./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf175241-9e67-4984-9015-da75f8494c9c/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf175241-9e67-4984-9015-da75f8494c9c/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf175241-9e67-4984-9015-da75f8494c9c/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf175241-9e67-4984-9015-da75f8494c9c/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf175241-9e67-4984-9015-da75f8494c9c/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf175241-9e67-4984-9015-da75f8494c9c/bin/uautomizer-wIGwrQj20G --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 e942074e046d4b6eec963a95d600daf33500a37aba1da700aae37a309fea4cda --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:34:15,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:34:15,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:34:15,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:34:15,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:34:16,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:34:16,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:34:16,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:34:16,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:34:16,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:34:16,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:34:16,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:34:16,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:34:16,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:34:16,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:34:16,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:34:16,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:34:16,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:34:16,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:34:16,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:34:16,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:34:16,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:34:16,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:34:16,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:34:16,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:34:16,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:34:16,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:34:16,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:34:16,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:34:16,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:34:16,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:34:16,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:34:16,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:34:16,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:34:16,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:34:16,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:34:16,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:34:16,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:34:16,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:34:16,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:34:16,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:34:16,064 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf175241-9e67-4984-9015-da75f8494c9c/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:34:16,117 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:34:16,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:34:16,118 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:34:16,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:34:16,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:34:16,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:34:16,123 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:34:16,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:34:16,124 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:34:16,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:34:16,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:34:16,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:34:16,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:34:16,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:34:16,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:34:16,127 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:34:16,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:34:16,127 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:34:16,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:34:16,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:34:16,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:34:16,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:34:16,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:34:16,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:34:16,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:34:16,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:34:16,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:34:16,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:34:16,131 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:34:16,131 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:34:16,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:34:16,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:34:16,132 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_bf175241-9e67-4984-9015-da75f8494c9c/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf175241-9e67-4984-9015-da75f8494c9c/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e942074e046d4b6eec963a95d600daf33500a37aba1da700aae37a309fea4cda [2021-11-23 13:34:16,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:34:16,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:34:16,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:34:16,531 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:34:16,532 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:34:16,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf175241-9e67-4984-9015-da75f8494c9c/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c [2021-11-23 13:34:16,635 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf175241-9e67-4984-9015-da75f8494c9c/bin/uautomizer-wIGwrQj20G/data/e05b2b6a2/2a9c7f20de174b9689b155bfa2bf38b5/FLAGfd277d341 [2021-11-23 13:34:17,474 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:34:17,475 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf175241-9e67-4984-9015-da75f8494c9c/sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c [2021-11-23 13:34:17,518 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf175241-9e67-4984-9015-da75f8494c9c/bin/uautomizer-wIGwrQj20G/data/e05b2b6a2/2a9c7f20de174b9689b155bfa2bf38b5/FLAGfd277d341 [2021-11-23 13:34:17,628 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf175241-9e67-4984-9015-da75f8494c9c/bin/uautomizer-wIGwrQj20G/data/e05b2b6a2/2a9c7f20de174b9689b155bfa2bf38b5 [2021-11-23 13:34:17,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:34:17,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:34:17,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:34:17,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:34:17,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:34:17,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:34:17" (1/1) ... [2021-11-23 13:34:17,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@123ed3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:17, skipping insertion in model container [2021-11-23 13:34:17,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:34:17" (1/1) ... [2021-11-23 13:34:17,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:34:17,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:34:18,421 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_bf175241-9e67-4984-9015-da75f8494c9c/sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c[63703,63716] [2021-11-23 13:34:18,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:34:18,503 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:34:18,641 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_bf175241-9e67-4984-9015-da75f8494c9c/sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c[63703,63716] [2021-11-23 13:34:18,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:34:18,692 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:34:18,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:18 WrapperNode [2021-11-23 13:34:18,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:34:18,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:34:18,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:34:18,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:34:18,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:18" (1/1) ... [2021-11-23 13:34:18,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:18" (1/1) ... [2021-11-23 13:34:19,297 INFO L137 Inliner]: procedures = 98, calls = 353, calls flagged for inlining = 205, calls inlined = 806, statements flattened = 27302 [2021-11-23 13:34:19,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:34:19,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:34:19,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:34:19,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:34:19,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:18" (1/1) ... [2021-11-23 13:34:19,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:18" (1/1) ... [2021-11-23 13:34:19,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:18" (1/1) ... [2021-11-23 13:34:19,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:18" (1/1) ... [2021-11-23 13:34:19,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:18" (1/1) ... [2021-11-23 13:34:19,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:18" (1/1) ... [2021-11-23 13:34:19,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:18" (1/1) ... [2021-11-23 13:34:20,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:34:20,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:34:20,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:34:20,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:34:20,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:18" (1/1) ... [2021-11-23 13:34:20,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:34:20,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf175241-9e67-4984-9015-da75f8494c9c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:34:20,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf175241-9e67-4984-9015-da75f8494c9c/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:34:20,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf175241-9e67-4984-9015-da75f8494c9c/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:34:20,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:34:20,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:34:20,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:34:20,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:34:20,487 