./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product35.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_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/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_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/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_9ff3c573-ba99-4330-ac40-4a5e08971dfc/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 4b1644ee409dd7fb9188781699149bb283de125dad063a54175775584b617862 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:41:20,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:41:20,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:41:21,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:41:21,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:41:21,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:41:21,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:41:21,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:41:21,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:41:21,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:41:21,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:41:21,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:41:21,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:41:21,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:41:21,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:41:21,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:41:21,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:41:21,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:41:21,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:41:21,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:41:21,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:41:21,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:41:21,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:41:21,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:41:21,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:41:21,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:41:21,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:41:21,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:41:21,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:41:21,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:41:21,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:41:21,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:41:21,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:41:21,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:41:21,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:41:21,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:41:21,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:41:21,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:41:21,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:41:21,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:41:21,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:41:21,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:41:21,157 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:41:21,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:41:21,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:41:21,159 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:41:21,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:41:21,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:41:21,161 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:41:21,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:41:21,171 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:41:21,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:41:21,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:41:21,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:41:21,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:41:21,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:41:21,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:41:21,182 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:41:21,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:41:21,182 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:41:21,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:41:21,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:41:21,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:41:21,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:41:21,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:41:21,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:41:21,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:41:21,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:41:21,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:41:21,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:41:21,186 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:41:21,188 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:41:21,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:41:21,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:41:21,189 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_9ff3c573-ba99-4330-ac40-4a5e08971dfc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b1644ee409dd7fb9188781699149bb283de125dad063a54175775584b617862 [2021-11-23 13:41:21,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:41:21,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:41:21,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:41:21,555 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:41:21,556 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:41:21,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/product-lines/email_spec6_product35.cil.c [2021-11-23 13:41:21,642 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G/data/2a7b8f914/922e6bd50e57457cbd07bfeb00a294ce/FLAG54b95ab7a [2021-11-23 13:41:22,514 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:41:22,514 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/sv-benchmarks/c/product-lines/email_spec6_product35.cil.c [2021-11-23 13:41:22,545 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G/data/2a7b8f914/922e6bd50e57457cbd07bfeb00a294ce/FLAG54b95ab7a [2021-11-23 13:41:22,631 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G/data/2a7b8f914/922e6bd50e57457cbd07bfeb00a294ce [2021-11-23 13:41:22,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:41:22,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:41:22,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:41:22,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:41:22,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:41:22,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:41:22" (1/1) ... [2021-11-23 13:41:22,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b67602d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:22, skipping insertion in model container [2021-11-23 13:41:22,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:41:22" (1/1) ... [2021-11-23 13:41:22,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:41:22,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:41:23,467 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_9ff3c573-ba99-4330-ac40-4a5e08971dfc/sv-benchmarks/c/product-lines/email_spec6_product35.cil.c[24735,24748] [2021-11-23 13:41:23,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:41:23,702 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:41:23,765 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_9ff3c573-ba99-4330-ac40-4a5e08971dfc/sv-benchmarks/c/product-lines/email_spec6_product35.cil.c[24735,24748] [2021-11-23 13:41:23,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:41:23,887 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:41:23,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:23 WrapperNode [2021-11-23 13:41:23,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:41:23,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:41:23,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:41:23,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:41:23,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:23" (1/1) ... [2021-11-23 13:41:23,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:23" (1/1) ... [2021-11-23 13:41:24,324 INFO L137 Inliner]: procedures = 138, calls = 254, calls flagged for inlining = 155, calls inlined = 480, statements flattened = 7576 [2021-11-23 13:41:24,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:41:24,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:41:24,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:41:24,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:41:24,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:23" (1/1) ... [2021-11-23 13:41:24,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:23" (1/1) ... [2021-11-23 13:41:24,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:23" (1/1) ... [2021-11-23 13:41:24,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:23" (1/1) ... [2021-11-23 13:41:24,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:23" (1/1) ... [2021-11-23 13:41:24,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:23" (1/1) ... [2021-11-23 13:41:24,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:23" (1/1) ... [2021-11-23 13:41:24,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:41:24,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:41:24,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:41:24,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:41:24,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:23" (1/1) ... [2021-11-23 