6957 transitions. [2021-11-22 15:14:02,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:02,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 6957 transitions. [2021-11-22 15:14:02,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 15:14:02,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:02,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:02,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:14:02,145 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:02,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:02,147 INFO L85 PathProgramCache]: Analyzing trace with hash 858042416, now seen corresponding path program 1 times [2021-11-22 15:14:02,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:02,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335422644] [2021-11-22 15:14:02,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:02,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:02,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:02,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:02,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335422644] [2021-11-22 15:14:02,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335422644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:02,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:02,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:14:02,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223170233] [2021-11-22 15:14:02,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:02,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:14:02,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:02,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:14:02,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:14:02,253 INFO L87 Difference]: Start difference. First operand 3737 states and 6957 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:02,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:02,534 INFO L93 Difference]: Finished difference Result 7424 states and 13844 transitions. [2021-11-22 15:14:02,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:14:02,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-22 15:14:02,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:02,560 INFO L225 Difference]: With dead ends: 7424 [2021-11-22 15:14:02,560 INFO L226 Difference]: Without dead ends: 3737 [2021-11-22 15:14:02,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:02,567 INFO L933 BasicCegarLoop]: 6906 mSDtfsCounter, 13874 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13874 SdHoareTripleChecker+Valid, 6921 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:02,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13874 Valid, 6921 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:14:02,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-11-22 15:14:02,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3737. [2021-11-22 15:14:02,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 3732 states have (on average 1.862808145766345) internal successors, (6952), 3736 states have internal predecessors, (6952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 6952 transitions. [2021-11-22 15:14:02,724 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 6952 transitions. Word has length 60 [2021-11-22 15:14:02,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:02,725 INFO L470 AbstractCegarLoop]: Abstraction has 3737 states and 6952 transitions. [2021-11-22 15:14:02,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:02,726 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 6952 transitions. [2021-11-22 15:14:02,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 15:14:02,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:02,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:02,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:14:02,734 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:02,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:02,735 INFO L85 PathProgramCache]: Analyzing trace with hash -343208175, now seen corresponding path program 1 times [2021-11-22 15:14:02,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:02,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851609587] [2021-11-22 15:14:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:02,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:02,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:02,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851609587] [2021-11-22 15:14:02,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851609587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:02,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:02,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:14:02,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762998970] [2021-11-22 15:14:02,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:02,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:14:02,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:02,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:14:02,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:14:02,805 INFO L87 Difference]: Start difference. First operand 3737 states and 6952 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:03,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:03,639 INFO L93 Difference]: Finished difference Result 14786 states and 27591 transitions. [2021-11-22 15:14:03,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:14:03,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-22 15:14:03,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:03,705 INFO L225 Difference]: With dead ends: 14786 [2021-11-22 15:14:03,705 INFO L226 Difference]: Without dead ends: 11105 [2021-11-22 15:14:03,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:03,716 INFO L933 BasicCegarLoop]: 13810 mSDtfsCounter, 20691 mSDsluCounter, 20709 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20691 SdHoareTripleChecker+Valid, 34519 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:03,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20691 Valid, 34519 Invalid, 40 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:14:03,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11105 states. [2021-11-22 15:14:03,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11105 to 3739. [2021-11-22 15:14:03,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3739 states, 3734 states have (on average 1.8623460096411355) internal successors, (6954), 3738 states have internal predecessors, (6954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 6954 transitions. [2021-11-22 15:14:04,011 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 6954 transitions. Word has length 60 [2021-11-22 15:14:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:04,011 INFO L470 AbstractCegarLoop]: Abstraction has 3739 states and 6954 transitions. [2021-11-22 15:14:04,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:04,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 6954 transitions. [2021-11-22 15:14:04,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-22 15:14:04,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:04,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:04,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:14:04,017 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:04,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:04,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1160712653, now seen corresponding path program 1 times [2021-11-22 15:14:04,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:04,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83446978] [2021-11-22 