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:34:20,489 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:34:31,860 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:34:32,064 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:34:32,065 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 13:34:32,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:34:32 BoogieIcfgContainer [2021-11-23 13:34:32,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:34:32,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:34:32,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:34:32,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:34:32,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:34:17" (1/3) ... [2021-11-23 13:34:32,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8a0d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:34:32, skipping insertion in model container [2021-11-23 13:34:32,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:18" (2/3) ... [2021-11-23 13:34:32,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8a0d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:34:32, skipping insertion in model container [2021-11-23 13:34:32,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:34:32" (3/3) ... [2021-11-23 13:34:32,093 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product24.cil.c [2021-11-23 13:34:32,105 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:34:32,105 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-23 13:34:32,235 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:34:32,248 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 [2021-11-23 13:34:32,249 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-23 13:34:32,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 7106 states, 7100 states have (on average 1.8742253521126762) internal successors, (13307), 7105 states have internal predecessors, (13307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:32,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 13:34:32,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:34:32,472 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] [2021-11-23 13:34:32,473 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)] === [2021-11-23 13:34:32,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:34:32,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1948314457, now seen corresponding path program 1 times [2021-11-23 13:34:32,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:34:32,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443786402] [2021-11-23 13:34:32,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:34:32,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:34:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:34:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:34:32,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:34:32,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443786402] [2021-11-23 13:34:32,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443786402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:34:32,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:34:32,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:34:32,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685494782] [2021-11-23 13:34:32,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:34:32,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:34:32,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:34:32,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:34:32,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:34:32,991 INFO L87 Difference]: Start difference. First operand has 7106 states, 7100 states have (on average 1.8742253521126762) internal successors, (13307), 7105 states have internal predecessors, (13307), 0 states have call successors, (0), 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 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:33,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:34:33,712 INFO L93 Difference]: Finished difference Result 14197 states and 26591 transitions. [2021-11-23 13:34:33,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:34:33,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-23 13:34:33,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:34:33,815 INFO L225 Difference]: With dead ends: 14197 [2021-11-23 13:34:33,816 INFO L226 Difference]: Without dead ends: 7095 [2021-11-23 13:34:33,845 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 [2021-11-23 13:34:33,854 INFO L933 BasicCegarLoop]: 13286 mSDtfsCounter, 13280 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13280 SdHoareTripleChecker+Valid, 13297 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:34:33,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13280 Valid, 13297 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:34:33,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7095 states. [2021-11-23 13:34:34,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7095 to 7095. [2021-11-23 13:34:34,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7095 states, 7090 states have (on average 1.8733427362482369) internal successors, (13282), 7094 states have internal predecessors, (13282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:34,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7095 states to 7095 states and 13282 transitions. [2021-11-23 13:34:34,240 INFO L78 Accepts]: Start accepts. Automaton has 7095 states and 13282 transitions. Word has length 33 [2021-11-23 13:34:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:34:34,241 INFO L470 AbstractCegarLoop]: Abstraction has 7095 states and 13282 transitions. [2021-11-23 13:34:34,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:34,241 INFO L276 IsEmpty]: Start isEmpty. Operand 7095 states and 13282 transitions. [2021-11-23 13:34:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 13:34:34,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:34:34,247 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] [2021-11-23 13:34:34,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:34:34,248 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)] === [2021-11-23 13:34:34,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:34:34,249 INFO L85 PathProgramCache]: Analyzing trace with hash -2011964315, now seen corresponding path program 1 times [2021-11-23 13:34:34,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:34:34,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280574526] [2021-11-23 13:34:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:34:34,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:34:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:34:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:34:34,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:34:34,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280574526] [2021-11-23 13:34:34,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280574526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:34:34,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:34:34,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:34:34,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104705206] [2021-11-23 13:34:34,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:34:34,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:34:34,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:34:34,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:34:34,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:34:34,445 INFO L87 Difference]: Start difference. First operand 7095 states and 13282 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:35,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:34:35,258 INFO L93 Difference]: Finished difference Result 14140 states and 26479 transitions. [2021-11-23 13:34:35,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:34:35,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-11-23 13:34:35,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:34:35,321 INFO L225 Difference]: With dead ends: 14140 [2021-11-23 13:34:35,322 INFO L226 Difference]: Without dead ends: 7089 [2021-11-23 13:34:35,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:34:35,344 INFO L933 BasicCegarLoop]: 13256 mSDtfsCounter, 53038 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53038 SdHoareTripleChecker+Valid, 13284 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:34:35,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53038 Valid, 13284 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:34:35,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7089 states. [2021-11-23 13:34:35,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7089 to 7089. [2021-11-23 13:34:36,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7089 states, 7084 states have (on average 1.8730942970073405) internal successors, (13269), 7088 states have internal predecessors, (13269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:36,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7089 states to 7089 states and 13269 transitions. [2021-11-23 13:34:36,089 INFO L78 Accepts]: Start accepts. Automaton has 7089 states and 13269 transitions. Word has length 40 [2021-11-23 13:34:36,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:34:36,091 INFO L470 AbstractCegarLoop]: Abstraction has 7089 states and 13269 transitions. [2021-11-23 13:34:36,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 7089 states and 13269 transitions. [2021-11-23 13:34:36,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 13:34:36,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:34:36,098 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] [2021-11-23 13:34:36,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:34:36,101 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)] === [2021-11-23 13:34:36,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:34:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash 732357154, now seen corresponding path program 1 times [2021-11-23 13:34:36,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:34:36,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249401795] [2021-11-23 13:34:36,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:34:36,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:34:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:34:36,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:34:36,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:34:36,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249401795] [2021-11-23 