13:41:24,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:41:24,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:41:24,615 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:41:24,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:41:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 13:41:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:41:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:41:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:41:24,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:41:25,199 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:41:25,201 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:41:28,560 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:41:28,611 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:41:28,616 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 13:41:28,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:41:28 BoogieIcfgContainer [2021-11-23 13:41:28,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:41:28,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:41:28,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:41:28,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:41:28,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:41:22" (1/3) ... [2021-11-23 13:41:28,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39107048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:41:28, skipping insertion in model container [2021-11-23 13:41:28,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:23" (2/3) ... [2021-11-23 13:41:28,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39107048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:41:28, skipping insertion in model container [2021-11-23 13:41:28,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:41:28" (3/3) ... [2021-11-23 13:41:28,636 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_product35.cil.c [2021-11-23 13:41:28,645 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:41:28,646 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-23 13:41:28,718 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:41:28,726 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 13:41:28,726 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-23 13:41:28,783 INFO L276 IsEmpty]: Start isEmpty. Operand has 1499 states, 1492 states have (on average 1.6635388739946382) internal successors, (2482), 1498 states have internal predecessors, (2482), 0 states have call successors, (0), 0 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 13:41:28,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 13:41:28,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:28,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:41:28,806 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:28,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:28,812 INFO L85 PathProgramCache]: Analyzing trace with hash -929604239, now seen corresponding path program 1 times [2021-11-23 13:41:28,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:28,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316838185] [2021-11-23 13:41:28,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:28,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:29,192 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 13:41:29,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:29,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316838185] [2021-11-23 13:41:29,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316838185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:29,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:29,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:29,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579100011] [2021-11-23 13:41:29,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:29,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:29,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:29,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:29,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:29,237 INFO L87 Difference]: Start difference. First operand has 1499 states, 1492 states have (on average 1.6635388739946382) internal successors, (2482), 1498 states have internal predecessors, (2482), 0 states have call successors, (0), 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 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:29,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:29,560 INFO L93 Difference]: Finished difference Result 4444 states and 7370 transitions. [2021-11-23 13:41:29,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:29,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-23 13:41:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:29,595 INFO L225 Difference]: With dead ends: 4444 [2021-11-23 13:41:29,595 INFO L226 Difference]: Without dead ends: 2439 [2021-11-23 13:41:29,604 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 13:41:29,607 INFO L933 BasicCegarLoop]: 4895 mSDtfsCounter, 2443 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2443 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:29,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2443 Valid, 7333 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2021-11-23 13:41:29,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 1230. [2021-11-23 13:41:29,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1224 states have (on average 1.6723856209150327) internal successors, (2047), 1229 states have internal predecessors, (2047), 0 states have call successors, (0), 0 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 13:41:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 2047 transitions. [2021-11-23 13:41:29,728 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 2047 transitions. Word has length 64 [2021-11-23 13:41:29,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:29,729 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 2047 transitions. [2021-11-23 13:41:29,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:29,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 2047 transitions. [2021-11-23 13:41:29,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 13:41:29,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:29,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:41:29,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:41:29,736 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:29,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:29,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1369126728, now seen corresponding path program 1 times [2021-11-23 13:41:29,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:29,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671344324] [2021-11-23 13:41:29,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:29,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:29,889 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 13:41:29,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:29,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671344324] [2021-11-23 13:41:29,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671344324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:29,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:29,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:41:29,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706656514] [2021-11-23 13:41:29,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:29,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:41:29,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:29,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:41:29,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:41:29,895 INFO L87 Difference]: Start difference. First operand 1230 states and 2047 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:30,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:30,236 INFO L93 Difference]: Finished difference Result 3631 states and 6049 transitions. [2021-11-23 13:41:30,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:41:30,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-23 13:41:30,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:30,255 INFO L225 Difference]: With dead ends: 3631 [2021-11-23 13:41:30,255 INFO L226 Difference]: Without dead ends: 2424 [2021-11-23 13:41:30,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:41:30,260 INFO L933 BasicCegarLoop]: 4002 mSDtfsCounter, 4048 mSDsluCounter, 5995 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4048 SdHoareTripleChecker+Valid, 9997 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:30,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4048 Valid, 9997 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:30,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2021-11-23 13:41:30,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 1230. [2021-11-23 13:41:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1224 states have (on average 1.6715686274509804) internal successors, (2046), 1229 states have internal predecessors, (2046), 0 states have call successors, (0), 0 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 13:41:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 2046 transitions. [2021-11-23 13:41:30,334 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 2046 transitions. Word has length 66 [2021-11-23 13:41:30,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:30,336 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 2046 transitions. [2021-11-23 13:41:30,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:30,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 