./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX --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 82ac70e4cab6ba17956a8bc3031bcd401426df4beecacca096cae721fbfd8afd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:33:21,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:33:21,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:33:21,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:33:21,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:33:21,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:33:21,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:33:21,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:33:21,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:33:21,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:33:21,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:33:21,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:33:21,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:33:21,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:33:21,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:33:21,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:33:21,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:33:21,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:33:21,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:33:21,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:33:21,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:33:21,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:33:21,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:33:21,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:33:21,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:33:21,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:33:21,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:33:21,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:33:21,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:33:21,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:33:21,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:33:21,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:33:21,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:33:21,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:33:21,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:33:21,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:33:21,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:33:21,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:33:21,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:33:21,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:33:21,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:33:21,177 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:33:21,226 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:33:21,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:33:21,227 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:33:21,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:33:21,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:33:21,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:33:21,230 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:33:21,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:33:21,230 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:33:21,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:33:21,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:33:21,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:33:21,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:33:21,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:33:21,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:33:21,233 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:33:21,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:33:21,233 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:33:21,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:33:21,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:33:21,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:33:21,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:33:21,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:33:21,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:33:21,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:33:21,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:33:21,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:33:21,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:33:21,236 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:33:21,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:33:21,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:33:21,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:33:21,239 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_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82ac70e4cab6ba17956a8bc3031bcd401426df4beecacca096cae721fbfd8afd [2021-11-09 09:33:21,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:33:21,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:33:21,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:33:21,541 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:33:21,542 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:33:21,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/product-lines/email_spec9_product26.cil.c [2021-11-09 09:33:21,605 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/data/45517c4d9/b81c52e1aea64b3aae2f177b59d950d5/FLAGb095cf09c [2021-11-09 09:33:22,242 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:33:22,243 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/sv-benchmarks/c/product-lines/email_spec9_product26.cil.c [2021-11-09 09:33:22,265 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/data/45517c4d9/b81c52e1aea64b3aae2f177b59d950d5/FLAGb095cf09c [2021-11-09 09:33:22,416 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/data/45517c4d9/b81c52e1aea64b3aae2f177b59d950d5 [2021-11-09 09:33:22,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:33:22,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:33:22,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:33:22,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:33:22,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:33:22,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:33:22" (1/1) ... [2021-11-09 09:33:22,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64d6c5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:22, skipping insertion in model container [2021-11-09 09:33:22,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:33:22" (1/1) ... [2021-11-09 09:33:22,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:33:22,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:33:22,991 WARN L228 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_5a53bdac-4794-4288-847a-ab2186f6e7f1/sv-benchmarks/c/product-lines/email_spec9_product26.cil.c[24949,24962] [2021-11-09 09:33:23,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:33:23,258 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:33:23,319 WARN L228 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_5a53bdac-4794-4288-847a-ab2186f6e7f1/sv-benchmarks/c/product-lines/email_spec9_product26.cil.c[24949,24962] [2021-11-09 09:33:23,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:33:23,405 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:33:23,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:23 WrapperNode [2021-11-09 09:33:23,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:33:23,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:33:23,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:33:23,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:33:23,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:23" (1/1) ... [2021-11-09 09:33:23,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:23" (1/1) ... [2021-11-09 09:33:23,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:33:23,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:33:23,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:33:23,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:33:23,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:23" (1/1) ... [2021-11-09 09:33:23,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:23" (1/1) ... [2021-11-09 09:33:23,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:23" (1/1) ... [2021-11-09 09:33:23,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:23" (1/1) ... [2021-11-09 09:33:23,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:23" (1/1) ... [2021-11-09 09:33:23,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:23" (1/1) ... [2021-11-09 09:33:23,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:23" (1/1) ... [2021-11-09 09:33:23,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:33:23,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:33:23,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:33:23,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:33:23,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:23" (1/1) ... [2021-11-09 09:33:23,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:33:23,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:23,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:33:23,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:33:23,939 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-09 09:33:23,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:33:23,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:33:23,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:33:23,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:33:27,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:33:27,219 INFO L299 CfgBuilder]: Removed 725 assume(true) statements. [2021-11-09 09:33:27,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:27 BoogieIcfgContainer [2021-11-09 