13:34:36,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249401795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:34:36,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:34:36,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:34:36,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153223588] [2021-11-23 13:34:36,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:34:36,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:34:36,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:34:36,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:34:36,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:34:36,243 INFO L87 Difference]: Start difference. First operand 7089 states and 13269 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:37,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:34:37,009 INFO L93 Difference]: Finished difference Result 14134 states and 26466 transitions. [2021-11-23 13:34:37,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:34:37,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-11-23 13:34:37,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:34:37,067 INFO L225 Difference]: With dead ends: 14134 [2021-11-23 13:34:37,067 INFO L226 Difference]: Without dead ends: 7089 [2021-11-23 13:34:37,079 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 [2021-11-23 13:34:37,088 INFO L933 BasicCegarLoop]: 13215 mSDtfsCounter, 26505 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26505 SdHoareTripleChecker+Valid, 13230 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:34:37,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26505 Valid, 13230 Invalid, 59 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:34:37,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7089 states. [2021-11-23 13:34:37,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7089 to 7089. [2021-11-23 13:34:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7089 states, 7084 states have (on average 1.8725296442687747) internal successors, (13265), 7088 states have internal predecessors, (13265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7089 states to 7089 states and 13265 transitions. [2021-11-23 13:34:37,519 INFO L78 Accepts]: Start accepts. Automaton has 7089 states and 13265 transitions. Word has length 41 [2021-11-23 13:34:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:34:37,520 INFO L470 AbstractCegarLoop]: Abstraction has 7089 states and 13265 transitions. [2021-11-23 13:34:37,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:37,520 INFO L276 IsEmpty]: Start isEmpty. Operand 7089 states and 13265 transitions. [2021-11-23 13:34:37,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 13:34:37,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:34:37,522 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] [2021-11-23 13:34:37,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:34:37,523 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)] === [2021-11-23 13:34:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:34:37,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1482730430, now seen corresponding path program 1 times [2021-11-23 13:34:37,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:34:37,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123801637] [2021-11-23 13:34:37,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:34:37,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:34:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:34:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:34:37,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:34:37,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123801637] [2021-11-23 13:34:37,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123801637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:34:37,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:34:37,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:34:37,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559537914] [2021-11-23 13:34:37,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:34:37,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:34:37,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:34:37,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:34:37,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:34:37,599 INFO L87 Difference]: Start difference. First operand 7089 states and 13265 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:38,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:34:38,223 INFO L93 Difference]: Finished difference Result 14134 states and 26462 transitions. [2021-11-23 13:34:38,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:34:38,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-23 13:34:38,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:34:38,268 INFO L225 Difference]: With dead ends: 14134 [2021-11-23 13:34:38,269 INFO L226 Difference]: Without dead ends: 7089 [2021-11-23 13:34:38,282 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 [2021-11-23 13:34:38,292 INFO L933 BasicCegarLoop]: 13215 mSDtfsCounter, 26495 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26495 SdHoareTripleChecker+Valid, 13230 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:34:38,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26495 Valid, 13230 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:34:38,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7089 states. [2021-11-23 13:34:38,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7089 to 7089. [2021-11-23 13:34:38,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7089 states, 7084 states have (on average 1.871964991530209) internal successors, (13261), 7088 states have internal predecessors, (13261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:38,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7089 states to 7089 states and 13261 transitions. [2021-11-23 13:34:38,760 INFO L78 Accepts]: Start accepts. Automaton has 7089 states and 13261 transitions. Word has length 42 [2021-11-23 13:34:38,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:34:38,761 INFO L470 AbstractCegarLoop]: Abstraction has 7089 states and 13261 transitions. [2021-11-23 13:34:38,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:38,761 INFO L276 IsEmpty]: Start isEmpty. Operand 7089 states and 13261 transitions. [2021-11-23 13:34:38,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 13:34:38,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:34:38,763 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] [2021-11-23 13:34:38,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:34:38,764 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)] === [2021-11-23 13:34:38,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:34:38,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1766002563, now seen corresponding path program 1 times [2021-11-23 13:34:38,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:34:38,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847850097] [2021-11-23 13:34:38,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:34:38,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:34:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:34:38,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:34:38,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:34:38,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847850097] [2021-11-23 13:34:38,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847850097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:34:38,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:34:38,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:34:38,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37791529] [2021-11-23 13:34:38,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:34:38,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:34:38,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:34:38,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:34:38,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:34:38,851 INFO L87 Difference]: Start difference. First operand 7089 states and 13261 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:39,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:34:39,508 INFO L93 Difference]: Finished difference Result 14134 states and 26458 transitions. [2021-11-23 13:34:39,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:34:39,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-11-23 13:34:39,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:34:39,533 INFO L225 Difference]: With dead ends: 14134 [2021-11-23 13:34:39,533 INFO L226 Difference]: Without dead ends: 7089 [2021-11-23 13:34:39,543 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 [2021-11-23 13:34:39,544 INFO L933 BasicCegarLoop]: 13215 mSDtfsCounter, 26485 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26485 SdHoareTripleChecker+Valid, 13230 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:34:39,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26485 Valid, 13230 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:34:39,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7089 states. [2021-11-23 13:34:39,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7089 to 7089. [2021-11-23 13:34:39,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7089 states, 7084 states have (on average 1.8714003387916431) internal successors, (13257), 7088 states have internal predecessors, (13257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:39,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7089 states to 7089 states and 13257 transitions. [2021-11-23 13:34:39,880 INFO L78 Accepts]: Start accepts. Automaton has 7089 states and 13257 transitions. Word has length 43 [2021-11-23 13:34:39,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:34:39,883 INFO L470 AbstractCegarLoop]: Abstraction has 7089 states and 13257 transitions. [2021-11-23 13:34:39,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:39,884 INFO L276 IsEmpty]: Start isEmpty. Operand 7089 states and 13257 transitions. [2021-11-23 13:34:39,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 13:34:39,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:34:39,891 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] [2021-11-23 13:34:39,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:34:39,891 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)] === [2021-11-23 13:34:39,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:34:39,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2134434813, now seen corresponding path program 1 times [2021-11-23 13:34:39,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:34:39,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893980484] [2021-11-23 