2046 transitions. [2021-11-23 13:41:30,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 13:41:30,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:30,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:41:30,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:41:30,348 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:30,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:30,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1314649011, now seen corresponding path program 1 times [2021-11-23 13:41:30,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:30,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831601184] [2021-11-23 13:41:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:30,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:30,480 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 13:41:30,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:30,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831601184] [2021-11-23 13:41:30,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831601184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:30,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:30,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:30,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269905056] [2021-11-23 13:41:30,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:30,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:30,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:30,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:30,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:30,488 INFO L87 Difference]: Start difference. First operand 1230 states and 2046 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:30,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:30,583 INFO L93 Difference]: Finished difference Result 2439 states and 4063 transitions. [2021-11-23 13:41:30,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:30,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-23 13:41:30,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:30,591 INFO L225 Difference]: With dead ends: 2439 [2021-11-23 13:41:30,591 INFO L226 Difference]: Without dead ends: 1237 [2021-11-23 13:41:30,593 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 13:41:30,595 INFO L933 BasicCegarLoop]: 2050 mSDtfsCounter, 2019 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:30,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2019 Valid, 2072 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:30,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2021-11-23 13:41:30,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1230. [2021-11-23 13:41:30,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1224 states have (on average 1.6691176470588236) internal successors, (2043), 1229 states have internal predecessors, (2043), 0 states have call successors, (0), 0 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 13:41:30,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 2043 transitions. [2021-11-23 13:41:30,723 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 2043 transitions. Word has length 67 [2021-11-23 13:41:30,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:30,723 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 2043 transitions. [2021-11-23 13:41:30,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:30,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 2043 transitions. [2021-11-23 13:41:30,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 13:41:30,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:30,727 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 13:41:30,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:41:30,728 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:30,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:30,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1108604494, now seen corresponding path program 1 times [2021-11-23 13:41:30,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:30,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409155687] [2021-11-23 13:41:30,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:30,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:30,870 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 13:41:30,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:30,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409155687] [2021-11-23 13:41:30,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409155687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:30,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:30,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:41:30,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507506923] [2021-11-23 13:41:30,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:30,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:41:30,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:30,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:41:30,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:41:30,880 INFO L87 Difference]: Start difference. First operand 1230 states and 2043 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 13:41:31,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:31,202 INFO L93 Difference]: Finished difference Result 3618 states and 6026 transitions. [2021-11-23 13:41:31,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:41:31,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 13:41:31,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:31,221 INFO L225 Difference]: With dead ends: 3618 [2021-11-23 13:41:31,221 INFO L226 Difference]: Without dead ends: 2421 [2021-11-23 13:41:31,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:41:31,239 INFO L933 BasicCegarLoop]: 2027 mSDtfsCounter, 9966 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9966 SdHoareTripleChecker+Valid, 4067 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:31,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9966 Valid, 4067 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:31,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2021-11-23 13:41:31,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1230. [2021-11-23 13:41:31,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1224 states have (on average 1.6683006535947713) internal successors, (2042), 1229 states have internal predecessors, (2042), 0 states have call successors, (0), 0 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 13:41:31,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 2042 transitions. [2021-11-23 13:41:31,334 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 2042 transitions. Word has length 69 [2021-11-23 13:41:31,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:31,335 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 2042 transitions. [2021-11-23 13:41:31,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 13:41:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 2042 transitions. [2021-11-23 13:41:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 13:41:31,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:31,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:41:31,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:41:31,339 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:31,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1908140317, now seen corresponding path program 1 times [2021-11-23 13:41:31,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:31,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775381596] [2021-11-23 13:41:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:31,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:31,456 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 13:41:31,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:31,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775381596] [2021-11-23 13:41:31,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775381596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:31,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:31,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:41:31,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791657697] [2021-11-23 13:41:31,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:31,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:41:31,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:31,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:41:31,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:41:31,461 INFO L87 Difference]: Start difference. First operand 1230 states and 2042 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:31,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:31,813 INFO L93 Difference]: Finished difference Result 3625 states and 6032 transitions. [2021-11-23 13:41:31,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:41:31,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-23 13:41:31,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:31,830 INFO L225 Difference]: With dead ends: 3625 [2021-11-23 13:41:31,830 INFO L226 Difference]: Without dead ends: 2428 [2021-11-23 13:41:31,833 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 13:41:31,836 INFO L933 BasicCegarLoop]: 2026 mSDtfsCounter, 9970 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9970 SdHoareTripleChecker+Valid, 4070 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:31,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9970 Valid, 4070 