./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_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_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/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_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/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_7f1cd715-f3ca-4657-98ea-e6431006d492/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 5be9e48e11f5f92f9ccb04262780ea6fa0bae40b757b81b8e52fca7547f54831 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:41:31,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:41:31,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:41:31,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:41:31,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:41:31,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:41:31,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:41:31,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:41:31,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:41:31,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:41:31,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:41:31,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:41:31,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:41:31,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:41:31,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:41:31,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:41:31,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:41:31,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:41:31,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:41:31,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:41:31,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:41:31,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:41:31,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:41:31,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:41:31,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:41:31,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:41:31,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:41:31,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:41:31,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:41:31,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:41:31,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:41:31,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:41:31,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:41:31,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:41:31,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:41:31,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:41:31,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:41:31,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:41:31,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:41:31,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:41:31,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:41:31,857 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:41:31,907 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:41:31,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:41:31,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:41:31,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:41:31,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:41:31,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:41:31,911 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:41:31,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:41:31,911 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:41:31,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:41:31,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:41:31,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:41:31,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:41:31,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:41:31,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:41:31,914 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:41:31,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:41:31,914 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:41:31,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:41:31,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:41:31,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:41:31,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:41:31,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:41:31,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:41:31,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:41:31,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:41:31,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:41:31,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:41:31,917 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:41:31,918 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:41:31,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:41:31,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:41:31,919 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_7f1cd715-f3ca-4657-98ea-e6431006d492/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5be9e48e11f5f92f9ccb04262780ea6fa0bae40b757b81b8e52fca7547f54831 [2021-11-09 08:41:32,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:41:32,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:41:32,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:41:32,275 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:41:32,276 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:41:32,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/product-lines/email_spec8_product26.cil.c [2021-11-09 08:41:32,385 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/data/afc7e9c5e/fe0d5eb761034175add818d26bcf1cfe/FLAGf496b9957 [2021-11-09 08:41:33,222 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:41:33,224 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/sv-benchmarks/c/product-lines/email_spec8_product26.cil.c [2021-11-09 08:41:33,249 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/data/afc7e9c5e/fe0d5eb761034175add818d26bcf1cfe/FLAGf496b9957 [2021-11-09 08:41:33,348 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/data/afc7e9c5e/fe0d5eb761034175add818d26bcf1cfe [2021-11-09 08:41:33,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:41:33,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:41:33,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:41:33,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:41:33,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:41:33,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:41:33" (1/1) ... [2021-11-09 08:41:33,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@790a0a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:33, skipping insertion in model container [2021-11-09 08:41:33,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:41:33" (1/1) ... [2021-11-09 08:41:33,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:41:33,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:41:33,934 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_7f1cd715-f3ca-4657-98ea-e6431006d492/sv-benchmarks/c/product-lines/email_spec8_product26.cil.c[14808,14821] [2021-11-09 08:41:34,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:41:34,168 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:41:34,216 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_7f1cd715-f3ca-4657-98ea-e6431006d492/sv-benchmarks/c/product-lines/email_spec8_product26.cil.c[14808,14821] [2021-11-09 08:41:34,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:41:34,387 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:41:34,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:34 WrapperNode [2021-11-09 08:41:34,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:41:34,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:41:34,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:41:34,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:41:34,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:34" (1/1) ... [2021-11-09 08:41:34,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:34" (1/1) ... [2021-11-09 08:41:34,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:41:34,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:41:34,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:41:34,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:41:34,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:34" (1/1) ... [2021-11-09 08:41:34,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:34" (1/1) ... [2021-11-09 08:41:34,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:34" (1/1) ... [2021-11-09 08:41:34,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:34" (1/1) ... [2021-11-09 08:41:34,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:34" (1/1) ... [2021-11-09 08:41:34,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:34" (1/1) ... [2021-11-09 08:41:34,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:34" (1/1) ... [2021-11-09 08:41:34,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:41:34,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:41:34,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:41:34,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:41:34,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:34" (1/1) ... [2021-11-09 08:41:34,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:41:34,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:41:34,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:41:34,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:41:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-09 