13:34:39,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:34:39,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:34:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:34:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:34:39,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:34:39,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893980484] [2021-11-23 13:34:39,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893980484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:34:39,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:34:39,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:34:39,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304565870] [2021-11-23 13:34:39,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:34:39,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:34:39,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:34:39,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:34:39,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:34:39,971 INFO L87 Difference]: Start difference. First operand 7089 states and 13257 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:40,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:34:40,493 INFO L93 Difference]: Finished difference Result 14134 states and 26454 transitions. [2021-11-23 13:34:40,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:34:40,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-11-23 13:34:40,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:34:40,517 INFO L225 Difference]: With dead ends: 14134 [2021-11-23 13:34:40,518 INFO L226 Difference]: Without dead ends: 7068 [2021-11-23 13:34:40,530 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 [2021-11-23 13:34:40,532 INFO L933 BasicCegarLoop]: 13219 mSDtfsCounter, 26416 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26416 SdHoareTripleChecker+Valid, 13245 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:34:40,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26416 Valid, 13245 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:34:40,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7068 states. [2021-11-23 13:34:40,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7068 to 7068. [2021-11-23 13:34:40,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7068 states, 7063 states have (on average 1.8721506442021805) internal successors, (13223), 7067 states have internal predecessors, (13223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:40,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 13223 transitions. [2021-11-23 13:34:40,939 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 13223 transitions. Word has length 43 [2021-11-23 13:34:40,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:34:40,940 INFO L470 AbstractCegarLoop]: Abstraction has 7068 states and 13223 transitions. [2021-11-23 13:34:40,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:40,940 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 13223 transitions. [2021-11-23 13:34:40,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 13:34:40,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:34:40,943 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] [2021-11-23 13:34:40,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:34:40,944 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)] === [2021-11-23 13:34:40,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:34:40,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2002429437, now seen corresponding path program 1 times [2021-11-23 13:34:40,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:34:40,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375156709] [2021-11-23 13:34:40,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:34:40,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:34:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:34:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:34:41,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:34:41,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375156709] [2021-11-23 13:34:41,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375156709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:34:41,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:34:41,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:34:41,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030102230] [2021-11-23 13:34:41,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:34:41,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:34:41,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:34:41,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:34:41,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:34:41,043 INFO L87 Difference]: Start difference. First operand 7068 states and 13223 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:41,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:34:41,604 INFO L93 Difference]: Finished difference Result 14113 states and 26420 transitions. [2021-11-23 13:34:41,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:34:41,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-11-23 13:34:41,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:34:41,630 INFO L225 Difference]: With dead ends: 14113 [2021-11-23 13:34:41,630 INFO L226 Difference]: Without dead ends: 7068 [2021-11-23 13:34:41,642 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 [2021-11-23 13:34:41,644 INFO L933 BasicCegarLoop]: 13208 mSDtfsCounter, 26413 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26413 SdHoareTripleChecker+Valid, 13223 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:34:41,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26413 Valid, 13223 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:34:41,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7068 states. [2021-11-23 13:34:41,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7068 to 7068. [2021-11-23 13:34:41,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7068 states, 7063 states have (on average 1.8720090613053944) internal successors, (13222), 7067 states have internal predecessors, (13222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 13222 transitions. [2021-11-23 13:34:42,028 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 13222 transitions. Word has length 44 [2021-11-23 13:34:42,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:34:42,029 INFO L470 AbstractCegarLoop]: Abstraction has 7068 states and 13222 transitions. [2021-11-23 13:34:42,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:42,030 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 13222 transitions. [2021-11-23 13:34:42,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 13:34:42,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:34:42,032 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] [2021-11-23 13:34:42,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:34:42,032 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)] === [2021-11-23 13:34:42,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:34:42,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1770296616, now seen corresponding path program 1 times [2021-11-23 13:34:42,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:34:42,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463542284] [2021-11-23 13:34:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:34:42,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:34:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:34:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:34:42,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:34:42,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463542284] [2021-11-23 13:34:42,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463542284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:34:42,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:34:42,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:34:42,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877305685] [2021-11-23 13:34:42,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:34:42,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:34:42,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:34:42,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:34:42,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:34:42,117 INFO L87 Difference]: Start difference. First operand 7068 states and 13222 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:42,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:34:42,555 INFO L93 Difference]: Finished difference Result 14113 states and 26419 transitions. [2021-11-23 13:34:42,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:34:42,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-23 13:34:42,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:34:42,579 INFO L225 Difference]: With dead ends: 14113 [2021-11-23 13:34:42,579 INFO L226 Difference]: Without dead ends: 7068 [2021-11-23 13:34:42,591 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 [2021-11-23 13:34:42,592 INFO L933 BasicCegarLoop]: 13208 mSDtfsCounter, 26409 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26409 SdHoareTripleChecker+Valid, 13223 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:34:42,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26409 Valid, 13223 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:34:42,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7068 states. [2021-11-23 13:34:42,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7068 to 7068. [2021-11-23 13:34:42,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7068 states, 7063 states have (on average 1.8718674784086082) internal successors, (13221), 7067 states have internal predecessors, (13221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 13221 transitions. [2021-11-23 13:34:42,990 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 13221 transitions. Word has length 45 [2021-11-23 13:34:42,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:34:42,991 INFO L470 AbstractCegarLoop]: Abstraction has 7068 states and 13221 transitions. [2021-11-23 13:34:42,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:42,992 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 13221 transitions. [2021-11-23 13:34:42,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 13:34:42,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:34:42,993 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] [2021-11-23 13:34:42,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 13:34:42,994 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)] === [2021-11-23 13:34:42,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:34:42,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1199246264, now