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:31,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2021-11-23 13:41:31,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 1230. [2021-11-23 13:41:31,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1224 states have (on average 1.667483660130719) internal successors, (2041), 1229 states have internal predecessors, (2041), 0 states have call successors, (0), 0 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 13:41:31,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 2041 transitions. [2021-11-23 13:41:31,938 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 2041 transitions. Word has length 70 [2021-11-23 13:41:31,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:31,939 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 2041 transitions. [2021-11-23 13:41:31,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:31,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 2041 transitions. [2021-11-23 13:41:31,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 13:41:31,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:31,947 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] [2021-11-23 13:41:31,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:41:31,947 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:31,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:31,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1752449363, now seen corresponding path program 1 times [2021-11-23 13:41:31,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:31,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395415980] [2021-11-23 13:41:31,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:31,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:32,056 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 13:41:32,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:32,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395415980] [2021-11-23 13:41:32,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395415980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:32,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:32,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:32,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769847669] [2021-11-23 13:41:32,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:32,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:32,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:32,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:32,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:32,060 INFO L87 Difference]: Start difference. First operand 1230 states and 2041 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 13:41:32,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:32,163 INFO L93 Difference]: Finished difference Result 2156 states and 3550 transitions. [2021-11-23 13:41:32,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:32,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-23 13:41:32,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:32,174 INFO L225 Difference]: With dead ends: 2156 [2021-11-23 13:41:32,174 INFO L226 Difference]: Without dead ends: 1233 [2021-11-23 13:41:32,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:32,178 INFO L933 BasicCegarLoop]: 2039 mSDtfsCounter, 1 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4076 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 13:41:32,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 4076 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:32,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2021-11-23 13:41:32,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1232. [2021-11-23 13:41:32,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1226 states have (on average 1.666394779771615) internal successors, (2043), 1231 states have internal predecessors, (2043), 0 states have call successors, (0), 0 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 13:41:32,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 2043 transitions. [2021-11-23 13:41:32,286 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 2043 transitions. Word has length 71 [2021-11-23 13:41:32,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:32,287 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 2043 transitions. [2021-11-23 13:41:32,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 13:41:32,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 2043 transitions. [2021-11-23 13:41:32,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 13:41:32,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:32,289 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:41:32,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:41:32,290 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:32,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:32,290 INFO L85 PathProgramCache]: Analyzing trace with hash 383058866, now seen corresponding path program 1 times [2021-11-23 13:41:32,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:32,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642606885] [2021-11-23 13:41:32,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:32,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:32,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:32,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642606885] [2021-11-23 13:41:32,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642606885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:32,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:32,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:32,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346923185] [2021-11-23 13:41:32,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:32,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:32,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:32,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:32,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:32,349 INFO L87 Difference]: Start difference. First operand 1232 states and 2043 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 13:41:32,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:32,537 INFO L93 Difference]: Finished difference Result 3568 states and 5939 transitions. [2021-11-23 13:41:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:32,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 13:41:32,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:32,553 INFO L225 Difference]: With dead ends: 3568 [2021-11-23 13:41:32,553 INFO L226 Difference]: Without dead ends: 2374 [2021-11-23 13:41:32,556 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 13:41:32,556 INFO L933 BasicCegarLoop]: 2040 mSDtfsCounter, 1991 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 3982 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:32,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1991 Valid, 3982 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:32,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2021-11-23 13:41:32,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 1451. [2021-11-23 13:41:32,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1445 states have (on average 1.6865051903114188) internal successors, (2437), 1450 states have internal predecessors, (2437), 0 states have call successors, (0), 0 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 13:41:32,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 2437 transitions. [2021-11-23 13:41:32,675 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 2437 transitions. Word has length 80 [2021-11-23 13:41:32,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:32,676 INFO L470 AbstractCegarLoop]: Abstraction has 1451 states and 2437 transitions. [2021-11-23 13:41:32,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 13:41:32,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 2437 transitions. [2021-11-23 13:41:32,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 13:41:32,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:32,679 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:41:32,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:41:32,679 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:32,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:32,681 INFO L85 PathProgramCache]: Analyzing trace with hash 695366144, now seen corresponding path program 1 times [2021-11-23 13:41:32,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:32,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312461865] [2021-11-23 13:41:32,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:32,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:32,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:32,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:32,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312461865] [2021-11-23 13:41:32,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312461865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:32,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:32,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:41:32,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795200578] [2021-11-23 13:41:32,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:32,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:41:32,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:32,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:41:32,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:41:32,791 INFO L87 Difference]: Start difference. First