08:41:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:41:34,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:41:34,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:41:34,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:41:38,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:41:38,625 INFO L299 CfgBuilder]: Removed 725 assume(true) statements. [2021-11-09 08:41:38,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:41:38 BoogieIcfgContainer [2021-11-09 08:41:38,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:41:38,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:41:38,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:41:38,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:41:38,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:41:33" (1/3) ... [2021-11-09 08:41:38,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6660b097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:41:38, skipping insertion in model container [2021-11-09 08:41:38,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:34" (2/3) ... [2021-11-09 08:41:38,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6660b097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:41:38, skipping insertion in model container [2021-11-09 08:41:38,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:41:38" (3/3) ... [2021-11-09 08:41:38,639 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product26.cil.c [2021-11-09 08:41:38,649 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:41:38,649 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-09 08:41:38,709 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:41:38,717 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 08:41:38,718 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-09 08:41:38,763 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 08:41:38,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-09 08:41:38,778 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:38,779 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 08:41:38,780 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 08:41:38,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:38,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1931887788, now seen corresponding path program 1 times [2021-11-09 08:41:38,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:38,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57148970] [2021-11-09 08:41:38,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:38,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:39,272 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 08:41:39,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:39,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57148970] [2021-11-09 08:41:39,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57148970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:39,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:39,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:41:39,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817223207] [2021-11-09 08:41:39,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:41:39,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:39,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:41:39,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:41:39,303 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 08:41:39,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:39,609 INFO L93 Difference]: Finished difference Result 3079 states and 5291 transitions. [2021-11-09 08:41:39,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:41:39,612 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 08:41:39,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:39,653 INFO L225 Difference]: With dead ends: 3079 [2021-11-09 08:41:39,654 INFO L226 Difference]: Without dead ends: 1752 [2021-11-09 08:41:39,662 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 08:41:39,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2021-11-09 08:41:39,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 885. [2021-11-09 08:41:39,785 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 08:41:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1520 transitions. [2021-11-09 08:41:39,791 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1520 transitions. Word has length 44 [2021-11-09 08:41:39,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:39,792 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1520 transitions. [2021-11-09 08:41:39,792 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 08:41:39,792 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1520 transitions. [2021-11-09 08:41:39,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-09 08:41:39,797 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:39,797 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 08:41:39,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:41:39,798 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 08:41:39,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:39,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1357793597, now seen corresponding path program 1 times [2021-11-09 08:41:39,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:39,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102144041] [2021-11-09 08:41:39,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:39,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:39,964 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 08:41:39,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:39,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102144041] [2021-11-09 08:41:39,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102144041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:39,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:39,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:41:39,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113361270] [2021-11-09 08:41:39,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:41:39,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:39,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:41:39,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:41:39,973 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 08:41:40,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:40,245 INFO L93 Difference]: Finished difference Result 2604 states and 4476 transitions. [2021-11-09 08:41:40,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:41:40,246 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 08:41:40,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:40,261 INFO L225 Difference]: With dead ends: 2604 [2021-11-09 08:41:40,262 INFO L226 Difference]: Without dead ends: 1738 [2021-11-09 08:41:40,265 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 08:41:40,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2021-11-09 08:41:40,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 885. [2021-11-09 08:41:40,317 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 08:41:40,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1519 transitions. [2021-11-09 08:41:40,322 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1519 transitions. Word has length 46 [2021-11-09 08:41:40,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:40,323 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1519 transitions. [2021-11-09 08:41:40,323 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 08:41:40,323 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1519 transitions. [2021-11-09 08:41:40,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-09 08:41:40,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:40,326 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 08:41:40,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:41:40,327 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 08:41:40,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:40,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1466918346, now seen corresponding path program 1 times [2021-11-09 08:41:40,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:40,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063250456] [2021-11-09 08:41:40,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:40,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:40,513 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 08:41:40,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:40,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063250456] [2021-11-09 08:41:40,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063250456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:40,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:40,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:41:40,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802868035] [2021-11-09 08:41:40,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:41:40,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:40,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:41:40,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:41:40,518 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 08:41:40,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:40,592 INFO L93 Difference]: Finished difference Result 1752 states and 3012 transitions. [2021-11-09 08:41:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:41:40,593 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 08:41:40,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:40,601 