15:14:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:04,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:04,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:04,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83446978] [2021-11-22 15:14:04,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83446978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:04,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:04,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:14:04,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939835953] [2021-11-22 15:14:04,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:04,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:14:04,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:04,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:14:04,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:14:04,099 INFO L87 Difference]: Start difference. First operand 3739 states and 6954 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:04,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:04,426 INFO L93 Difference]: Finished difference Result 7428 states and 13843 transitions. [2021-11-22 15:14:04,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:14:04,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-22 15:14:04,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:04,438 INFO L225 Difference]: With dead ends: 7428 [2021-11-22 15:14:04,438 INFO L226 Difference]: Without dead ends: 3739 [2021-11-22 15:14:04,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:04,445 INFO L933 BasicCegarLoop]: 6906 mSDtfsCounter, 13862 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13862 SdHoareTripleChecker+Valid, 6921 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:04,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13862 Valid, 6921 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:14:04,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3739 states. [2021-11-22 15:14:04,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3739 to 3739. [2021-11-22 15:14:04,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3739 states, 3734 states have (on average 1.8610069630423138) internal successors, (6949), 3738 states have internal predecessors, (6949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 6949 transitions. [2021-11-22 15:14:04,625 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 6949 transitions. Word has length 61 [2021-11-22 15:14:04,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:04,625 INFO L470 AbstractCegarLoop]: Abstraction has 3739 states and 6949 transitions. [2021-11-22 15:14:04,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:04,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 6949 transitions. [2021-11-22 15:14:04,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-22 15:14:04,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:04,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:04,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:14:04,630 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:04,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:04,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1386266224, now seen corresponding path program 1 times [2021-11-22 15:14:04,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:04,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109500849] [2021-11-22 15:14:04,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:04,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:04,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:04,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:04,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109500849] [2021-11-22 15:14:04,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109500849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:04,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:04,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:14:04,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825953177] [2021-11-22 15:14:04,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:04,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:14:04,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:04,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:14:04,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:14:04,680 INFO L87 Difference]: Start difference. First operand 3739 states and 6949 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:05,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:05,421 INFO L93 Difference]: Finished difference Result 14788 states and 27587 transitions. [2021-11-22 15:14:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:14:05,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-22 15:14:05,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:05,459 INFO L225 Difference]: With dead ends: 14788 [2021-11-22 15:14:05,459 INFO L226 Difference]: Without dead ends: 11107 [2021-11-22 15:14:05,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:05,470 INFO L933 BasicCegarLoop]: 6931 mSDtfsCounter, 20683 mSDsluCounter, 20706 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20683 SdHoareTripleChecker+Valid, 27637 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:05,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20683 Valid, 27637 Invalid, 37 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:14:05,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11107 states. [2021-11-22 15:14:05,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11107 to 3742. [2021-11-22 15:14:05,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3737 states have (on average 1.8603157613058603) internal successors, (6952), 3741 states have internal predecessors, (6952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:05,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6952 transitions. [2021-11-22 15:14:05,743 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6952 transitions. Word has length 61 [2021-11-22 15:14:05,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:05,744 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6952 transitions. [2021-11-22 15:14:05,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:05,745 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6952 transitions. [2021-11-22 15:14:05,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-22 15:14:05,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:05,749 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] [2021-11-22 15:14:05,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:14:05,749 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:05,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:05,750 INFO L85 PathProgramCache]: Analyzing trace with hash 17669527, now seen corresponding path program 1 times [2021-11-22 15:14:05,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:05,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558798697] [2021-11-22 15:14:05,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:05,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:05,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:05,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:05,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558798697] [2021-11-22 15:14:05,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558798697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:05,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:05,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:14:05,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778559977] [2021-11-22 