09:33:27,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:33:27,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:33:27,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:33:27,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:33:27,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:33:22" (1/3) ... [2021-11-09 09:33:27,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e45f99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:33:27, skipping insertion in model container [2021-11-09 09:33:27,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:23" (2/3) ... [2021-11-09 09:33:27,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e45f99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:33:27, skipping insertion in model container [2021-11-09 09:33:27,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:27" (3/3) ... [2021-11-09 09:33:27,233 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product26.cil.c [2021-11-09 09:33:27,239 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:33:27,239 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-09 09:33:27,297 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:33:27,304 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 [2021-11-09 09:33:27,304 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-09 09:33:27,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 1038 states, 1031 states have (on average 1.729388942774006) internal successors, (1783), 1037 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:27,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-09 09:33:27,356 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:27,356 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:27,357 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)] === [2021-11-09 09:33:27,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:27,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1931887788, now seen corresponding path program 1 times [2021-11-09 09:33:27,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:27,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951892500] [2021-11-09 09:33:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:27,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:27,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:27,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951892500] [2021-11-09 09:33:27,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951892500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:27,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:27,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:33:27,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419804209] [2021-11-09 09:33:27,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:27,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:27,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:27,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:27,897 INFO L87 Difference]: Start difference. First operand has 1038 states, 1031 states have (on average 1.729388942774006) internal successors, (1783), 1037 states have internal predecessors, (1783), 0 states have call successors, (0), 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 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:28,370 INFO L93 Difference]: Finished difference Result 3079 states and 5291 transitions. [2021-11-09 09:33:28,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:28,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-09 09:33:28,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:28,415 INFO L225 Difference]: With dead ends: 3079 [2021-11-09 09:33:28,415 INFO L226 Difference]: Without dead ends: 1752 [2021-11-09 09:33:28,427 INFO L786 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 [2021-11-09 09:33:28,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2021-11-09 09:33:28,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 885. [2021-11-09 09:33:28,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 879 states have (on average 1.7292377701934016) internal successors, (1520), 884 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1520 transitions. [2021-11-09 09:33:28,549 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1520 transitions. Word has length 44 [2021-11-09 09:33:28,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:28,550 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1520 transitions. [2021-11-09 09:33:28,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,551 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1520 transitions. [2021-11-09 09:33:28,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-09 09:33:28,554 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:28,554 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:28,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:33:28,555 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)] === [2021-11-09 09:33:28,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:28,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1357793597, now seen corresponding path program 1 times [2021-11-09 09:33:28,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:28,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534636759] [2021-11-09 09:33:28,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:28,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:28,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:28,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:28,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534636759] [2021-11-09 09:33:28,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534636759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:28,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:28,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:33:28,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426120987] [2021-11-09 09:33:28,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:33:28,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:28,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:33:28,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:33:28,692 INFO L87 Difference]: Start difference. First operand 885 states and 1520 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:28,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:28,927 INFO L93 Difference]: Finished difference Result 2604 states and 4476 transitions. [2021-11-09 09:33:28,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:33:28,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-09 09:33:28,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:28,943 INFO L225 Difference]: With dead ends: 2604 [2021-11-09 09:33:28,943 INFO L226 Difference]: Without dead ends: 1738 [2021-11-09 09:33:28,945 INFO L786 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 [2021-11-09 09:33:28,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2021-11-09 09:33:29,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 885. [2021-11-09 09:33:29,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 879 states have (on average 1.7281001137656429) internal successors, (1519), 884 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1519 transitions. [2021-11-09 09:33:29,047 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1519 transitions. Word has length 46 [2021-11-09 09:33:29,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:29,047 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1519 transitions. [2021-11-09 09:33:29,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:29,048 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1519 transitions. [2021-11-09 09:33:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-09 09:33:29,052 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:29,053 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:29,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:33:29,055 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)] === [2021-11-09 09:33:29,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:29,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1466918346, now seen corresponding path program 1 times [2021-11-09 09:33:29,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:29,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737588363] [2021-11-09 09:33:29,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:29,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:29,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:29,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737588363] [2021-11-09 09:33:29,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737588363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:29,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:29,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:33:29,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734910450] [2021-11-09 09:33:29,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:29,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:29,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:29,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:29,227 INFO L87 Difference]: Start difference. First operand 885 states and 1519 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:29,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:29,310 INFO L93 Difference]: Finished difference Result 1752 states and 3012 transitions. [2021-11-09 09:33:29,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:29,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-09 09:33:29,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:29,317 INFO L225 Difference]: With dead ends: 1752 [2021-11-09 09:33:29,317 INFO L226 Difference]: Without dead ends: 890 [2021-11-09 09:33:29,319 INFO L786 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 [2021-11-09 09:33:29,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-11-09 09:33:29,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 885. [2021-11-09 09:33:29,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 