INFO L225 Difference]: With dead ends: 1752 [2021-11-09 08:41:40,601 INFO L226 Difference]: Without dead ends: 890 [2021-11-09 08:41:40,603 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 08:41:40,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-11-09 08:41:40,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 885. [2021-11-09 08:41:40,649 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 08:41:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1516 transitions. [2021-11-09 08:41:40,654 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1516 transitions. Word has length 47 [2021-11-09 08:41:40,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:40,655 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1516 transitions. [2021-11-09 08:41:40,655 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 08:41:40,656 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1516 transitions. [2021-11-09 08:41:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-09 08:41:40,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:40,658 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 08:41:40,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:41:40,659 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 08:41:40,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:40,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1328180709, now seen corresponding path program 1 times [2021-11-09 08:41:40,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:40,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604565902] [2021-11-09 08:41:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:40,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:40,773 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 08:41:40,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:40,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604565902] [2021-11-09 08:41:40,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604565902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:40,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:40,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:41:40,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640354751] [2021-11-09 08:41:40,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:41:40,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:40,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:41:40,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:41:40,777 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 08:41:41,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:41,014 INFO L93 Difference]: Finished difference Result 2594 states and 4456 transitions. [2021-11-09 08:41:41,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:41:41,015 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 08:41:41,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:41,027 INFO L225 Difference]: With dead ends: 2594 [2021-11-09 08:41:41,028 INFO L226 Difference]: Without dead ends: 1736 [2021-11-09 08:41:41,030 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 08:41:41,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2021-11-09 08:41:41,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 885. [2021-11-09 08:41:41,084 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 08:41:41,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1515 transitions. [2021-11-09 08:41:41,089 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1515 transitions. Word has length 49 [2021-11-09 08:41:41,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:41,089 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1515 transitions. [2021-11-09 08:41:41,089 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 08:41:41,090 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1515 transitions. [2021-11-09 08:41:41,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 08:41:41,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:41,091 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 08:41:41,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:41:41,092 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 08:41:41,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:41,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1541028168, now seen corresponding path program 1 times [2021-11-09 08:41:41,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:41,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324094631] [2021-11-09 08:41:41,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:41,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:41,205 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 08:41:41,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:41,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324094631] [2021-11-09 08:41:41,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324094631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:41,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:41,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:41:41,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292429954] [2021-11-09 08:41:41,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:41:41,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:41,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:41:41,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:41:41,212 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 08:41:41,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:41,467 INFO L93 Difference]: Finished difference Result 2599 states and 4460 transitions. [2021-11-09 08:41:41,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:41:41,468 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 08:41:41,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:41,480 INFO L225 Difference]: With dead ends: 2599 [2021-11-09 08:41:41,480 INFO L226 Difference]: Without dead ends: 1741 [2021-11-09 08:41:41,483 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 08:41:41,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2021-11-09 08:41:41,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 885. [2021-11-09 08:41:41,546 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 08:41:41,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1514 transitions. [2021-11-09 08:41:41,551 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1514 transitions. Word has length 50 [2021-11-09 08:41:41,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:41,552 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1514 transitions. [2021-11-09 08:41:41,552 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 08:41:41,552 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1514 transitions. [2021-11-09 08:41:41,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-09 08:41:41,554 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:41,554 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, 1, 1, 1, 1, 1] [2021-11-09 08:41:41,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:41:41,555 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 08:41:41,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:41,556 INFO L85 PathProgramCache]: Analyzing trace with hash -394054560, now seen corresponding path program 1 times [2021-11-09 08:41:41,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:41,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946350137] [2021-11-09 08:41:41,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:41,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:41,639 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 08:41:41,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:41,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946350137] [2021-11-09 08:41:41,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946350137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:41,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:41,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:41:41,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301625475] [2021-11-09 08:41:41,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:41:41,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:41,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:41:41,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:41:41,643 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 08:41:41,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:41,737 INFO L93 Difference]: Finished difference Result 1485 states and 2515 transitions. [2021-11-09 08:41:41,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:41:41,738 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 08:41:41,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:41,752 INFO L225 Difference]: With dead ends: 1485 [2021-11-09 08:41:41,753 INFO L226 Difference]: Without dead ends: 888 [2021-11-09 08:41:41,754 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 08:41:41,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-11-09 08:41:41,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 887. [2021-11-09 08:41:41,811 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 08:41:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1516 transitions. [2021-11-09 08:41:41,816 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1516 transitions. Word has length 51 [2021-11-09 08:41:41,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:41,816 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1516 transitions. [2021-11-09 08:41:41,817 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 