seen corresponding path program 1 times [2021-11-23 13:34:42,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:34:42,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953077121] [2021-11-23 13:34:42,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:34:42,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:34:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:34:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:34:43,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:34:43,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953077121] [2021-11-23 13:34:43,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953077121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:34:43,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:34:43,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:34:43,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125177317] [2021-11-23 13:34:43,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:34:43,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:34:43,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:34:43,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:34:43,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:34:43,115 INFO L87 Difference]: Start difference. First operand 7068 states and 13221 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:43,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:34:43,777 INFO L93 Difference]: Finished difference Result 14107 states and 26407 transitions. [2021-11-23 13:34:43,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:34:43,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-23 13:34:43,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:34:43,797 INFO L225 Difference]: With dead ends: 14107 [2021-11-23 13:34:43,797 INFO L226 Difference]: Without dead ends: 7068 [2021-11-23 13:34:43,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:34:43,807 INFO L933 BasicCegarLoop]: 13205 mSDtfsCounter, 66029 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66029 SdHoareTripleChecker+Valid, 13252 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:34:43,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66029 Valid, 13252 Invalid, 26 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:34:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7068 states. [2021-11-23 13:34:44,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7068 to 7068. [2021-11-23 13:34:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7068 states, 7063 states have (on average 1.8717258955118221) internal successors, (13220), 7067 states have internal predecessors, (13220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:44,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 13220 transitions. [2021-11-23 13:34:44,080 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 13220 transitions. Word has length 46 [2021-11-23 13:34:44,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:34:44,081 INFO L470 AbstractCegarLoop]: Abstraction has 7068 states and 13220 transitions. [2021-11-23 13:34:44,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:44,081 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 13220 transitions. [2021-11-23 13:34:44,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 13:34:44,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:34:44,083 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] [2021-11-23 13:34:44,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 13:34:44,083 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)] === [2021-11-23 13:34:44,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:34:44,084 INFO L85 PathProgramCache]: Analyzing trace with hash -162087325, now seen corresponding path program 1 times [2021-11-23 13:34:44,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:34:44,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458944461] [2021-11-23 13:34:44,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:34:44,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:34:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:34:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:34:44,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:34:44,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458944461] [2021-11-23 13:34:44,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458944461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:34:44,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:34:44,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:34:44,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116697961] [2021-11-23 13:34:44,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:34:44,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:34:44,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:34:44,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:34:44,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:34:44,172 INFO L87 Difference]: Start difference. First operand 7068 states and 13220 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:45,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:34:45,283 INFO L93 Difference]: Finished difference Result 15834 states and 29668 transitions. [2021-11-23 13:34:45,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:34:45,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-23 13:34:45,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:34:45,323 INFO L225 Difference]: With dead ends: 15834 [2021-11-23 13:34:45,324 INFO L226 Difference]: Without dead ends: 12259 [2021-11-23 13:34:45,330 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 [2021-11-23 13:34:45,331 INFO L933 BasicCegarLoop]: 13137 mSDtfsCounter, 13091 mSDsluCounter, 9750 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13091 SdHoareTripleChecker+Valid, 22887 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:34:45,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13091 Valid, 22887 Invalid, 149 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:34:45,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12259 states. [2021-11-23 13:34:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12259 to 10110. [2021-11-23 13:34:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10110 states, 10105 states have (on average 1.8743196437407224) internal successors, (18940), 10109 states have internal predecessors, (18940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:46,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10110 states to 10110 states and 18940 transitions. [2021-11-23 13:34:46,013 INFO L78 Accepts]: Start accepts. Automaton has 10110 states and 18940 transitions. Word has length 47 [2021-11-23 13:34:46,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:34:46,013 INFO L470 AbstractCegarLoop]: Abstraction has 10110 states and 18940 transitions. [2021-11-23 13:34:46,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:46,013 INFO L276 IsEmpty]: Start isEmpty. Operand 10110 states and 18940 transitions. [2021-11-23 13:34:46,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 13:34:46,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:34:46,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:34:46,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 13:34:46,021 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)] === [2021-11-23 13:34:46,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:34:46,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1827906758, now seen corresponding path program 1 times [2021-11-23 13:34:46,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:34:46,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892399484] [2021-11-23 13:34:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:34:46,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:34:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:34:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:34:46,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:34:46,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892399484] [2021-11-23 13:34:46,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892399484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:34:46,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:34:46,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:34:46,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408037172] [2021-11-23 13:34:46,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:34:46,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:34:46,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:34:46,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:34:46,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:34:46,090 INFO L87 Difference]: Start difference. First operand 10110 states and 18940 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:47,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:34:47,194 INFO L93 Difference]: Finished difference Result 20665 states and 38550 transitions. [2021-11-23 13:34:47,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:34:47,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-23 13:34:47,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:34:47,229 INFO L225 Difference]: With dead ends: 20665 [2021-11-23 13:34:47,229 INFO L226 Difference]: Without dead ends: 11799 [2021-11-23 13:34:47,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:34:47,238 INFO L933 BasicCegarLoop]: 13481 mSDtfsCounter, 19027 mSDsluCounter, 20315 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19027 SdHoareTripleChecker+Valid, 33796 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:34:47,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19027 Valid, 33796 Invalid, 151 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:34:47,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11799 states. [2021-11-23 13:34:47,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11799 to 8390. [2021-11-23 13:34:47,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8390 states, 8385 states have (on average 1.8655933214072749) internal successors, (15643), 8389 states have internal predecessors, (15643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:47,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8390 states to 8390 states and 15643 transitions. [2021-11-23 13:34:47,700 INFO L78 Accepts]: Start accepts. Automaton has 8390 states and 15643 transitions. Word has length 68 [2021-11-23 13:34:47,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:34:47,700 INFO L470 AbstractCegarLoop]: Abstraction has 8390 states and 15643 transitions. [2021-11-23 13:34:47,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:47,701 INFO L276 IsEmpty]: Start isEmpty. Operand 8390 states and 