879 states have (on average 1.7246871444823664) internal successors, (1516), 884 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1516 transitions. [2021-11-09 09:33:29,371 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1516 transitions. Word has length 47 [2021-11-09 09:33:29,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:29,372 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1516 transitions. [2021-11-09 09:33:29,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1516 transitions. [2021-11-09 09:33:29,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-09 09:33:29,374 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:29,374 INFO L513 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] [2021-11-09 09:33:29,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:33:29,375 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)] === [2021-11-09 09:33:29,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:29,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1328180709, now seen corresponding path program 1 times [2021-11-09 09:33:29,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:29,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715626082] [2021-11-09 09:33:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:29,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:29,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:29,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715626082] [2021-11-09 09:33:29,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715626082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:29,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:29,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:33:29,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98773980] [2021-11-09 09:33:29,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:33:29,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:29,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:33:29,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:33:29,498 INFO L87 Difference]: Start difference. First operand 885 states and 1516 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:29,721 INFO L93 Difference]: Finished difference Result 2594 states and 4456 transitions. [2021-11-09 09:33:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:33:29,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-09 09:33:29,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:29,733 INFO L225 Difference]: With dead ends: 2594 [2021-11-09 09:33:29,733 INFO L226 Difference]: Without dead ends: 1736 [2021-11-09 09:33:29,735 INFO L786 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 [2021-11-09 09:33:29,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2021-11-09 09:33:29,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 885. [2021-11-09 09:33:29,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 879 states have (on average 1.7235494880546076) internal successors, (1515), 884 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:29,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1515 transitions. [2021-11-09 09:33:29,787 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1515 transitions. Word has length 49 [2021-11-09 09:33:29,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:29,788 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1515 transitions. [2021-11-09 09:33:29,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:29,788 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1515 transitions. [2021-11-09 09:33:29,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 09:33:29,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:29,790 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:29,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:33:29,791 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)] === [2021-11-09 09:33:29,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:29,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1541028168, now seen corresponding path program 1 times [2021-11-09 09:33:29,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:29,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963542051] [2021-11-09 09:33:29,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:29,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:29,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:29,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963542051] [2021-11-09 09:33:29,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963542051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:29,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:29,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:33:29,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173347764] [2021-11-09 09:33:29,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:33:29,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:29,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:33:29,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:33:29,872 INFO L87 Difference]: Start difference. First operand 885 states and 1515 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:30,082 INFO L93 Difference]: Finished difference Result 2599 states and 4460 transitions. [2021-11-09 09:33:30,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:33:30,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-09 09:33:30,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:30,096 INFO L225 Difference]: With dead ends: 2599 [2021-11-09 09:33:30,096 INFO L226 Difference]: Without dead ends: 1741 [2021-11-09 09:33:30,100 INFO L786 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 [2021-11-09 09:33:30,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2021-11-09 09:33:30,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 885. [2021-11-09 09:33:30,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 879 states have (on average 1.7224118316268486) internal successors, (1514), 884 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1514 transitions. [2021-11-09 09:33:30,169 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1514 transitions. Word has length 50 [2021-11-09 09:33:30,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:30,170 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1514 transitions. [2021-11-09 09:33:30,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,170 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1514 transitions. [2021-11-09 09:33:30,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-09 09:33:30,172 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:30,173 INFO L513 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] [2021-11-09 09:33:30,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:33:30,174 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)] === [2021-11-09 09:33:30,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:30,174 INFO L85 PathProgramCache]: Analyzing trace with hash -394054560, now seen corresponding path program 1 times [2021-11-09 09:33:30,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:30,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851606435] [2021-11-09 09:33:30,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:30,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:30,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:30,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851606435] [2021-11-09 09:33:30,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851606435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:30,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:30,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:33:30,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341459765] [2021-11-09 09:33:30,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:30,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:30,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:30,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:30,317 INFO L87 Difference]: Start difference. First operand 885 states and 1514 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:30,384 INFO L93 Difference]: Finished difference Result 1485 states and 2515 transitions. [2021-11-09 09:33:30,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:30,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-09 09:33:30,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:30,394 INFO L225 Difference]: With dead ends: 1485 [2021-11-09 09:33:30,394 INFO L226 Difference]: Without dead ends: 888 [2021-11-09 09:33:30,395 INFO L786 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 [2021-11-09 09:33:30,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-11-09 09:33:30,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 887. [2021-11-09 09:33:30,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 881 states have (on average 1.7207718501702611) internal successors, (1516), 886 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1516 transitions. [2021-11-09 09:33:30,447 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1516 transitions. Word has length 51 [2021-11-09 09:33:30,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:30,448 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1516 transitions. [2021-11-09 09:33:30,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,448 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1516 transitions. [2021-11-09 09:33:30,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-09 09:33:30,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:30,450 INFO L513 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] [2021-11-09 09:33:30,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 09:33:30,450 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)] === [2021-11-09 09:33:30,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:30,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1512460722, now