operand 1451 states and 2437 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:33,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:33,185 INFO L93 Difference]: Finished difference Result 4267 states and 7201 transitions. [2021-11-23 13:41:33,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:41:33,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-23 13:41:33,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:33,203 INFO L225 Difference]: With dead ends: 4267 [2021-11-23 13:41:33,204 INFO L226 Difference]: Without dead ends: 2854 [2021-11-23 13:41:33,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:41:33,207 INFO L933 BasicCegarLoop]: 4001 mSDtfsCounter, 4017 mSDsluCounter, 6001 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4017 SdHoareTripleChecker+Valid, 10002 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:33,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4017 Valid, 10002 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:41:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2021-11-23 13:41:33,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1451. [2021-11-23 13:41:33,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1445 states have (on average 1.685121107266436) internal successors, (2435), 1450 states have internal predecessors, (2435), 0 states have call successors, (0), 0 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 13:41:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 2435 transitions. [2021-11-23 13:41:33,364 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 2435 transitions. Word has length 81 [2021-11-23 13:41:33,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:33,365 INFO L470 AbstractCegarLoop]: Abstraction has 1451 states and 2435 transitions. [2021-11-23 13:41:33,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:33,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 2435 transitions. [2021-11-23 13:41:33,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 13:41:33,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:33,368 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:41:33,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 13:41:33,370 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:33,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:33,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1856999751, now seen corresponding path program 1 times [2021-11-23 13:41:33,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:33,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828097716] [2021-11-23 13:41:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:33,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:33,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:33,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:33,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828097716] [2021-11-23 13:41:33,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828097716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:33,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:33,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:33,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983759952] [2021-11-23 13:41:33,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:33,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:33,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:33,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:33,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:33,466 INFO L87 Difference]: Start difference. First operand 1451 states and 2435 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:33,733 INFO L93 Difference]: Finished difference Result 4265 states and 7193 transitions. [2021-11-23 13:41:33,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:33,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-23 13:41:33,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:33,755 INFO L225 Difference]: With dead ends: 4265 [2021-11-23 13:41:33,755 INFO L226 Difference]: Without dead ends: 2852 [2021-11-23 13:41:33,759 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 13:41:33,762 INFO L933 BasicCegarLoop]: 3545 mSDtfsCounter, 1988 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 5573 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:33,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1988 Valid, 5573 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:33,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-11-23 13:41:34,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1929. [2021-11-23 13:41:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1923 states have (on average 1.7150286011440459) internal successors, (3298), 1928 states have internal predecessors, (3298), 0 states have call successors, (0), 0 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 13:41:34,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3298 transitions. [2021-11-23 13:41:34,028 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3298 transitions. Word has length 82 [2021-11-23 13:41:34,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:34,029 INFO L470 AbstractCegarLoop]: Abstraction has 1929 states and 3298 transitions. [2021-11-23 13:41:34,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:34,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3298 transitions. [2021-11-23 13:41:34,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 13:41:34,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:34,034 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:41:34,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 13:41:34,034 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:34,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:34,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1675901926, now seen corresponding path program 1 times [2021-11-23 13:41:34,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:34,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636304590] [2021-11-23 13:41:34,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:34,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:34,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:34,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636304590] [2021-11-23 13:41:34,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636304590] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:41:34,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288404190] [2021-11-23 13:41:34,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:34,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:41:34,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:41:34,144 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:41:34,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:41:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:34,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:41:34,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:41:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:34,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:41:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:34,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288404190] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:41:34,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:41:34,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 13:41:34,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889747344] [2021-11-23 13:41:34,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:41:34,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:41:34,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:34,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:41:34,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:41:34,950 INFO L87 Difference]: Start difference. First operand 1929 states and 3298 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:35,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:35,703 INFO L93 Difference]: Finished difference Result 7621 states and 12922 transitions. [2021-11-23 13:41:35,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:41:35,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-23 13:41:35,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:35,742 INFO L225 Difference]: With dead ends: 7621 [2021-11-23 13:41:35,742 INFO L226 Difference]: Without dead ends: 6698 [2021-11-23 13:41:35,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:41:35,747 INFO L933 BasicCegarLoop]: 2038 mSDtfsCounter, 9933 mSDsluCounter, 10002 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9933 SdHoareTripleChecker+Valid, 12040 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:35,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9933 Valid, 12040 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:35,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6698 states. [2021-11-23 13:41:36,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6698 to 3929. [2021-11-23 13:41:36,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3923 states have (on average 1.7565638541932194) internal successors, (6891), 3928 states have internal predecessors, (6891), 0 states have call successors, (0), 0 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 13:41:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6891 transitions. [2021-11-23 13:41:36,105 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6891 transitions. Word has length 82 [2021-11-23 13:41:36,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:36,107 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6891 