15643 transitions. [2021-11-23 13:34:47,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 13:34:47,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:34:47,705 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] [2021-11-23 13:34:47,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 13:34:47,706 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)] === [2021-11-23 13:34:47,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:34:47,706 INFO L85 PathProgramCache]: Analyzing trace with hash -172009959, now seen corresponding path program 1 times [2021-11-23 13:34:47,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:34:47,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493450865] [2021-11-23 13:34:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:34:47,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:34:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:34:47,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:34:47,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:34:47,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493450865] [2021-11-23 13:34:47,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493450865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:34:47,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:34:47,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:34:47,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725887901] [2021-11-23 13:34:47,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:34:47,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:34:47,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:34:47,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:34:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:34:47,782 INFO L87 Difference]: Start difference. First operand 8390 states and 15643 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:51,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:34:51,302 INFO L93 Difference]: Finished difference Result 22701 states and 42234 transitions. [2021-11-23 13:34:51,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:34:51,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-23 13:34:51,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:34:51,353 INFO L225 Difference]: With dead ends: 22701 [2021-11-23 13:34:51,353 INFO L226 Difference]: Without dead ends: 14351 [2021-11-23 13:34:51,364 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 [2021-11-23 13:34:51,365 INFO L933 BasicCegarLoop]: 10049 mSDtfsCounter, 24420 mSDsluCounter, 7203 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24420 SdHoareTripleChecker+Valid, 17252 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:34:51,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24420 Valid, 17252 Invalid, 2272 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [476 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 13:34:51,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14351 states. [2021-11-23 13:34:51,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14351 to 8390. [2021-11-23 13:34:51,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8390 states, 8385 states have (on average 1.8172927847346452) internal successors, (15238), 8389 states have internal predecessors, (15238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8390 states to 8390 states and 15238 transitions. [2021-11-23 13:34:51,978 INFO L78 Accepts]: Start accepts. Automaton has 8390 states and 15238 transitions. Word has length 69 [2021-11-23 13:34:51,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:34:51,978 INFO L470 AbstractCegarLoop]: Abstraction has 8390 states and 15238 transitions. [2021-11-23 13:34:51,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:51,979 INFO L276 IsEmpty]: Start isEmpty. Operand 8390 states and 15238 transitions. [2021-11-23 13:34:51,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 13:34:51,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:34:51,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:34:51,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 13:34:51,984 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)] === [2021-11-23 13:34:51,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:34:51,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2128228691, now seen corresponding path program 1 times [2021-11-23 13:34:51,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:34:51,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848375236] [2021-11-23 13:34:51,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:34:51,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:34:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:34:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:34:52,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:34:52,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848375236] [2021-11-23 13:34:52,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848375236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:34:52,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:34:52,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:34:52,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224068394] [2021-11-23 13:34:52,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:34:52,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:34:52,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:34:52,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:34:52,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:34:52,085 INFO L87 Difference]: Start difference. First operand 8390 states and 15238 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:34:58,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:34:58,556 INFO L93 Difference]: Finished difference Result 58929 states and 108024 transitions. [2021-11-23 13:34:58,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:34:58,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-23 13:34:58,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:34:58,741 INFO L225 Difference]: With dead ends: 58929 [2021-11-23 13:34:58,742 INFO L226 Difference]: Without dead ends: 50606 [2021-11-23 13:34:58,762 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 [2021-11-23 13:34:58,764 INFO L933 BasicCegarLoop]: 16281 mSDtfsCounter, 76285 mSDsluCounter, 112963 mSDsCounter, 0 mSdLazyCounter, 3813 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76285 SdHoareTripleChecker+Valid, 129244 SdHoareTripleChecker+Invalid, 4266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 3813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:34:58,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76285 Valid, 129244 Invalid, 4266 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [453 Valid, 3813 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-23 13:34:58,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50606 states. [2021-11-23 13:35:00,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50606 to 16552. [2021-11-23 13:35:00,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16552 states, 16547 states have (on average 1.8193025926149755) internal successors, (30104), 16551 states have internal predecessors, (30104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:00,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16552 states to 16552 states and 30104 transitions. [2021-11-23 13:35:00,326 INFO L78 Accepts]: Start accepts. Automaton has 16552 states and 30104 transitions. Word has length 77 [2021-11-23 13:35:00,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:00,327 INFO L470 AbstractCegarLoop]: Abstraction has 16552 states and 30104 transitions. [2021-11-23 13:35:00,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:00,327 INFO L276 IsEmpty]: Start isEmpty. Operand 16552 states and 30104 transitions. [2021-11-23 13:35:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 13:35:00,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:00,340 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] [2021-11-23 13:35:00,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 13:35:00,341 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)] === [2021-11-23 13:35:00,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:00,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1614808049, now seen corresponding path program 1 times [2021-11-23 13:35:00,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:00,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950466989] [2021-11-23 13:35:00,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:00,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:00,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:00,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950466989] [2021-11-23 13:35:00,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950466989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:00,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:00,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:35:00,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356576630] [2021-11-23 13:35:00,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:00,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:35:00,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:00,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:35:00,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:35:00,477 INFO L87 Difference]: Start difference. First operand 16552 states and 30104 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:06,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:06,528 INFO L93 Difference]: Finished difference Result 50527 states and 92488 transitions. [2021-11-23 13:35:06,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:35:06,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-23 13:35:06,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:06,644 INFO L225 Difference]: With dead ends: 50527 [2021-11-23 13:35:06,645 INFO L226 Difference]: Without dead ends: 43979 [2021-11-23 13:35:06,663 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 [2021-11-23 13:35:06,664 INFO L933 BasicCegarLoop]: 26141 mSDtfsCounter, 58191 mSDsluCounter, 95176 mSDsCounter, 0 mSdLazyCounter, 3373 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58191 SdHoareTripleChecker+Valid, 121317 SdHoareTripleChecker+Invalid, 3813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 3373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:06,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58191 Valid, 121317 Invalid, 3813 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [440 Valid, 3373 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-23 13:35:06,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43979 states. [2021-11-23 