08:41:41,817 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1516 transitions. [2021-11-09 08:41:41,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-09 08:41:41,818 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:41,819 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 08:41:41,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:41:41,819 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 08:41:41,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:41,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1512460722, now seen corresponding path program 1 times [2021-11-09 08:41:41,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:41,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333262615] [2021-11-09 08:41:41,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:41,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:41,934 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 08:41:41,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:41,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333262615] [2021-11-09 08:41:41,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333262615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:41,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:41,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:41:41,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501287599] [2021-11-09 08:41:41,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:41:41,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:41,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:41:41,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:41:41,937 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 08:41:42,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:42,073 INFO L93 Difference]: Finished difference Result 2547 states and 4372 transitions. [2021-11-09 08:41:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:41:42,074 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 08:41:42,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:42,084 INFO L225 Difference]: With dead ends: 2547 [2021-11-09 08:41:42,084 INFO L226 Difference]: Without dead ends: 1691 [2021-11-09 08:41:42,087 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 08:41:42,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2021-11-09 08:41:42,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1094. [2021-11-09 08:41:42,155 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 08:41:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1898 transitions. [2021-11-09 08:41:42,161 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1898 transitions. Word has length 59 [2021-11-09 08:41:42,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:42,161 INFO L470 AbstractCegarLoop]: Abstraction has 1094 states and 1898 transitions. [2021-11-09 08:41:42,162 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 08:41:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1898 transitions. [2021-11-09 08:41:42,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-09 08:41:42,164 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:42,164 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 08:41:42,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:41:42,165 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 08:41:42,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:42,165 INFO L85 PathProgramCache]: Analyzing trace with hash 592220589, now seen corresponding path program 1 times [2021-11-09 08:41:42,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:42,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68393884] [2021-11-09 08:41:42,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:42,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:42,256 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 08:41:42,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:42,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68393884] [2021-11-09 08:41:42,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68393884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:42,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:42,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:41:42,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516975815] [2021-11-09 08:41:42,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:41:42,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:42,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:41:42,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:41:42,260 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 08:41:42,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:42,729 INFO L93 Difference]: Finished difference Result 3212 states and 5600 transitions. [2021-11-09 08:41:42,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:41:42,730 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 08:41:42,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:42,746 INFO L225 Difference]: With dead ends: 3212 [2021-11-09 08:41:42,746 INFO L226 Difference]: Without dead ends: 2149 [2021-11-09 08:41:42,749 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 08:41:42,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2021-11-09 08:41:42,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1094. [2021-11-09 08:41:42,864 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 08:41:42,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1896 transitions. [2021-11-09 08:41:42,869 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1896 transitions. Word has length 60 [2021-11-09 08:41:42,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:42,870 INFO L470 AbstractCegarLoop]: Abstraction has 1094 states and 1896 transitions. [2021-11-09 08:41:42,870 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 08:41:42,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1896 transitions. [2021-11-09 08:41:42,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 08:41:42,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:42,873 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 08:41:42,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:41:42,873 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 08:41:42,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash 447893252, now seen corresponding path program 1 times [2021-11-09 08:41:42,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:42,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133323787] [2021-11-09 08:41:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:42,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:42,943 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 08:41:42,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:42,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133323787] [2021-11-09 08:41:42,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133323787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:42,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:42,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:41:42,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8497428] [2021-11-09 08:41:42,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:41:42,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:42,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:41:42,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:41:42,947 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 08:41:43,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:43,144 INFO L93 Difference]: Finished difference Result 3210 states and 5592 transitions. [2021-11-09 08:41:43,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:41:43,145 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 08:41:43,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:43,161 INFO L225 Difference]: With dead ends: 3210 [2021-11-09 08:41:43,162 INFO L226 Difference]: Without dead ends: 2147 [2021-11-09 08:41:43,165 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 08:41:43,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2021-11-09 08:41:43,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 1550. [2021-11-09 08:41:43,290 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 08:41:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 2737 transitions. [2021-11-09 08:41:43,297 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 2737 transitions. Word has length 61 [2021-11-09 08:41:43,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:43,297 INFO L470 AbstractCegarLoop]: Abstraction has 1550 states and 2737 transitions. [2021-11-09 08:41:43,298 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 08:41:43,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 2737 transitions. [2021-11-09 08:41:43,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 08:41:43,300 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:43,301 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 08:41:43,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:41:43,301 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 08:41:43,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:43,302 INFO L85 PathProgramCache]: Analyzing trace with hash 120529826, now seen corresponding path program 1 times [2021-11-09 08:41:43,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:43,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110010640] [2021-11-09 08:41:43,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:43,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:43,381 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 