15:14:05,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:05,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:14:05,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:05,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:14:05,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:14:05,819 INFO L87 Difference]: Start difference. First operand 3742 states and 6952 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:06,090 INFO L93 Difference]: Finished difference Result 7434 states and 13844 transitions. [2021-11-22 15:14:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:14:06,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-22 15:14:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:06,102 INFO L225 Difference]: With dead ends: 7434 [2021-11-22 15:14:06,102 INFO L226 Difference]: Without dead ends: 3742 [2021-11-22 15:14:06,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:14:06,110 INFO L933 BasicCegarLoop]: 6912 mSDtfsCounter, 6921 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6921 SdHoareTripleChecker+Valid, 6926 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:06,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6921 Valid, 6926 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:14:06,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-11-22 15:14:06,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3742. [2021-11-22 15:14:06,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3737 states have (on average 1.858977789670859) internal successors, (6947), 3741 states have internal predecessors, (6947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:06,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6947 transitions. [2021-11-22 15:14:06,301 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6947 transitions. Word has length 62 [2021-11-22 15:14:06,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:06,301 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6947 transitions. [2021-11-22 15:14:06,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:06,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6947 transitions. [2021-11-22 15:14:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-22 15:14:06,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:06,311 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] [2021-11-22 15:14:06,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:14:06,312 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:06,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:06,312 INFO L85 PathProgramCache]: Analyzing trace with hash -405977195, now seen corresponding path program 1 times [2021-11-22 15:14:06,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:06,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398591333] [2021-11-22 15:14:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:06,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:06,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:06,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:06,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398591333] [2021-11-22 15:14:06,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398591333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:06,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:06,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:14:06,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142965129] [2021-11-22 15:14:06,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:06,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:14:06,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:06,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:14:06,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:14:06,392 INFO L87 Difference]: Start difference. First operand 3742 states and 6947 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:08,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:08,278 INFO L93 Difference]: Finished difference Result 10181 states and 18926 transitions. [2021-11-22 15:14:08,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:14:08,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-22 15:14:08,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:08,298 INFO L225 Difference]: With dead ends: 10181 [2021-11-22 15:14:08,299 INFO L226 Difference]: Without dead ends: 6508 [2021-11-22 15:14:08,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:08,308 INFO L933 BasicCegarLoop]: 6997 mSDtfsCounter, 17037 mSDsluCounter, 5078 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17037 SdHoareTripleChecker+Valid, 12075 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:08,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17037 Valid, 12075 Invalid, 1533 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [320 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-22 15:14:08,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-11-22 15:14:08,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 3742. [2021-11-22 15:14:08,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3737 states have (on average 1.8175006689858175) internal successors, (6792), 3741 states have internal predecessors, (6792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:08,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6792 transitions. [2021-11-22 15:14:08,556 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6792 transitions. Word has length 62 [2021-11-22 15:14:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:08,556 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6792 transitions. [2021-11-22 15:14:08,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:08,556 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6792 transitions. [2021-11-22 15:14:08,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-22 15:14:08,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:08,561 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] [2021-11-22 15:14:08,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:14:08,562 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:08,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:08,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1144130263, now seen corresponding path program 1 times [2021-11-22 15:14:08,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:08,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320326758] [2021-11-22 15:14:08,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:08,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:08,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:08,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:08,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320326758] [2021-11-22 15:14:08,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320326758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:08,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:08,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:14:08,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804245316] [2021-11-22 15:14:08,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:08,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:14:08,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:08,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:14:08,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:14:08,652 INFO L87 Difference]: Start difference. First operand 3742 states and 6792 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:13,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:13,671 INFO L93 Difference]: Finished difference Result 28251 states and 51988 transitions. [2021-11-22 15:14:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:14:13,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-22 