seen corresponding path program 1 times [2021-11-09 09:33:30,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:30,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92685780] [2021-11-09 09:33:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:30,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:30,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:30,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92685780] [2021-11-09 09:33:30,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92685780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:30,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:30,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:33:30,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606122485] [2021-11-09 09:33:30,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:30,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:30,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:30,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:30,547 INFO L87 Difference]: Start difference. First operand 887 states and 1516 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:30,648 INFO L93 Difference]: Finished difference Result 2547 states and 4372 transitions. [2021-11-09 09:33:30,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:30,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-09 09:33:30,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:30,660 INFO L225 Difference]: With dead ends: 2547 [2021-11-09 09:33:30,660 INFO L226 Difference]: Without dead ends: 1691 [2021-11-09 09:33:30,662 INFO L786 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 [2021-11-09 09:33:30,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2021-11-09 09:33:30,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1094. [2021-11-09 09:33:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1088 states have (on average 1.744485294117647) internal successors, (1898), 1093 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1898 transitions. [2021-11-09 09:33:30,737 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1898 transitions. Word has length 59 [2021-11-09 09:33:30,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:30,740 INFO L470 AbstractCegarLoop]: Abstraction has 1094 states and 1898 transitions. [2021-11-09 09:33:30,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:30,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1898 transitions. [2021-11-09 09:33:30,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-09 09:33:30,742 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:30,742 INFO L513 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] [2021-11-09 09:33:30,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:33:30,742 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)] === [2021-11-09 09:33:30,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:30,743 INFO L85 PathProgramCache]: Analyzing trace with hash 592220589, now seen corresponding path program 1 times [2021-11-09 09:33:30,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:30,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055030669] [2021-11-09 09:33:30,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:30,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:30,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:30,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055030669] [2021-11-09 09:33:30,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055030669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:30,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:30,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:33:30,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578110698] [2021-11-09 09:33:30,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:33:30,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:30,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:33:30,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:33:30,882 INFO L87 Difference]: Start difference. First operand 1094 states and 1898 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:31,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:31,353 INFO L93 Difference]: Finished difference Result 3212 states and 5600 transitions. [2021-11-09 09:33:31,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:33:31,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-09 09:33:31,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:31,368 INFO L225 Difference]: With dead ends: 3212 [2021-11-09 09:33:31,368 INFO L226 Difference]: Without dead ends: 2149 [2021-11-09 09:33:31,370 INFO L786 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 [2021-11-09 09:33:31,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2021-11-09 09:33:31,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1094. [2021-11-09 09:33:31,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1088 states have (on average 1.7426470588235294) internal successors, (1896), 1093 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:31,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1896 transitions. [2021-11-09 09:33:31,458 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1896 transitions. Word has length 60 [2021-11-09 09:33:31,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:31,458 INFO L470 AbstractCegarLoop]: Abstraction has 1094 states and 1896 transitions. [2021-11-09 09:33:31,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:31,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1896 transitions. [2021-11-09 09:33:31,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 09:33:31,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:31,460 INFO L513 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] [2021-11-09 09:33:31,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:33:31,461 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)] === [2021-11-09 09:33:31,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:31,461 INFO L85 PathProgramCache]: Analyzing trace with hash 447893252, now seen corresponding path program 1 times [2021-11-09 09:33:31,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:31,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604613523] [2021-11-09 09:33:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:31,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:31,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:31,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604613523] [2021-11-09 09:33:31,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604613523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:31,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:31,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:33:31,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801795143] [2021-11-09 09:33:31,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:31,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:31,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:31,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:31,525 INFO L87 Difference]: Start difference. First operand 1094 states and 1896 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:31,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:31,704 INFO L93 Difference]: Finished difference Result 3210 states and 5592 transitions. [2021-11-09 09:33:31,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:31,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-09 09:33:31,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:31,719 INFO L225 Difference]: With dead ends: 3210 [2021-11-09 09:33:31,720 INFO L226 Difference]: Without dead ends: 2147 [2021-11-09 09:33:31,722 INFO L786 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 [2021-11-09 09:33:31,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2021-11-09 09:33:31,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 1550. [2021-11-09 09:33:31,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1544 states have (on average 1.7726683937823835) internal successors, (2737), 1549 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:31,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 2737 transitions. [2021-11-09 09:33:31,853 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 2737 transitions. Word has length 61 [2021-11-09 09:33:31,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:31,854 INFO L470 AbstractCegarLoop]: Abstraction has 1550 states and 2737 transitions. [2021-11-09 09:33:31,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:31,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 2737 transitions. [2021-11-09 09:33:31,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 09:33:31,856 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:31,856 INFO L513 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] [2021-11-09 09:33:31,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 09:33:31,857 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)] === [2021-11-09 09:33:31,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:31,858 INFO L85 PathProgramCache]: Analyzing trace with hash 120529826, now seen corresponding path program 1 times [2021-11-09 09:33:31,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:31,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544821442] [2021-11-09 09:33:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:31,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:31,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:31,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544821442] [2021-11-09 09:33:31,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544821442] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:33:31,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123189003] [2021-11-09 