08:41:43,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:43,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110010640] [2021-11-09 08:41:43,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110010640] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:41:43,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201479840] [2021-11-09 08:41:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:43,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:41:43,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:41:43,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:41:43,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 08:41:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:43,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:41:43,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:41:43,952 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 08:41:43,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201479840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:43,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:41:43,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-09 08:41:43,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502341195] [2021-11-09 08:41:43,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:41:43,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:43,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:41:43,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:41:43,956 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 08:41:44,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:44,077 INFO L93 Difference]: Finished difference Result 2060 states and 3583 transitions. [2021-11-09 08:41:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:41:44,078 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 08:41:44,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:44,090 INFO L225 Difference]: With dead ends: 2060 [2021-11-09 08:41:44,090 INFO L226 Difference]: Without dead ends: 1552 [2021-11-09 08:41:44,092 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 08:41:44,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2021-11-09 08:41:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1538. [2021-11-09 08:41:44,227 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 08:41:44,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2719 transitions. [2021-11-09 08:41:44,235 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2719 transitions. Word has length 61 [2021-11-09 08:41:44,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:44,235 INFO L470 AbstractCegarLoop]: Abstraction has 1538 states and 2719 transitions. [2021-11-09 08:41:44,236 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 08:41:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2719 transitions. [2021-11-09 08:41:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-09 08:41:44,240 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:44,241 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 08:41:44,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:41:44,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 08:41:44,456 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 08:41:44,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:44,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1968095127, now seen corresponding path program 1 times [2021-11-09 08:41:44,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:44,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575095468] [2021-11-09 08:41:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:44,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:44,555 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 08:41:44,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:44,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575095468] [2021-11-09 08:41:44,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575095468] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:41:44,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721192621] [2021-11-09 08:41:44,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:44,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:41:44,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:41:44,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:41:44,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 08:41:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:44,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:41:45,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:41:45,351 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 08:41:45,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721192621] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:41:45,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:41:45,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-09 08:41:45,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059840447] [2021-11-09 08:41:45,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:41:45,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:45,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:41:45,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:41:45,354 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 08:41:45,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:45,675 INFO L93 Difference]: Finished difference Result 2974 states and 5162 transitions. [2021-11-09 08:41:45,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:41:45,676 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 08:41:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:45,708 INFO L225 Difference]: With dead ends: 2974 [2021-11-09 08:41:45,714 INFO L226 Difference]: Without dead ends: 2389 [2021-11-09 08:41:45,717 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 08:41:45,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-09 08:41:45,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1801. [2021-11-09 08:41:45,894 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 08:41:45,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 3198 transitions. [2021-11-09 08:41:45,901 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 3198 transitions. Word has length 99 [2021-11-09 08:41:45,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:45,902 INFO L470 AbstractCegarLoop]: Abstraction has 1801 states and 3198 transitions. [2021-11-09 08:41:45,902 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 08:41:45,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 3198 transitions. [2021-11-09 08:41:45,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 08:41:45,907 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:45,908 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 08:41:45,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:41:46,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f1cd715-f3ca-4657-98ea-e6431006d492/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:41:46,131 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 08:41:46,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:46,134 INFO L85 PathProgramCache]: Analyzing trace with hash 651210100, now seen corresponding path program 1 times [2021-11-09 08:41:46,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:46,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002519621] [2021-11-09 08:41:46,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:46,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:46,227 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 08:41:46,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:46,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002519621] [2021-11-09 08:41:46,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002519621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:46,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:46,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:41:46,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613989299] [2021-11-09 08:41:46,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:41:46,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:46,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:41:46,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:41:46,230 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 08:41:46,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:46,410 INFO L93 Difference]: Finished difference Result 4990 states and 8879 transitions. [2021-11-09 08:41:46,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:41:46,411 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 08:41:46,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:46,434 INFO L225 Difference]: With dead ends: 4990 [2021-11-09 08:41:46,434 INFO L226 Difference]: Without dead ends: 3290 [2021-11-09 08:41:46,438 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 08:41:46,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2021-11-09 08:41:46,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 2705. [2021-11-09 08:41:46,667 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 08:41:46,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 4859 transitions. [2021-11-09 08:41:46,678 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 4859 transitions. Word has length 103 [2021-11-09 08:41:46,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:46,679 INFO L470 AbstractCegarLoop]: Abstraction has 2705 states and 4859 transitions. [2021-11-09 08:41:46,679 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 08:41:46,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 4859 