15:14:13,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:13,744 INFO L225 Difference]: With dead ends: 28251 [2021-11-22 15:14:13,744 INFO L226 Difference]: Without dead ends: 24605 [2021-11-22 15:14:13,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:14:13,757 INFO L933 BasicCegarLoop]: 17007 mSDtfsCounter, 49935 mSDsluCounter, 78836 mSDsCounter, 0 mSdLazyCounter, 3211 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49935 SdHoareTripleChecker+Valid, 95843 SdHoareTripleChecker+Invalid, 3476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 3211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:13,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49935 Valid, 95843 Invalid, 3476 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [265 Valid, 3211 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-22 15:14:13,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24605 states. [2021-11-22 15:14:14,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24605 to 7354. [2021-11-22 15:14:14,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7354 states, 7349 states have (on average 1.8240576949244796) internal successors, (13405), 7353 states have internal predecessors, (13405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:14,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7354 states to 7354 states and 13405 transitions. [2021-11-22 15:14:14,410 INFO L78 Accepts]: Start accepts. Automaton has 7354 states and 13405 transitions. Word has length 70 [2021-11-22 15:14:14,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:14,410 INFO L470 AbstractCegarLoop]: Abstraction has 7354 states and 13405 transitions. [2021-11-22 15:14:14,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:14,411 INFO L276 IsEmpty]: Start isEmpty. Operand 7354 states and 13405 transitions. [2021-11-22 15:14:14,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-22 15:14:14,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:14,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:14,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:14:14,419 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:14,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:14,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1075727633, now seen corresponding path program 1 times [2021-11-22 15:14:14,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:14,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639710184] [2021-11-22 15:14:14,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:14,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:14,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:14,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639710184] [2021-11-22 15:14:14,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639710184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:14,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:14,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:14:14,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51209949] [2021-11-22 15:14:14,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:14,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:14:14,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:14,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:14:14,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:14:14,477 INFO L87 Difference]: Start difference. First operand 7354 states and 13405 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 15:14:15,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:15,257 INFO L93 Difference]: Finished difference Result 19653 states and 35932 transitions. [2021-11-22 15:14:15,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:14:15,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 15:14:15,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:15,297 INFO L225 Difference]: With dead ends: 19653 [2021-11-22 15:14:15,297 INFO L226 Difference]: Without dead ends: 13489 [2021-11-22 15:14:15,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:14:15,310 INFO L933 BasicCegarLoop]: 6777 mSDtfsCounter, 19926 mSDsluCounter, 20101 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19926 SdHoareTripleChecker+Valid, 26878 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:15,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19926 Valid, 26878 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:14:15,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13489 states. [2021-11-22 15:14:15,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13489 to 7360. [2021-11-22 15:14:15,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7360 states, 7355 states have (on average 1.8236573759347383) internal successors, (13413), 7359 states have internal predecessors, (13413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:15,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7360 states to 7360 states and 13413 transitions. [2021-11-22 15:14:15,828 INFO L78 Accepts]: Start accepts. Automaton has 7360 states and 13413 transitions. Word has length 72 [2021-11-22 15:14:15,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:15,829 INFO L470 AbstractCegarLoop]: Abstraction has 7360 states and 13413 transitions. [2021-11-22 15:14:15,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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 15:14:15,829 INFO L276 IsEmpty]: Start isEmpty. Operand 7360 states and 13413 transitions. [2021-11-22 15:14:15,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-22 15:14:15,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:15,835 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] [2021-11-22 15:14:15,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:14:15,836 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:15,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:15,836 INFO L85 PathProgramCache]: Analyzing trace with hash -487844393, now seen corresponding path program 1 times [2021-11-22 15:14:15,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:15,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323458920] [2021-11-22 15:14:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:15,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:15,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:15,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323458920] [2021-11-22 15:14:15,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323458920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:15,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:15,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:14:15,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959648005] [2021-11-22 15:14:15,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:15,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:14:15,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:15,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:14:15,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:14:15,916 INFO L87 Difference]: Start difference. First operand 7360 states and 13413 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:16,304 INFO L93 Difference]: Finished difference Result 13042 states and 23681 transitions. [2021-11-22 15:14:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:14:16,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-22 15:14:16,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:16,325 INFO L225 Difference]: With dead ends: 13042 [2021-11-22 15:14:16,325 INFO L226 Difference]: Without dead ends: 7667 [2021-11-22 15:14:16,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:14:16,335 