13:35:07,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43979 to 16542. [2021-11-23 13:35:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16542 states, 16537 states have (on average 1.8191933240611962) internal successors, (30084), 16541 states have internal predecessors, (30084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16542 states to 16542 states and 30084 transitions. [2021-11-23 13:35:07,996 INFO L78 Accepts]: Start accepts. Automaton has 16542 states and 30084 transitions. Word has length 80 [2021-11-23 13:35:07,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:07,996 INFO L470 AbstractCegarLoop]: Abstraction has 16542 states and 30084 transitions. [2021-11-23 13:35:07,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:07,997 INFO L276 IsEmpty]: Start isEmpty. Operand 16542 states and 30084 transitions. [2021-11-23 13:35:08,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 13:35:08,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:08,006 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] [2021-11-23 13:35:08,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 13:35:08,007 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)] === [2021-11-23 13:35:08,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:08,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1205653432, now seen corresponding path program 1 times [2021-11-23 13:35:08,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:08,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734395773] [2021-11-23 13:35:08,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:08,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:08,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:08,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:08,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734395773] [2021-11-23 13:35:08,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734395773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:08,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:08,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:35:08,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577072932] [2021-11-23 13:35:08,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:08,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:35:08,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:08,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:35:08,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:35:08,069 INFO L87 Difference]: Start difference. First operand 16542 states and 30084 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:08,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:08,566 INFO L93 Difference]: Finished difference Result 24711 states and 44946 transitions. [2021-11-23 13:35:08,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:35:08,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-23 13:35:08,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:08,589 INFO L225 Difference]: With dead ends: 24711 [2021-11-23 13:35:08,590 INFO L226 Difference]: Without dead ends: 8195 [2021-11-23 13:35:08,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:35:08,610 INFO L933 BasicCegarLoop]: 9576 mSDtfsCounter, 28683 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28683 SdHoareTripleChecker+Valid, 9623 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:08,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28683 Valid, 9623 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:35:08,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8195 states. [2021-11-23 13:35:09,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8195 to 8195. [2021-11-23 13:35:09,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8195 states, 8190 states have (on average 1.817948717948718) internal successors, (14889), 8194 states have internal predecessors, (14889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:09,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8195 states to 8195 states and 14889 transitions. [2021-11-23 13:35:09,395 INFO L78 Accepts]: Start accepts. Automaton has 8195 states and 14889 transitions. Word has length 80 [2021-11-23 13:35:09,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:09,395 INFO L470 AbstractCegarLoop]: Abstraction has 8195 states and 14889 transitions. [2021-11-23 13:35:09,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:09,396 INFO L276 IsEmpty]: Start isEmpty. Operand 8195 states and 14889 transitions. [2021-11-23 13:35:09,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 13:35:09,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:09,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:09,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 13:35:09,403 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)] === [2021-11-23 13:35:09,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:09,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1910334177, now seen corresponding path program 1 times [2021-11-23 13:35:09,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:09,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991177806] [2021-11-23 13:35:09,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:09,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:09,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:09,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991177806] [2021-11-23 13:35:09,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991177806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:09,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:09,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:35:09,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300420156] [2021-11-23 13:35:09,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:09,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:35:09,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:09,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:35:09,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:35:09,475 INFO L87 Difference]: Start difference. First operand 8195 states and 14889 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:10,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:10,378 INFO L93 Difference]: Finished difference Result 19275 states and 35044 transitions. [2021-11-23 13:35:10,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:35:10,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-23 13:35:10,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:10,399 INFO L225 Difference]: With dead ends: 19275 [2021-11-23 13:35:10,399 INFO L226 Difference]: Without dead ends: 12358 [2021-11-23 13:35:10,406 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 [2021-11-23 13:35:10,407 INFO L933 BasicCegarLoop]: 10023 mSDtfsCounter, 9461 mSDsluCounter, 7411 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9461 SdHoareTripleChecker+Valid, 17434 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:10,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9461 Valid, 17434 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:35:10,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12358 states. [2021-11-23 13:35:11,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12358 to 12341. [2021-11-23 13:35:11,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12341 states, 12336 states have (on average 1.8172827496757458) internal successors, (22418), 12340 states have internal predecessors, (22418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12341 states to 12341 states and 22418 transitions. [2021-11-23 13:35:11,102 INFO L78 Accepts]: Start accepts. Automaton has 12341 states and 22418 transitions. Word has length 86 [2021-11-23 13:35:11,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:11,102 INFO L470 AbstractCegarLoop]: Abstraction has 12341 states and 22418 transitions. [2021-11-23 13:35:11,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:11,103 INFO L276 IsEmpty]: Start isEmpty. Operand 12341 states and 22418 transitions. [2021-11-23 13:35:11,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 13:35:11,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:11,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:11,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 13:35:11,109 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)] === [2021-11-23 13:35:11,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:11,110 INFO L85 PathProgramCache]: Analyzing trace with hash -390476302, now seen corresponding path program 1 times [2021-11-23 13:35:11,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:11,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062477815] [2021-11-23 13:35:11,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:11,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:11,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:11,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062477815] [2021-11-23 13:35:11,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062477815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:11,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:11,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:35:11,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734824303] [2021-11-23 13:35:11,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:11,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:35:11,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:11,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:35:11,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:35:11,173 INFO L87 Difference]: Start difference. First operand 12341 states and 22418 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:12,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:12,661 INFO L93 Difference]: Finished difference Result 30982 states and 56302 transitions. [2021-11-23 13:35:12,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:35:12,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-11-23 13:35:12,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:12,692 INFO L225 Difference]: With dead ends: 30982 [2021-11-23 13:35:12,693 INFO L226 Difference]: Without dead ends: 20554 [2021-11-23 13:35:12,705 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 [2021-11-23 13:35:12,706 INFO L933 BasicCegarLoop]: 9505 mSDtfsCounter, 9446 mSDsluCounter, 7434 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9446 SdHoareTripleChecker+Valid, 16939 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:12,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9446 Valid, 16939 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:35:12,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20554 states. [2021-11-23 13:35:13,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20554 to 