09:33:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:31,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:31,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:31,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:33:31,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:33:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:32,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:33:32,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:33:32,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123189003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:32,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:33:32,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-09 09:33:32,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872372790] [2021-11-09 09:33:32,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:32,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:32,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:33:32,509 INFO L87 Difference]: Start difference. First operand 1550 states and 2737 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:32,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:32,662 INFO L93 Difference]: Finished difference Result 2060 states and 3583 transitions. [2021-11-09 09:33:32,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:32,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-09 09:33:32,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:32,673 INFO L225 Difference]: With dead ends: 2060 [2021-11-09 09:33:32,673 INFO L226 Difference]: Without dead ends: 1552 [2021-11-09 09:33:32,675 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:33:32,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2021-11-09 09:33:32,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1538. [2021-11-09 09:33:32,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1534 states have (on average 1.772490221642764) internal successors, (2719), 1537 states have internal predecessors, (2719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:32,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2719 transitions. [2021-11-09 09:33:32,805 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2719 transitions. Word has length 61 [2021-11-09 09:33:32,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:32,806 INFO L470 AbstractCegarLoop]: Abstraction has 1538 states and 2719 transitions. [2021-11-09 09:33:32,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:32,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2719 transitions. [2021-11-09 09:33:32,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-09 09:33:32,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:32,816 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:32,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:33:33,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 09:33:33,031 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:33,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:33,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1968095127, now seen corresponding path program 1 times [2021-11-09 09:33:33,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:33,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056411790] [2021-11-09 09:33:33,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:33,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:33,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:33,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056411790] [2021-11-09 09:33:33,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056411790] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:33:33,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188673617] [2021-11-09 09:33:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:33,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:33,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:33,122 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:33:33,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:33:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:33,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:33:33,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:33,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:33,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188673617] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:33:33,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:33:33,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-09 09:33:33,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258108081] [2021-11-09 09:33:33,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:33:33,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:33,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:33:33,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:33:33,808 INFO L87 Difference]: Start difference. First operand 1538 states and 2719 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:33,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:33,980 INFO L93 Difference]: Finished difference Result 2974 states and 5162 transitions. [2021-11-09 09:33:33,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:33:33,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-09 09:33:33,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:33,996 INFO L225 Difference]: With dead ends: 2974 [2021-11-09 09:33:33,997 INFO L226 Difference]: Without dead ends: 2389 [2021-11-09 09:33:33,999 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:33:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-09 09:33:34,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1801. [2021-11-09 09:33:34,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1797 states have (on average 1.7796327212020033) internal successors, (3198), 1800 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:34,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 3198 transitions. [2021-11-09 09:33:34,171 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 3198 transitions. Word has length 99 [2021-11-09 09:33:34,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:34,173 INFO L470 AbstractCegarLoop]: Abstraction has 1801 states and 3198 transitions. [2021-11-09 09:33:34,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:34,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 3198 transitions. [2021-11-09 09:33:34,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:33:34,178 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:34,178 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:34,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:33:34,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a53bdac-4794-4288-847a-ab2186f6e7f1/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:34,395 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:34,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:34,396 INFO L85 PathProgramCache]: Analyzing trace with hash 651210100, now seen corresponding path program 1 times [2021-11-09 09:33:34,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:34,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683396282] [2021-11-09 09:33:34,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:34,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:34,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:34,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:34,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683396282] [2021-11-09 09:33:34,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683396282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:34,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:34,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:33:34,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929496385] [2021-11-09 09:33:34,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:34,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:34,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:34,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:34,472 INFO L87 Difference]: Start difference. First operand 1801 states and 3198 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:34,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:34,662 INFO L93 Difference]: Finished difference Result 4990 states and 8879 transitions. [2021-11-09 09:33:34,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:34,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-09 09:33:34,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:34,683 INFO L225 Difference]: With dead ends: 4990 [2021-11-09 09:33:34,683 INFO L226 Difference]: Without dead ends: 3290 [2021-11-09 09:33:34,687 INFO L786 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 [2021-11-09 09:33:34,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2021-11-09 09:33:34,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 2705. [2021-11-09 09:33:34,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2701 states have (on average 1.7989633469085524) internal successors, (4859), 2704 states have internal predecessors, (4859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 4859 transitions. [2021-11-09 09:33:34,887 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 4859 transitions. Word has length 103 [2021-11-09 09:33:34,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:34,888 INFO L470 AbstractCegarLoop]: Abstraction has 2705 states and 4859 transitions. [2021-11-09 09:33:34,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:34,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 4859 transitions. [2021-11-09 09:33:34,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-09 09:33:34,894 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:34,894 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:34,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 09:33:34,895 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:34,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:34,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2069566732, now