INFO L933 BasicCegarLoop]: 7064 mSDtfsCounter, 3813 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3813 SdHoareTripleChecker+Valid, 10268 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:16,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3813 Valid, 10268 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:14:16,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7667 states. [2021-11-22 15:14:16,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7667 to 7650. [2021-11-22 15:14:16,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7650 states, 7645 states have (on average 1.8177894048397645) internal successors, (13897), 7649 states have internal predecessors, (13897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:16,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7650 states to 7650 states and 13897 transitions. [2021-11-22 15:14:16,746 INFO L78 Accepts]: Start accepts. Automaton has 7650 states and 13897 transitions. Word has length 73 [2021-11-22 15:14:16,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:16,746 INFO L470 AbstractCegarLoop]: Abstraction has 7650 states and 13897 transitions. [2021-11-22 15:14:16,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:16,747 INFO L276 IsEmpty]: Start isEmpty. Operand 7650 states and 13897 transitions. [2021-11-22 15:14:16,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-22 15:14:16,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:16,753 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] [2021-11-22 15:14:16,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:14:16,753 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:16,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:16,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1189444267, now seen corresponding path program 1 times [2021-11-22 15:14:16,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:16,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144001757] [2021-11-22 15:14:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:16,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:16,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:16,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:16,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144001757] [2021-11-22 15:14:16,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144001757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:16,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:16,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:14:16,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587105330] [2021-11-22 15:14:16,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:16,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:14:16,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:16,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:14:16,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:14:16,849 INFO L87 Difference]: Start difference. First operand 7650 states and 13897 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:20,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:20,338 INFO L93 Difference]: Finished difference Result 24205 states and 44316 transitions. [2021-11-22 15:14:20,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 15:14:20,339 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-22 15:14:20,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:20,418 INFO L225 Difference]: With dead ends: 24205 [2021-11-22 15:14:20,418 INFO L226 Difference]: Without dead ends: 21807 [2021-11-22 15:14:20,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:14:20,426 INFO L933 BasicCegarLoop]: 11699 mSDtfsCounter, 49344 mSDsluCounter, 57804 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49344 SdHoareTripleChecker+Valid, 69503 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:20,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49344 Valid, 69503 Invalid, 2498 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [317 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-22 15:14:20,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21807 states. [2021-11-22 15:14:20,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21807 to 7646. [2021-11-22 15:14:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7646 states, 7641 states have (on average 1.8176940191074467) internal successors, (13889), 7645 states have internal predecessors, (13889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7646 states to 7646 states and 13889 transitions. [2021-11-22 15:14:20,978 INFO L78 Accepts]: Start accepts. Automaton has 7646 states and 13889 transitions. Word has length 73 [2021-11-22 15:14:20,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:20,978 INFO L470 AbstractCegarLoop]: Abstraction has 7646 states and 13889 transitions. [2021-11-22 15:14:20,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:20,979 INFO L276 IsEmpty]: Start isEmpty. Operand 7646 states and 13889 transitions. [2021-11-22 15:14:20,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-22 15:14:20,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:20,986 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 15:14:20,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:14:20,987 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:20,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:20,987 INFO L85 PathProgramCache]: Analyzing trace with hash 740069753, now seen corresponding path program 1 times [2021-11-22 15:14:20,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:20,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104704247] [2021-11-22 15:14:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:20,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:21,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:21,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104704247] [2021-11-22 15:14:21,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104704247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:21,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:21,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:14:21,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151081056] [2021-11-22 15:14:21,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:21,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:14:21,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:21,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:14:21,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:14:21,037 INFO L87 Difference]: Start difference. First operand 7646 states and 13889 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 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 15:14:21,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:21,552 INFO L93 Difference]: Finished difference Result 15626 states and 28359 transitions. [2021-11-22 15:14:21,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:14:21,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 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 15:14:21,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:21,579 INFO L225 Difference]: With dead ends: 15626 [2021-11-22 15:14:21,580 INFO L226 Difference]: Without dead ends: 11623 [2021-11-22 15:14:21,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:14:21,587 INFO L933 BasicCegarLoop]: 6762 mSDtfsCounter, 6687 mSDsluCounter, 3424 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6687 SdHoareTripleChecker+Valid, 10186 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:21,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6687 Valid, 10186 