transitions. [2021-11-23 13:41:36,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:36,107 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6891 transitions. [2021-11-23 13:41:36,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 13:41:36,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:36,114 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] [2021-11-23 13:41:36,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:41:36,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff3c573-ba99-4330-ac40-4a5e08971dfc/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 13:41:36,328 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:36,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1330316564, now seen corresponding path program 1 times [2021-11-23 13:41:36,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:36,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319674252] [2021-11-23 13:41:36,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:36,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:36,402 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 13:41:36,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:36,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319674252] [2021-11-23 13:41:36,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319674252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:36,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:36,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:36,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563646670] [2021-11-23 13:41:36,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:36,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:36,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:36,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:36,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:36,406 INFO L87 Difference]: Start difference. First operand 3929 states and 6891 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 13:41:36,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:36,924 INFO L93 Difference]: Finished difference Result 10535 states and 18479 transitions. [2021-11-23 13:41:36,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:36,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-23 13:41:36,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:36,952 INFO L225 Difference]: With dead ends: 10535 [2021-11-23 13:41:36,953 INFO L226 Difference]: Without dead ends: 6806 [2021-11-23 13:41:36,960 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 13:41:36,961 INFO L933 BasicCegarLoop]: 2040 mSDtfsCounter, 1986 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1986 SdHoareTripleChecker+Valid, 4067 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:36,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1986 Valid, 4067 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:36,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6806 states. [2021-11-23 13:41:37,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6806 to 5883. [2021-11-23 13:41:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5883 states, 5877 states have (on average 1.7692700357325166) internal successors, (10398), 5882 states have internal predecessors, (10398), 0 states have call successors, (0), 0 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 13:41:37,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5883 states to 5883 states and 10398 transitions. [2021-11-23 13:41:37,472 INFO L78 Accepts]: Start accepts. Automaton has 5883 states and 10398 transitions. Word has length 85 [2021-11-23 13:41:37,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:37,472 INFO L470 AbstractCegarLoop]: Abstraction has 5883 states and 10398 transitions. [2021-11-23 13:41:37,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 13:41:37,474 INFO L276 IsEmpty]: Start isEmpty. Operand 5883 states and 10398 transitions. [2021-11-23 13:41:37,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 13:41:37,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:37,492 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 13:41:37,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 13:41:37,493 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:37,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:37,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1007633978, now seen corresponding path program 1 times [2021-11-23 13:41:37,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:37,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339688095] [2021-11-23 13:41:37,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:37,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:37,566 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 13:41:37,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:37,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339688095] [2021-11-23 13:41:37,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339688095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:37,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:37,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:37,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040925141] [2021-11-23 13:41:37,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:37,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:37,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:37,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:37,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:37,569 INFO L87 Difference]: Start difference. First operand 5883 states and 10398 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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 13:41:38,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:38,196 INFO L93 Difference]: Finished difference Result 14923 states and 26349 transitions. [2021-11-23 13:41:38,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:38,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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 13:41:38,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:38,226 INFO L225 Difference]: With dead ends: 14923 [2021-11-23 13:41:38,226 INFO L226 Difference]: Without dead ends: 9607 [2021-11-23 13:41:38,235 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 13:41:38,236 INFO L933 BasicCegarLoop]: 2039 mSDtfsCounter, 1984 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1984 SdHoareTripleChecker+Valid, 4018 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:38,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1984 Valid, 4018 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9607 states. [2021-11-23 13:41:38,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9607 to 8684. [2021-11-23 13:41:38,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8684 states, 8678 states have (on average 1.7750633786586771) internal successors, (15404), 8683 states have internal predecessors, (15404), 0 states have call successors, (0), 0 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 13:41:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8684 states to 8684 states and 15404 transitions. [2021-11-23 13:41:38,889 INFO L78 Accepts]: Start accepts. Automaton has 8684 states and 15404 transitions. Word has length 86 [2021-11-23 13:41:38,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:38,889 INFO L470 AbstractCegarLoop]: Abstraction has 8684 states and 15404 transitions. [2021-11-23 13:41:38,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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 13:41:38,890 INFO L276 IsEmpty]: Start isEmpty. Operand 8684 states and 15404 transitions. [2021-11-23 13:41:38,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 13:41:38,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:38,905 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 13:41:38,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 13:41:38,906 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:38,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:38,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1075557026, now seen corresponding path program 1 times [2021-11-23 13:41:38,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:38,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576838552] [2021-11-23 13:41:38,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:38,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:38,988 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 13:41:38,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:38,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576838552] [2021-11-23 13:41:38,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576838552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:38,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:38,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:38,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109874557] [2021-11-23 13:41:38,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:38,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:38,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:38,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:38,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:38,992 INFO L87 Difference]: Start difference. First operand 8684 states and 15404 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 13:41:39,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:39,805 INFO L93 Difference]: Finished difference Result 21551 states and 38207 transitions. [2021-11-23 