20537. [2021-11-23 13:35:13,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20537 states, 20532 states have (on average 1.8173582700175337) internal successors, (37314), 20536 states have internal predecessors, (37314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:13,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20537 states to 20537 states and 37314 transitions. [2021-11-23 13:35:13,716 INFO L78 Accepts]: Start accepts. Automaton has 20537 states and 37314 transitions. Word has length 87 [2021-11-23 13:35:13,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:13,717 INFO L470 AbstractCegarLoop]: Abstraction has 20537 states and 37314 transitions. [2021-11-23 13:35:13,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:13,717 INFO L276 IsEmpty]: Start isEmpty. Operand 20537 states and 37314 transitions. [2021-11-23 13:35:13,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:35:13,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:13,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:13,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 13:35:13,724 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)] === [2021-11-23 13:35:13,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:13,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1348981244, now seen corresponding path program 1 times [2021-11-23 13:35:13,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:13,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404926934] [2021-11-23 13:35:13,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:13,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:13,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:13,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404926934] [2021-11-23 13:35:13,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404926934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:13,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:13,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:35:13,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369179768] [2021-11-23 13:35:13,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:13,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:35:13,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:13,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:35:13,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:35:13,784 INFO L87 Difference]: Start difference. First operand 20537 states and 37314 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:16,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:16,140 INFO L93 Difference]: Finished difference Result 54204 states and 98469 transitions. [2021-11-23 13:35:16,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:35:16,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-23 13:35:16,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:16,200 INFO L225 Difference]: With dead ends: 54204 [2021-11-23 13:35:16,200 INFO L226 Difference]: Without dead ends: 36734 [2021-11-23 13:35:16,214 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 [2021-11-23 13:35:16,215 INFO L933 BasicCegarLoop]: 9491 mSDtfsCounter, 9431 mSDsluCounter, 7457 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9431 SdHoareTripleChecker+Valid, 16948 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:16,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9431 Valid, 16948 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:35:16,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36734 states. [2021-11-23 13:35:18,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36734 to 36717. [2021-11-23 13:35:18,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36717 states, 36712 states have (on average 1.8168446284593593) internal successors, (66700), 36716 states have internal predecessors, (66700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:18,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36717 states to 36717 states and 66700 transitions. [2021-11-23 13:35:18,160 INFO L78 Accepts]: Start accepts. Automaton has 36717 states and 66700 transitions. Word has length 88 [2021-11-23 13:35:18,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:18,160 INFO L470 AbstractCegarLoop]: Abstraction has 36717 states and 66700 transitions. [2021-11-23 13:35:18,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:18,161 INFO L276 IsEmpty]: Start isEmpty. Operand 36717 states and 66700 transitions. [2021-11-23 13:35:18,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-23 13:35:18,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:18,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:18,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 13:35:18,168 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)] === [2021-11-23 13:35:18,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:18,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1827322185, now seen corresponding path program 1 times [2021-11-23 13:35:18,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:18,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087384460] [2021-11-23 13:35:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:18,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:18,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:18,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087384460] [2021-11-23 13:35:18,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087384460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:18,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:18,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:35:18,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535165378] [2021-11-23 13:35:18,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:18,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:35:18,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:18,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:35:18,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:35:18,234 INFO L87 Difference]: Start difference. First operand 36717 states and 66700 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:21,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:21,310 INFO L93 Difference]: Finished difference Result 100224 states and 181942 transitions. [2021-11-23 13:35:21,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:35:21,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-23 13:35:21,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:21,427 INFO L225 Difference]: With dead ends: 100224 [2021-11-23 13:35:21,427 INFO L226 Difference]: Without dead ends: 68650 [2021-11-23 13:35:21,450 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 [2021-11-23 13:35:21,451 INFO L933 BasicCegarLoop]: 9477 mSDtfsCounter, 9416 mSDsluCounter, 7480 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9416 SdHoareTripleChecker+Valid, 16957 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:21,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9416 Valid, 16957 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:35:21,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68650 states. [2021-11-23 13:35:24,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68650 to 68633. [2021-11-23 13:35:24,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68633 states, 68628 states have (on average 1.8152649064521769) internal successors, (124578), 68632 states have internal predecessors, (124578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:25,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68633 states to 68633 states and 124578 transitions. [2021-11-23 13:35:25,064 INFO L78 Accepts]: Start accepts. Automaton has 68633 states and 124578 transitions. Word has length 89 [2021-11-23 13:35:25,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:25,064 INFO L470 AbstractCegarLoop]: Abstraction has 68633 states and 124578 transitions. [2021-11-23 13:35:25,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:25,064 INFO L276 IsEmpty]: Start isEmpty. Operand 68633 states and 124578 transitions. [2021-11-23 13:35:25,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-23 13:35:25,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:25,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:25,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 13:35:25,070 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 13:35:25,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:25,071 INFO L85 PathProgramCache]: Analyzing trace with hash -305480983, now seen corresponding path program 1 times [2021-11-23 13:35:25,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:25,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087925165] [2021-11-23 13:35:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:25,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:25,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:25,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:25,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087925165] [2021-11-23 13:35:25,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087925165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:25,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:25,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:35:25,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516054759] [2021-11-23 13:35:25,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:25,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:35:25,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:25,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:35:25,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:35:25,131 INFO L87 Difference]: Start difference. First operand 68633 states and 124578 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:30,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:30,639 INFO L93 Difference]: Finished difference Result 191376 states and 346993 transitions. [2021-11-23 13:35:30,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:35:30,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-23 13:35:30,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:30,942 INFO L225 Difference]: With dead ends: 191376 [2021-11-23 13:35:30,942 INFO L226 Difference]: Without dead ends: 131574 [2021-11-23 13:35:31,001 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 [2021-11-23 13:35:31,002 INFO L933 BasicCegarLoop]: 9463 mSDtfsCounter, 9401 mSDsluCounter, 7498 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9401 SdHoareTripleChecker+Valid, 16961 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:31,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9401 Valid, 16961 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:35:31,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131574 states.