seen corresponding path program 1 times [2021-11-09 09:33:34,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:34,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844906515] [2021-11-09 09:33:34,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:34,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:34,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:34,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844906515] [2021-11-09 09:33:34,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844906515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:34,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:34,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:33:34,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268507605] [2021-11-09 09:33:34,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:34,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:34,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:34,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:34,965 INFO L87 Difference]: Start difference. First operand 2705 states and 4859 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:35,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:35,250 INFO L93 Difference]: Finished difference Result 7438 states and 13381 transitions. [2021-11-09 09:33:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:35,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-09 09:33:35,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:35,296 INFO L225 Difference]: With dead ends: 7438 [2021-11-09 09:33:35,297 INFO L226 Difference]: Without dead ends: 4868 [2021-11-09 09:33:35,303 INFO L786 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 [2021-11-09 09:33:35,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4868 states. [2021-11-09 09:33:35,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4283. [2021-11-09 09:33:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4283 states, 4279 states have (on average 1.8125730310820285) internal successors, (7756), 4282 states have internal predecessors, (7756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:35,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4283 states to 4283 states and 7756 transitions. [2021-11-09 09:33:35,681 INFO L78 Accepts]: Start accepts. Automaton has 4283 states and 7756 transitions. Word has length 104 [2021-11-09 09:33:35,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:35,681 INFO L470 AbstractCegarLoop]: Abstraction has 4283 states and 7756 transitions. [2021-11-09 09:33:35,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:35,682 INFO L276 IsEmpty]: Start isEmpty. Operand 4283 states and 7756 transitions. [2021-11-09 09:33:35,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-09 09:33:35,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:35,694 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:35,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 09:33:35,694 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:35,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:35,695 INFO L85 PathProgramCache]: Analyzing trace with hash -970878235, now seen corresponding path program 1 times [2021-11-09 09:33:35,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:35,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408202067] [2021-11-09 09:33:35,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:35,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:35,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:35,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:35,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408202067] [2021-11-09 09:33:35,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408202067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:35,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:35,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:33:35,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806637012] [2021-11-09 09:33:35,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:35,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:35,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:35,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:35,770 INFO L87 Difference]: Start difference. First operand 4283 states and 7756 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:36,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:36,215 INFO L93 Difference]: Finished difference Result 11888 states and 21555 transitions. [2021-11-09 09:33:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:36,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-11-09 09:33:36,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:36,238 INFO L225 Difference]: With dead ends: 11888 [2021-11-09 09:33:36,239 INFO L226 Difference]: Without dead ends: 7774 [2021-11-09 09:33:36,245 INFO L786 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 [2021-11-09 09:33:36,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7774 states. [2021-11-09 09:33:36,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7774 to 7189. [2021-11-09 09:33:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7189 states, 7185 states have (on average 1.8211551844119693) internal successors, (13085), 7188 states have internal predecessors, (13085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:36,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7189 states to 7189 states and 13085 transitions. [2021-11-09 09:33:36,742 INFO L78 Accepts]: Start accepts. Automaton has 7189 states and 13085 transitions. Word has length 105 [2021-11-09 09:33:36,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:36,742 INFO L470 AbstractCegarLoop]: Abstraction has 7189 states and 13085 transitions. [2021-11-09 09:33:36,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:36,743 INFO L276 IsEmpty]: Start isEmpty. Operand 7189 states and 13085 transitions. [2021-11-09 09:33:36,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-09 09:33:36,760 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:36,760 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:36,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 09:33:36,760 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:36,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:36,761 INFO L85 PathProgramCache]: Analyzing trace with hash 510707525, now seen corresponding path program 1 times [2021-11-09 09:33:36,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:36,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805067548] [2021-11-09 09:33:36,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:36,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:36,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:36,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805067548] [2021-11-09 09:33:36,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805067548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:36,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:36,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:33:36,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016195902] [2021-11-09 09:33:36,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:36,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:36,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:36,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:36,842 INFO L87 Difference]: Start difference. First operand 7189 states and 13085 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:37,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:37,544 INFO L93 Difference]: Finished difference Result 20932 states and 38153 transitions. [2021-11-09 09:33:37,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:37,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-09 09:33:37,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:37,589 INFO L225 Difference]: With dead ends: 20932 [2021-11-09 09:33:37,589 INFO L226 Difference]: Without dead ends: 13920 [2021-11-09 09:33:37,603 INFO L786 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 [2021-11-09 09:33:37,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13920 states. [2021-11-09 09:33:38,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13920 to 13335. [2021-11-09 09:33:38,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13335 states, 13331 states have (on average 1.8265696496886956) internal successors, (24350), 13334 states have internal predecessors, (24350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:38,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13335 states to 13335 states and 24350 transitions. [2021-11-09 09:33:38,551 INFO L78 Accepts]: Start accepts. Automaton has 13335 states and 24350 transitions. Word has length 106 [2021-11-09 09:33:38,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:38,551 INFO L470 AbstractCegarLoop]: Abstraction has 13335 states and 24350 transitions. [2021-11-09 09:33:38,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:38,552 INFO L276 IsEmpty]: Start isEmpty. Operand 13335 states and 24350 transitions. [2021-11-09 09:33:38,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-09 09:33:38,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:38,585 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:38,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 09:33:38,585 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:38,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:38,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1330919060, now seen corresponding path program 1 times [2021-11-09 09:33:38,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:38,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364350398] [2021-11-09 09:33:38,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:38,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:38,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:38,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364350398] [2021-11-09 