13:41:39,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:39,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 13:41:39,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:39,850 INFO L225 Difference]: With dead ends: 21551 [2021-11-23 13:41:39,850 INFO L226 Difference]: Without dead ends: 14023 [2021-11-23 13:41:39,867 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 13:41:39,868 INFO L933 BasicCegarLoop]: 2039 mSDtfsCounter, 1982 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 4018 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:39,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1982 Valid, 4018 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:39,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14023 states. [2021-11-23 13:41:40,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14023 to 13100. [2021-11-23 13:41:40,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13100 states, 13094 states have (on average 1.7780662899037727) internal successors, (23282), 13099 states have internal predecessors, (23282), 0 states have call successors, (0), 0 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 13:41:40,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13100 states to 13100 states and 23282 transitions. [2021-11-23 13:41:40,838 INFO L78 Accepts]: Start accepts. Automaton has 13100 states and 23282 transitions. Word has length 87 [2021-11-23 13:41:40,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:40,839 INFO L470 AbstractCegarLoop]: Abstraction has 13100 states and 23282 transitions. [2021-11-23 13:41:40,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 13:41:40,839 INFO L276 IsEmpty]: Start isEmpty. Operand 13100 states and 23282 transitions. [2021-11-23 13:41:40,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:41:40,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:40,860 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 13:41:40,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 13:41:40,861 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:40,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:40,862 INFO L85 PathProgramCache]: Analyzing trace with hash 925724726, now seen corresponding path program 1 times [2021-11-23 13:41:40,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:40,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441744717] [2021-11-23 13:41:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:40,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:40,926 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 13:41:40,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:40,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441744717] [2021-11-23 13:41:40,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441744717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:40,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:40,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:40,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151050625] [2021-11-23 13:41:40,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:40,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:40,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:40,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:40,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:40,930 INFO L87 Difference]: Start difference. First operand 13100 states and 23282 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:42,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:42,343 INFO L93 Difference]: Finished difference Result 33610 states and 59826 transitions. [2021-11-23 13:41:42,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:42,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-23 13:41:42,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:42,430 INFO L225 Difference]: With dead ends: 33610 [2021-11-23 13:41:42,430 INFO L226 Difference]: Without dead ends: 22214 [2021-11-23 13:41:42,453 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 13:41:42,454 INFO L933 BasicCegarLoop]: 2039 mSDtfsCounter, 1980 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1980 SdHoareTripleChecker+Valid, 4066 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:42,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1980 Valid, 4066 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:42,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22214 states. [2021-11-23 13:41:43,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22214 to 21291. [2021-11-23 13:41:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21291 states, 21285 states have (on average 1.7822410147991543) internal successors, (37935), 21290 states have internal predecessors, (37935), 0 states have call successors, (0), 0 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 13:41:44,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21291 states to 21291 states and 37935 transitions. [2021-11-23 13:41:44,025 INFO L78 Accepts]: Start accepts. Automaton has 21291 states and 37935 transitions. Word has length 88 [2021-11-23 13:41:44,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:44,025 INFO L470 AbstractCegarLoop]: Abstraction has 21291 states and 37935 transitions. [2021-11-23 13:41:44,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:44,026 INFO L276 IsEmpty]: Start isEmpty. Operand 21291 states and 37935 transitions. [2021-11-23 13:41:44,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-23 13:41:44,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:44,051 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 13:41:44,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 13:41:44,051 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:44,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:44,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1512133582, now seen corresponding path program 1 times [2021-11-23 13:41:44,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:44,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493665996] [2021-11-23 13:41:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:44,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:44,103 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 13:41:44,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:44,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493665996] [2021-11-23 13:41:44,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493665996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:44,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:44,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:44,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230630428] [2021-11-23 13:41:44,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:44,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:44,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:44,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:44,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:44,106 INFO L87 Difference]: Start difference. First operand 21291 states and 37935 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 13:41:45,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:45,924 INFO L93 Difference]: Finished difference Result 55541 states and 99251 transitions. [2021-11-23 13:41:45,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:45,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 13:41:45,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:46,041 INFO L225 Difference]: With dead ends: 55541 [2021-11-23 13:41:46,041 INFO L226 Difference]: Without dead ends: 36844 [2021-11-23 13:41:46,070 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 13:41:46,072 INFO L933 BasicCegarLoop]: 2039 mSDtfsCounter, 1978 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 4065 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:46,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1978 Valid, 4065 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:46,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36844 states. [2021-11-23 13:41:47,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36844 to 35921. [2021-11-23 13:41:47,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35921 states, 35915 states have (on average 1.786941389391619) internal successors, (64178), 35920 states have internal predecessors, (64178), 0 states have call successors, (0), 0 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 13:41:48,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35921 states to 35921 states and 64178 transitions. [2021-11-23 13:41:48,068 INFO L78 Accepts]: Start accepts. Automaton has 35921 states and 64178 transitions. Word has length 89 [2021-11-23 13:41:48,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:48,069 INFO L470 AbstractCegarLoop]: Abstraction has 35921 states and 64178 transitions. [2021-11-23 13:41:48,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 13:41:48,069 INFO L276 IsEmpty]: Start isEmpty. Operand 35921 states and 64178 transitions. [2021-11-23 13:41:48,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-23 13:41:48,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:48,103 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 13:41:48,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 13:41:48,104 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:48,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:48,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1684223192, now seen corresponding path program 1 times [2021-11-23 