transitions. [2021-11-09 08:41:46,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-09 08:41:46,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:46,687 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 08:41:46,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 08:41:46,688 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 08:41:46,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:46,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2069566732, now seen corresponding path program 1 times [2021-11-09 08:41:46,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:46,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616227761] [2021-11-09 08:41:46,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:46,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:46,769 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 08:41:46,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:46,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616227761] [2021-11-09 08:41:46,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616227761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:46,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:46,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:41:46,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475773760] [2021-11-09 08:41:46,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:41:46,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:46,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:41:46,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:41:46,773 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 08:41:47,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:47,056 INFO L93 Difference]: Finished difference Result 7438 states and 13381 transitions. [2021-11-09 08:41:47,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:41:47,056 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 08:41:47,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:47,088 INFO L225 Difference]: With dead ends: 7438 [2021-11-09 08:41:47,088 INFO L226 Difference]: Without dead ends: 4868 [2021-11-09 08:41:47,094 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 08:41:47,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4868 states. [2021-11-09 08:41:47,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4283. [2021-11-09 08:41:47,410 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 08:41:47,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4283 states to 4283 states and 7756 transitions. [2021-11-09 08:41:47,425 INFO L78 Accepts]: Start accepts. Automaton has 4283 states and 7756 transitions. Word has length 104 [2021-11-09 08:41:47,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:47,426 INFO L470 AbstractCegarLoop]: Abstraction has 4283 states and 7756 transitions. [2021-11-09 08:41:47,426 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 08:41:47,426 INFO L276 IsEmpty]: Start isEmpty. Operand 4283 states and 7756 transitions. [2021-11-09 08:41:47,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-09 08:41:47,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:47,439 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 08:41:47,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 08:41:47,439 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 08:41:47,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:47,440 INFO L85 PathProgramCache]: Analyzing trace with hash -970878235, now seen corresponding path program 1 times [2021-11-09 08:41:47,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:47,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068227240] [2021-11-09 08:41:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:47,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:47,514 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 08:41:47,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:47,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068227240] [2021-11-09 08:41:47,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068227240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:47,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:47,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:41:47,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648847201] [2021-11-09 08:41:47,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:41:47,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:47,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:41:47,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:41:47,517 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 08:41:47,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:47,976 INFO L93 Difference]: Finished difference Result 11888 states and 21555 transitions. [2021-11-09 08:41:47,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:41:47,977 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 08:41:47,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:48,008 INFO L225 Difference]: With dead ends: 11888 [2021-11-09 08:41:48,008 INFO L226 Difference]: Without dead ends: 7774 [2021-11-09 08:41:48,016 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 08:41:48,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7774 states. [2021-11-09 08:41:48,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7774 to 7189. [2021-11-09 08:41:48,467 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 08:41:48,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7189 states to 7189 states and 13085 transitions. [2021-11-09 08:41:48,491 INFO L78 Accepts]: Start accepts. Automaton has 7189 states and 13085 transitions. Word has length 105 [2021-11-09 08:41:48,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:48,491 INFO L470 AbstractCegarLoop]: Abstraction has 7189 states and 13085 transitions. [2021-11-09 08:41:48,492 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 08:41:48,493 INFO L276 IsEmpty]: Start isEmpty. Operand 7189 states and 13085 transitions. [2021-11-09 08:41:48,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-09 08:41:48,515 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:48,516 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 08:41:48,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 08:41:48,516 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 08:41:48,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:48,517 INFO L85 PathProgramCache]: Analyzing trace with hash 510707525, now seen corresponding path program 1 times [2021-11-09 08:41:48,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:48,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870338872] [2021-11-09 08:41:48,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:48,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:48,654 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 08:41:48,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:48,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870338872] [2021-11-09 08:41:48,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870338872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:48,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:48,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:41:48,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596139838] [2021-11-09 08:41:48,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:41:48,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:48,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:41:48,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:41:48,660 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 08:41:49,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:49,478 INFO L93 Difference]: Finished difference Result 20932 states and 38153 transitions. [2021-11-09 08:41:49,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:41:49,479 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 08:41:49,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:49,533 INFO L225 Difference]: With dead ends: 20932 [2021-11-09 08:41:49,534 INFO L226 Difference]: Without dead ends: 13920 [2021-11-09 08:41:49,551 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 08:41:49,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13920 states. [2021-11-09 08:41:50,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13920 to 13335. [2021-11-09 08:41:50,406 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 08:41:50,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13335 states to 13335 states and 24350 transitions. [2021-11-09 08:41:50,451 INFO L78 Accepts]: Start accepts. Automaton has 13335 states and 24350 transitions. Word has length 106 [2021-11-09 08:41:50,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:50,451 INFO L470 AbstractCegarLoop]: Abstraction has 13335 states and 24350 transitions. [2021-11-09 08:41:50,452 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 08:41:50,452 INFO L276 IsEmpty]: Start isEmpty. Operand 13335 states and 24350 transitions. [2021-11-09 08:41:50,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-09 08:41:50,489 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:50,489 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 08:41:50,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 08:41:50,490 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 08:41:50,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:50,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1330919060, now seen corresponding path program 1 times [2021-11-09 08:41:50,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:50,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914879006] [2021-11-09 