09:33:38,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364350398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:38,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:38,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:33:38,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596282165] [2021-11-09 09:33:38,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:38,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:38,665 INFO L87 Difference]: Start difference. First operand 13335 states and 24350 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:39,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:39,872 INFO L93 Difference]: Finished difference Result 39200 states and 71647 transitions. [2021-11-09 09:33:39,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:39,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2021-11-09 09:33:39,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:39,957 INFO L225 Difference]: With dead ends: 39200 [2021-11-09 09:33:39,957 INFO L226 Difference]: Without dead ends: 26050 [2021-11-09 09:33:39,977 INFO L786 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 [2021-11-09 09:33:40,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26050 states. [2021-11-09 09:33:41,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26050 to 25465. [2021-11-09 09:33:41,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25465 states, 25461 states have (on average 1.8286398806017046) internal successors, (46559), 25464 states have internal predecessors, (46559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:41,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25465 states to 25465 states and 46559 transitions. [2021-11-09 09:33:41,246 INFO L78 Accepts]: Start accepts. Automaton has 25465 states and 46559 transitions. Word has length 107 [2021-11-09 09:33:41,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:41,246 INFO L470 AbstractCegarLoop]: Abstraction has 25465 states and 46559 transitions. [2021-11-09 09:33:41,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:41,247 INFO L276 IsEmpty]: Start isEmpty. Operand 25465 states and 46559 transitions. [2021-11-09 09:33:41,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-09 09:33:41,294 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:41,295 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:41,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 09:33:41,295 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:41,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:41,296 INFO L85 PathProgramCache]: Analyzing trace with hash -25568940, now seen corresponding path program 1 times [2021-11-09 09:33:41,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:41,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910552094] [2021-11-09 09:33:41,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:41,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:41,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:41,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910552094] [2021-11-09 09:33:41,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910552094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:41,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:41,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:33:41,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070384292] [2021-11-09 09:33:41,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:41,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:41,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:41,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:41,371 INFO L87 Difference]: Start difference. First operand 25465 states and 46559 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:43,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:43,352 INFO L93 Difference]: Finished difference Result 70229 states and 128010 transitions. [2021-11-09 09:33:43,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:43,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-09 09:33:43,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:43,502 INFO L225 Difference]: With dead ends: 70229 [2021-11-09 09:33:43,502 INFO L226 Difference]: Without dead ends: 44996 [2021-11-09 09:33:43,542 INFO L786 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 [2021-11-09 09:33:43,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44996 states. [2021-11-09 09:33:45,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44996 to 44411. [2021-11-09 09:33:45,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44411 states, 44407 states have (on average 1.8180917422928817) internal successors, (80736), 44410 states have internal predecessors, (80736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44411 states to 44411 states and 80736 transitions. [2021-11-09 09:33:45,783 INFO L78 Accepts]: Start accepts. Automaton has 44411 states and 80736 transitions. Word has length 108 [2021-11-09 09:33:45,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:45,784 INFO L470 AbstractCegarLoop]: Abstraction has 44411 states and 80736 transitions. [2021-11-09 09:33:45,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:45,784 INFO L276 IsEmpty]: Start isEmpty. Operand 44411 states and 80736 transitions. [2021-11-09 09:33:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-09 09:33:45,879 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:45,879 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:45,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 09:33:45,880 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:45,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:45,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1063515323, now seen corresponding path program 1 times [2021-11-09 09:33:45,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:45,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742296732] [2021-11-09 09:33:45,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:45,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:45,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 09:33:45,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:45,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742296732] [2021-11-09 09:33:45,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742296732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:45,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:45,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:33:45,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615781784] [2021-11-09 09:33:45,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:33:45,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:45,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:33:45,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:33:45,983 INFO L87 Difference]: Start difference. First operand 44411 states and 80736 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:49,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:49,402 INFO L93 Difference]: Finished difference Result 130842 states and 237843 transitions. [2021-11-09 09:33:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:33:49,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 109 [2021-11-09 09:33:49,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:49,604 INFO L225 Difference]: With dead ends: 130842 [2021-11-09 09:33:49,605 INFO L226 Difference]: Without dead ends: 86731 [2021-11-09 09:33:49,649 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:33:49,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86731 states. [2021-11-09 09:33:51,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86731 to 44411. [2021-11-09 09:33:51,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44411 states, 44407 states have (on average 1.8122818474564821) internal successors, (80478), 44410 states have internal predecessors, (80478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:52,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44411 states to 44411 states and 80478 transitions. [2021-11-09 09:33:52,073 INFO L78 Accepts]: Start accepts. Automaton has 44411 states and 80478 transitions. Word has length 109 [2021-11-09 09:33:52,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:52,074 INFO L470 AbstractCegarLoop]: Abstraction has 44411 states and 80478 transitions. [2021-11-09 09:33:52,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:52,074 INFO L276 IsEmpty]: Start isEmpty. Operand 44411 states and 80478 transitions. [2021-11-09 09:33:52,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-09 09:33:52,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:52,110 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:52,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 09:33:52,110 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:52,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:52,111 INFO L85 PathProgramCache]: Analyzing trace with hash -902143271, now seen corresponding path program 2 times [2021-11-09 09:33:52,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:52,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119231381] [2021-11-09 09:33:52,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:52,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:52,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:52,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119231381] [2021-11-09 09:33:52,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119231381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:52,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:52,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:33:52,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26260503] [2021-11-09 