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:14:21,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11623 states. [2021-11-22 15:14:22,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11623 to 11602. [2021-11-22 15:14:22,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11602 states, 11597 states have (on average 1.8159006639648185) internal successors, (21059), 11601 states have internal predecessors, (21059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11602 states to 11602 states and 21059 transitions. [2021-11-22 15:14:22,147 INFO L78 Accepts]: Start accepts. Automaton has 11602 states and 21059 transitions. Word has length 78 [2021-11-22 15:14:22,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:22,147 INFO L470 AbstractCegarLoop]: Abstraction has 11602 states and 21059 transitions. [2021-11-22 15:14:22,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 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 15:14:22,148 INFO L276 IsEmpty]: Start isEmpty. Operand 11602 states and 21059 transitions. [2021-11-22 15:14:22,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 15:14:22,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:22,156 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 15:14:22,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:14:22,156 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:22,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:22,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1133445940, now seen corresponding path program 1 times [2021-11-22 15:14:22,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:22,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815690776] [2021-11-22 15:14:22,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:22,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:22,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:22,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815690776] [2021-11-22 15:14:22,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815690776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:22,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:22,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:14:22,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131093087] [2021-11-22 15:14:22,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:22,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:14:22,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:22,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:14:22,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:14:22,231 INFO L87 Difference]: Start difference. First operand 11602 states and 21059 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 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 15:14:24,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:24,564 INFO L93 Difference]: Finished difference Result 30729 states and 56103 transitions. [2021-11-22 15:14:24,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-22 15:14:24,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 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 15:14:24,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:24,615 INFO L225 Difference]: With dead ends: 30729 [2021-11-22 15:14:24,615 INFO L226 Difference]: Without dead ends: 22006 [2021-11-22 15:14:24,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2021-11-22 15:14:24,631 INFO L933 BasicCegarLoop]: 8634 mSDtfsCounter, 74165 mSDsluCounter, 46902 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74165 SdHoareTripleChecker+Valid, 55536 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:24,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74165 Valid, 55536 Invalid, 1461 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [95 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-22 15:14:24,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22006 states. [2021-11-22 15:14:25,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22006 to 9298. [2021-11-22 15:14:25,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9298 states, 9293 states have (on average 1.811793823307866) internal successors, (16837), 9297 states have internal predecessors, (16837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:25,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9298 states to 9298 states and 16837 transitions. [2021-11-22 15:14:25,177 INFO L78 Accepts]: Start accepts. Automaton has 9298 states and 16837 transitions. Word has length 79 [2021-11-22 15:14:25,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:25,177 INFO L470 AbstractCegarLoop]: Abstraction has 9298 states and 16837 transitions. [2021-11-22 15:14:25,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 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 15:14:25,177 INFO L276 IsEmpty]: Start isEmpty. Operand 9298 states and 16837 transitions. [2021-11-22 15:14:25,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 15:14:25,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:25,182 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 15:14:25,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:14:25,183 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:25,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:25,183 INFO L85 PathProgramCache]: Analyzing trace with hash 2140453002, now seen corresponding path program 1 times [2021-11-22 15:14:25,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:25,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493267760] [2021-11-22 15:14:25,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:25,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:25,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:25,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493267760] [2021-11-22 15:14:25,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493267760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:25,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:25,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:14:25,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734622796] [2021-11-22 15:14:25,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:25,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:14:25,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:25,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:14:25,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:14:25,280 INFO L87 Difference]: Start difference. First operand 9298 states and 16837 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 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 15:14:28,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:28,420 INFO L93 Difference]: Finished difference Result 45889 states and 83782 transitions. [2021-11-22 15:14:28,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 15:14:28,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 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 15:14:28,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:28,497 INFO L225 Difference]: With dead ends: 45889 [2021-11-22 15:14:28,497 INFO L226 Difference]: Without dead ends: 37658 [2021-11-22 15:14:28,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2021-11-22 15:14:28,511 INFO L933 BasicCegarLoop]: 8659 mSDtfsCounter, 64697 mSDsluCounter, 45353 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64697 SdHoareTripleChecker+Valid, 54012 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:28,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64697 Valid, 54012 Invalid, 1689 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [197 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-22 15:14:28,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37658 