08:41:50,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:50,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:50,584 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 08:41:50,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:50,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914879006] [2021-11-09 08:41:50,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914879006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:50,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:50,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:41:50,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098081032] [2021-11-09 08:41:50,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:41:50,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:50,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:41:50,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:41:50,591 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 08:41:51,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:51,697 INFO L93 Difference]: Finished difference Result 39200 states and 71647 transitions. [2021-11-09 08:41:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:41:51,698 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 08:41:51,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:51,793 INFO L225 Difference]: With dead ends: 39200 [2021-11-09 08:41:51,793 INFO L226 Difference]: Without dead ends: 26050 [2021-11-09 08:41:51,813 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 08:41:51,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26050 states. [2021-11-09 08:41:53,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26050 to 25465. [2021-11-09 08:41:53,251 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 08:41:53,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25465 states to 25465 states and 46559 transitions. [2021-11-09 08:41:53,347 INFO L78 Accepts]: Start accepts. Automaton has 25465 states and 46559 transitions. Word has length 107 [2021-11-09 08:41:53,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:53,347 INFO L470 AbstractCegarLoop]: Abstraction has 25465 states and 46559 transitions. [2021-11-09 08:41:53,348 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 08:41:53,348 INFO L276 IsEmpty]: Start isEmpty. Operand 25465 states and 46559 transitions. [2021-11-09 08:41:53,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-09 08:41:53,415 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:53,415 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 08:41:53,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 08:41:53,416 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 08:41:53,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:53,417 INFO L85 PathProgramCache]: Analyzing trace with hash -25568940, now seen corresponding path program 1 times [2021-11-09 08:41:53,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:53,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621888668] [2021-11-09 08:41:53,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:53,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:53,512 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 08:41:53,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:53,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621888668] [2021-11-09 08:41:53,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621888668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:53,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:53,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:41:53,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344297436] [2021-11-09 08:41:53,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:41:53,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:53,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:41:53,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:41:53,516 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 08:41:55,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:55,330 INFO L93 Difference]: Finished difference Result 70229 states and 128010 transitions. [2021-11-09 08:41:55,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:41:55,331 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 08:41:55,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:55,445 INFO L225 Difference]: With dead ends: 70229 [2021-11-09 08:41:55,445 INFO L226 Difference]: Without dead ends: 44996 [2021-11-09 08:41:55,482 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 08:41:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44996 states. [2021-11-09 08:41:57,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44996 to 44411. [2021-11-09 08:41:57,598 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 08:41:57,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44411 states to 44411 states and 80736 transitions. [2021-11-09 08:41:57,742 INFO L78 Accepts]: Start accepts. Automaton has 44411 states and 80736 transitions. Word has length 108 [2021-11-09 08:41:57,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:57,743 INFO L470 AbstractCegarLoop]: Abstraction has 44411 states and 80736 transitions. [2021-11-09 08:41:57,743 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 08:41:57,743 INFO L276 IsEmpty]: Start isEmpty. Operand 44411 states and 80736 transitions. [2021-11-09 08:41:57,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-09 08:41:57,816 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:57,816 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 08:41:57,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 08:41:57,946 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 08:41:57,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:57,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1063515323, now seen corresponding path program 1 times [2021-11-09 08:41:57,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:57,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160972031] [2021-11-09 08:41:57,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:57,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:58,055 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 08:41:58,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:58,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160972031] [2021-11-09 08:41:58,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160972031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:58,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:58,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:41:58,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710568291] [2021-11-09 08:41:58,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:41:58,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:58,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:41:58,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:41:58,060 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 08:42:01,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:42:01,366 INFO L93 Difference]: Finished difference Result 130842 states and 237843 transitions. [2021-11-09 08:42:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:42:01,366 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 08:42:01,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:42:01,824 INFO L225 Difference]: With dead ends: 130842 [2021-11-09 08:42:01,824 INFO L226 Difference]: Without dead ends: 86731 [2021-11-09 08:42:01,877 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 08:42:01,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86731 states. [2021-11-09 08:42:04,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86731 to 44411. [2021-11-09 08:42:04,892 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 08:42:05,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44411 states to 44411 states and 80478 transitions. [2021-11-09 08:42:05,017 INFO L78 Accepts]: Start accepts. Automaton has 44411 states and 80478 transitions. Word has length 109 [2021-11-09 08:42:05,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:42:05,017 INFO L470 AbstractCegarLoop]: Abstraction has 44411 states and 80478 transitions. [2021-11-09 08:42:05,017 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 08:42:05,018 INFO L276 IsEmpty]: Start isEmpty. Operand 44411 states and 80478 transitions. [2021-11-09 08:42:05,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-09 08:42:05,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:42:05,060 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 08:42:05,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 08:42:05,061 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 08:42:05,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:05,062 INFO L85 PathProgramCache]: Analyzing trace with hash -902143271, now seen corresponding path program 2 times [2021-11-09 08:42:05,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:05,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538653464] [2021-11-09 08:42:05,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:05,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:05,169 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 08:42:05,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:05,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538653464] [2021-11-09 08:42:05,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538653464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:05,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:05,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:42:05,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164343350] [2021-11-09 