13:41:48,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:48,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544188456] [2021-11-23 13:41:48,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:48,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:48,170 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 13:41:48,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:48,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544188456] [2021-11-23 13:41:48,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544188456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:48,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:48,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:48,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156296295] [2021-11-23 13:41:48,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:48,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:48,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:48,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:48,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:48,174 INFO L87 Difference]: Start difference. First operand 35921 states and 64178 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:50,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:50,616 INFO L93 Difference]: Finished difference Result 89788 states and 159990 transitions. [2021-11-23 13:41:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:50,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-23 13:41:50,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:50,939 INFO L225 Difference]: With dead ends: 89788 [2021-11-23 13:41:50,939 INFO L226 Difference]: Without dead ends: 58699 [2021-11-23 13:41:50,975 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 13:41:50,976 INFO L933 BasicCegarLoop]: 2039 mSDtfsCounter, 1976 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 3991 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:50,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1976 Valid, 3991 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:51,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58699 states. [2021-11-23 13:41:53,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58699 to 57776. [2021-11-23 13:41:53,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57776 states, 57770 states have (on average 1.7770815302059892) internal successors, (102662), 57775 states have internal predecessors, (102662), 0 states have call successors, (0), 0 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 13:41:54,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57776 states to 57776 states and 102662 transitions. [2021-11-23 13:41:54,327 INFO L78 Accepts]: Start accepts. Automaton has 57776 states and 102662 transitions. Word has length 90 [2021-11-23 13:41:54,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:54,327 INFO L470 AbstractCegarLoop]: Abstraction has 57776 states and 102662 transitions. [2021-11-23 13:41:54,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:41:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand 57776 states and 102662 transitions. [2021-11-23 13:41:54,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-23 13:41:54,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:54,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:41:54,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 13:41:54,364 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:41:54,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:54,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1676758014, now seen corresponding path program 1 times [2021-11-23 13:41:54,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:54,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805127769] [2021-11-23 13:41:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:54,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:54,425 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 13:41:54,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:54,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805127769] [2021-11-23 13:41:54,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805127769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:41:54,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:41:54,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:41:54,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624276200] [2021-11-23 13:41:54,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:41:54,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:41:54,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:54,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:41:54,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:41:54,430 INFO L87 Difference]: Start difference. First operand 57776 states and 102662 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 13:41:58,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:58,465 INFO L93 Difference]: Finished difference Result 148959 states and 264615 transitions. [2021-11-23 13:41:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:41:58,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-23 13:41:58,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:58,724 INFO L225 Difference]: With dead ends: 148959 [2021-11-23 13:41:58,724 INFO L226 Difference]: Without dead ends: 98353 [2021-11-23 13:41:58,811 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 13:41:58,817 INFO L933 BasicCegarLoop]: 2039 mSDtfsCounter, 1974 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 4018 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:58,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1974 Valid, 4018 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:41:58,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98353 states. [2021-11-23 13:42:03,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98353 to 97430. [2021-11-23 13:42:03,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97430 states, 97424 states have (on average 1.7733412711446872) internal successors, (172766), 97429 states have internal predecessors, (172766), 0 states have call successors, (0), 0 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 13:42:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97430 states to 97430 states and 172766 transitions. [2021-11-23 13:42:04,163 INFO L78 Accepts]: Start accepts. Automaton has 97430 states and 172766 transitions. Word has length 91 [2021-11-23 13:42:04,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:42:04,164 INFO L470 AbstractCegarLoop]: Abstraction has 97430 states and 172766 transitions. [2021-11-23 13:42:04,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 13:42:04,164 INFO L276 IsEmpty]: Start isEmpty. Operand 97430 states and 172766 transitions. [2021-11-23 13:42:04,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-23 13:42:04,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:42:04,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:42:04,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 13:42:04,199 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 13:42:04,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:42:04,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1747673312, now seen corresponding path program 1 times [2021-11-23 13:42:04,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:42:04,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385440453] [2021-11-23 13:42:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:42:04,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:42:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:42:04,255 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 13:42:04,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:42:04,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385440453] [2021-11-23 13:42:04,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385440453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:42:04,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:42:04,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:42:04,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602819457] [2021-11-23 13:42:04,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:42:04,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:42:04,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:42:04,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:42:04,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:42:04,259 INFO L87 Difference]: Start difference. First operand 97430 states and 172766 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 13:42:11,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:42:11,373 INFO L93 Difference]: Finished difference Result 268731 states and 477667 transitions. [2021-11-23 13:42:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:42:11,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-23 13:42:11,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:42:11,811 INFO L225 Difference]: With dead ends: 268731 [2021-11-23 13:42:11,811 INFO L226 Difference]: Without dead ends: 180491 [2021-11-23 13:42:11,915 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 13:42:11,916 INFO L933 BasicCegarLoop]: 2039 mSDtfsCounter, 1972 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1972 SdHoareTripleChecker+Valid, 4065 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:42:11,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1972 Valid, 4065 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:42:12,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180491 states.