09:33:52,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:33:52,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:52,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:33:52,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:33:52,202 INFO L87 Difference]: Start difference. First operand 44411 states and 80478 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:54,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:54,102 INFO L93 Difference]: Finished difference Result 89101 states and 161412 transitions. [2021-11-09 09:33:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:33:54,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-09 09:33:54,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:54,199 INFO L225 Difference]: With dead ends: 89101 [2021-11-09 09:33:54,199 INFO L226 Difference]: Without dead ends: 44996 [2021-11-09 09:33:54,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:33:54,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44996 states. [2021-11-09 09:33:56,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44996 to 44411. [2021-11-09 09:33:56,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44411 states, 44407 states have (on average 1.8093994190105163) internal successors, (80350), 44410 states have internal predecessors, (80350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44411 states to 44411 states and 80350 transitions. [2021-11-09 09:33:56,160 INFO L78 Accepts]: Start accepts. Automaton has 44411 states and 80350 transitions. Word has length 109 [2021-11-09 09:33:56,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:56,161 INFO L470 AbstractCegarLoop]: Abstraction has 44411 states and 80350 transitions. [2021-11-09 09:33:56,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:56,161 INFO L276 IsEmpty]: Start isEmpty. Operand 44411 states and 80350 transitions. [2021-11-09 09:33:56,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-09 09:33:56,200 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:56,200 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:56,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 09:33:56,201 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:33:56,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:56,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1286714374, now seen corresponding path program 1 times [2021-11-09 09:33:56,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:56,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132624397] [2021-11-09 09:33:56,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:56,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:56,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:56,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:56,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132624397] [2021-11-09 09:33:56,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132624397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:56,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:56,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:33:56,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409912089] [2021-11-09 09:33:56,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:56,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:56,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:56,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:56,273 INFO L87 Difference]: Start difference. First operand 44411 states and 80350 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:59,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:59,235 INFO L93 Difference]: Finished difference Result 124727 states and 225486 transitions. [2021-11-09 09:33:59,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:59,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-09 09:33:59,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:59,395 INFO L225 Difference]: With dead ends: 124727 [2021-11-09 09:33:59,395 INFO L226 Difference]: Without dead ends: 80582 [2021-11-09 09:33:59,430 INFO L786 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 [2021-11-09 09:33:59,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80582 states. [2021-11-09 09:34:02,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80582 to 79997. [2021-11-09 09:34:02,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79997 states, 79993 states have (on average 1.8045453977223007) internal successors, (144351), 79996 states have internal predecessors, (144351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:03,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79997 states to 79997 states and 144351 transitions. [2021-11-09 09:34:03,002 INFO L78 Accepts]: Start accepts. Automaton has 79997 states and 144351 transitions. Word has length 109 [2021-11-09 09:34:03,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:03,003 INFO L470 AbstractCegarLoop]: Abstraction has 79997 states and 144351 transitions. [2021-11-09 09:34:03,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:03,003 INFO L276 IsEmpty]: Start isEmpty. Operand 79997 states and 144351 transitions. [2021-11-09 09:34:03,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-09 09:34:03,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:03,075 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:03,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-09 09:34:03,075 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:03,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:03,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2137686241, now seen corresponding path program 1 times [2021-11-09 09:34:03,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:03,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351016612] [2021-11-09 09:34:03,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:03,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 09:34:03,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:03,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351016612] [2021-11-09 09:34:03,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351016612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:03,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:03,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:34:03,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344912141] [2021-11-09 09:34:03,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:34:03,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:03,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:34:03,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:34:03,204 INFO L87 Difference]: Start difference. First operand 79997 states and 144351 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:11,347 INFO L93 Difference]: Finished difference Result 163970 states and 295277 transitions. [2021-11-09 09:34:11,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 09:34:11,348 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 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 110 [2021-11-09 09:34:11,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:11,716 INFO L225 Difference]: With dead ends: 163970 [2021-11-09 09:34:11,717 INFO L226 Difference]: Without dead ends: 163442 [2021-11-09 09:34:11,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=438, Unknown=0, NotChecked=0, Total=650 [2021-11-09 09:34:11,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163442 states. [2021-11-09 09:34:18,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163442 to 160185. [2021-11-09 09:34:18,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160185 states, 160181 states have (on average 1.8043713049612626) internal successors, (289026), 160184 states have internal predecessors, (289026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160185 states to 160185 states and 289026 transitions. [2021-11-09 09:34:18,955 INFO L78 Accepts]: Start accepts. Automaton has 160185 states and 289026 transitions. Word has length 110 [2021-11-09 09:34:18,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:18,955 INFO L470 AbstractCegarLoop]: Abstraction has 160185 states and 289026 transitions. [2021-11-09 09:34:18,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:18,956 INFO L276 IsEmpty]: Start isEmpty. Operand 160185 states and 289026 transitions. [2021-11-09 09:34:19,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-09 09:34:19,036 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:19,036 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:19,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-09 09:34:19,037 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:19,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:19,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1218206741, now seen corresponding path program 1 times [2021-11-09 09:34:19,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:19,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188539954] [2021-11-09 09:34:19,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:19,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 09:34:19,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:19,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188539954] [2021-11-09 09:34:19,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188539954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:19,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:19,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:34:19,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804105383] [2021-11-09 09:34:19,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:34:19,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:19,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:34:19,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:34:19,118 INFO L87 Difference]: Start difference. First operand 160185 states and 289026 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)