08:42:05,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:42:05,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:05,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:42:05,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:42:05,174 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 08:42:07,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:42:07,571 INFO L93 Difference]: Finished difference Result 89101 states and 161412 transitions. [2021-11-09 08:42:07,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:42:07,572 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 08:42:07,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:42:07,659 INFO L225 Difference]: With dead ends: 89101 [2021-11-09 08:42:07,659 INFO L226 Difference]: Without dead ends: 44996 [2021-11-09 08:42:07,692 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 08:42:07,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44996 states. [2021-11-09 08:42:10,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44996 to 44411. [2021-11-09 08:42:10,049 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 08:42:10,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44411 states to 44411 states and 80350 transitions. [2021-11-09 08:42:10,137 INFO L78 Accepts]: Start accepts. Automaton has 44411 states and 80350 transitions. Word has length 109 [2021-11-09 08:42:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:42:10,138 INFO L470 AbstractCegarLoop]: Abstraction has 44411 states and 80350 transitions. [2021-11-09 08:42:10,138 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 08:42:10,138 INFO L276 IsEmpty]: Start isEmpty. Operand 44411 states and 80350 transitions. [2021-11-09 08:42:10,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-09 08:42:10,178 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:42:10,178 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, 1, 1, 1, 1, 1, 1] [2021-11-09 08:42:10,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 08:42:10,179 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 08:42:10,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:10,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1286714374, now seen corresponding path program 1 times [2021-11-09 08:42:10,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:10,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914855846] [2021-11-09 08:42:10,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:10,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:10,262 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 08:42:10,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:10,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914855846] [2021-11-09 08:42:10,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914855846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:10,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:10,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:42:10,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851206889] [2021-11-09 08:42:10,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:42:10,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:10,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:42:10,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:42:10,276 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 08:42:14,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:42:14,109 INFO L93 Difference]: Finished difference Result 124727 states and 225486 transitions. [2021-11-09 08:42:14,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:42:14,110 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 08:42:14,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:42:14,277 INFO L225 Difference]: With dead ends: 124727 [2021-11-09 08:42:14,278 INFO L226 Difference]: Without dead ends: 80582 [2021-11-09 08:42:14,308 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 08:42:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80582 states. [2021-11-09 08:42:18,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80582 to 79997. [2021-11-09 08:42:18,760 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 08:42:18,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79997 states to 79997 states and 144351 transitions. [2021-11-09 08:42:18,967 INFO L78 Accepts]: Start accepts. Automaton has 79997 states and 144351 transitions. Word has length 109 [2021-11-09 08:42:18,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:42:18,968 INFO L470 AbstractCegarLoop]: Abstraction has 79997 states and 144351 transitions. [2021-11-09 08:42:18,968 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 08:42:18,968 INFO L276 IsEmpty]: Start isEmpty. Operand 79997 states and 144351 transitions. [2021-11-09 08:42:19,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-09 08:42:19,023 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:42:19,023 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 08:42:19,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-09 08:42:19,024 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 08:42:19,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:19,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2137686241, now seen corresponding path program 1 times [2021-11-09 08:42:19,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:19,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87351792] [2021-11-09 08:42:19,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:19,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:19,168 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 08:42:19,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:19,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87351792] [2021-11-09 08:42:19,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87351792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:19,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:19,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:42:19,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410030983] [2021-11-09 08:42:19,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:42:19,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:19,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:42:19,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:42:19,171 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 08:42:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:42:28,830 INFO L93 Difference]: Finished difference Result 163970 states and 295277 transitions. [2021-11-09 08:42:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 08:42:28,831 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 08:42:28,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:42:29,207 INFO L225 Difference]: With dead ends: 163970 [2021-11-09 08:42:29,207 INFO L226 Difference]: Without dead ends: 163442 [2021-11-09 08:42:29,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=438, Unknown=0, NotChecked=0, Total=650 [2021-11-09 08:42:29,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163442 states. [2021-11-09 08:42:37,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163442 to 160185. [2021-11-09 08:42:38,064 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 08:42:38,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160185 states to 160185 states and 289026 transitions. [2021-11-09 08:42:38,933 INFO L78 Accepts]: Start accepts. Automaton has 160185 states and 289026 transitions. Word has length 110 [2021-11-09 08:42:38,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:42:38,934 INFO L470 AbstractCegarLoop]: Abstraction has 160185 states and 289026 transitions. [2021-11-09 08:42:38,934 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 08:42:38,935 INFO L276 IsEmpty]: Start isEmpty. Operand 160185 states and 289026 transitions. [2021-11-09 08:42:39,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-09 08:42:39,029 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:42:39,029 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 08:42:39,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-09 08:42:39,029 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 08:42:39,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:39,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1218206741, now seen corresponding path program 1 times [2021-11-09 08:42:39,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:39,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259993403] [2021-11-09 08:42:39,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:39,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:39,124 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 08:42:39,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:39,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259993403] [2021-11-09 08:42:39,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259993403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:39,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:39,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:42:39,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43821090] [2021-11-09 08:42:39,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:42:39,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:39,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:42:39,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:42:39,130 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)