states. [2021-11-22 15:14:29,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37658 to 22880. [2021-11-22 15:14:29,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22880 states, 22875 states have (on average 1.8116284153005464) internal successors, (41441), 22879 states have internal predecessors, (41441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:29,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22880 states to 22880 states and 41441 transitions. [2021-11-22 15:14:29,732 INFO L78 Accepts]: Start accepts. Automaton has 22880 states and 41441 transitions. Word has length 79 [2021-11-22 15:14:29,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:29,732 INFO L470 AbstractCegarLoop]: Abstraction has 22880 states and 41441 transitions. [2021-11-22 15:14:29,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 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 15:14:29,732 INFO L276 IsEmpty]: Start isEmpty. Operand 22880 states and 41441 transitions. [2021-11-22 15:14:29,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-22 15:14:29,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:29,737 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] [2021-11-22 15:14:29,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:14:29,738 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:29,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:29,739 INFO L85 PathProgramCache]: Analyzing trace with hash -225352648, now seen corresponding path program 1 times [2021-11-22 15:14:29,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:29,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932227341] [2021-11-22 15:14:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:29,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:29,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:29,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:29,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932227341] [2021-11-22 15:14:29,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932227341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:29,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:29,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:14:29,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662184109] [2021-11-22 15:14:29,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:29,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:14:29,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:29,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:14:29,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:14:29,828 INFO L87 Difference]: Start difference. First operand 22880 states and 41441 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:35,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:35,458 INFO L93 Difference]: Finished difference Result 124868 states and 227655 transitions. [2021-11-22 15:14:35,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 15:14:35,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-22 15:14:35,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:35,711 INFO L225 Difference]: With dead ends: 124868 [2021-11-22 15:14:35,711 INFO L226 Difference]: Without dead ends: 103057 [2021-11-22 15:14:35,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2021-11-22 15:14:35,741 INFO L933 BasicCegarLoop]: 8513 mSDtfsCounter, 65933 mSDsluCounter, 44888 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65933 SdHoareTripleChecker+Valid, 53401 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:35,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65933 Valid, 53401 Invalid, 1662 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [186 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-22 15:14:35,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103057 states. [2021-11-22 15:14:39,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103057 to 62060. [2021-11-22 15:14:39,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62060 states, 62055 states have (on average 1.8087019579405366) internal successors, (112239), 62059 states have internal predecessors, (112239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:39,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62060 states to 62060 states and 112239 transitions. [2021-11-22 15:14:39,319 INFO L78 Accepts]: Start accepts. Automaton has 62060 states and 112239 transitions. Word has length 80 [2021-11-22 15:14:39,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:39,320 INFO L470 AbstractCegarLoop]: Abstraction has 62060 states and 112239 transitions. [2021-11-22 15:14:39,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:39,320 INFO L276 IsEmpty]: Start isEmpty. Operand 62060 states and 112239 transitions. [2021-11-22 15:14:39,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-22 15:14:39,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:39,327 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] [2021-11-22 15:14:39,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 15:14:39,327 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 15:14:39,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:39,328 INFO L85 PathProgramCache]: Analyzing trace with hash 94529829, now seen corresponding path program 1 times [2021-11-22 15:14:39,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:14:39,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161478136] [2021-11-22 15:14:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:39,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:14:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:39,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:39,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:14:39,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161478136] [2021-11-22 15:14:39,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161478136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:14:39,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:14:39,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:14:39,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231077636] [2021-11-22 15:14:39,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:14:39,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:14:39,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:14:39,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:14:39,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:14:39,419 INFO L87 Difference]: Start difference. First operand 62060 states and 112239 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:52,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:52,649 INFO L93 Difference]: Finished difference Result 354578 states and 645209 transitions. [2021-11-22 15:14:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 15:14:52,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-22 15:14:52,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:53,297 INFO L225 Difference]: With dead ends: 354578 [2021-11-22 15:14:53,298 INFO L226 Difference]: Without dead ends: 293589 [2021-11-22 15:14:53,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2021-11-22 15:14:53,406 INFO L933 BasicCegarLoop]: 8532 mSDtfsCounter, 54745 mSDsluCounter, 50130 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54745 SdHoareTripleChecker+Valid, 58662 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:53,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54745 Valid, 58662 Invalid, 1770 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [148 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-22 15:14:53,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293589 states.