./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa --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 65aa760b31ea5e49c4bb5ba7f2fb3b1e4951bce7653ba384d4ba0c02ae0acea3 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:57:41,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:57:41,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:57:41,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:57:41,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:57:41,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:57:41,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:57:41,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:57:41,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:57:41,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:57:41,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:57:41,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:57:41,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:57:41,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:57:41,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:57:41,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:57:41,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:57:41,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:57:41,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:57:41,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:57:41,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:57:41,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:57:41,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:57:41,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:57:41,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:57:41,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:57:41,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:57:41,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:57:41,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:57:41,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:57:41,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:57:41,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:57:41,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:57:41,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:57:41,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:57:41,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:57:41,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:57:41,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:57:41,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:57:41,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:57:41,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:57:41,872 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:57:41,894 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:57:41,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:57:41,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:57:41,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:57:41,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:57:41,900 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:57:41,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:57:41,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:57:41,901 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:57:41,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:57:41,901 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:57:41,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:57:41,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:57:41,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:57:41,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:57:41,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:57:41,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:57:41,902 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:57:41,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:57:41,902 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:57:41,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:57:41,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:57:41,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:57:41,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:57:41,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:57:41,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:57:41,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:57:41,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:57:41,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:57:41,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:57:41,903 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:57:41,903 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:57:41,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:57:41,903 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:57:41,904 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_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65aa760b31ea5e49c4bb5ba7f2fb3b1e4951bce7653ba384d4ba0c02ae0acea3 [2021-12-06 18:57:42,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:57:42,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:57:42,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:57:42,091 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:57:42,092 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:57:42,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2021-12-06 18:57:42,132 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/data/0276390a3/3e389b4c63334eae93bc1a9723cb5ae8/FLAGcbdb02c05 [2021-12-06 18:57:42,715 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:57:42,715 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2021-12-06 18:57:42,736 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/data/0276390a3/3e389b4c63334eae93bc1a9723cb5ae8/FLAGcbdb02c05 [2021-12-06 18:57:43,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/data/0276390a3/3e389b4c63334eae93bc1a9723cb5ae8 [2021-12-06 18:57:43,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:57:43,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:57:43,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:57:43,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:57:43,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:57:43,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:57:43" (1/1) ... [2021-12-06 18:57:43,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2402bcf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:43, skipping insertion in model container [2021-12-06 18:57:43,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:57:43" (1/1) ... [2021-12-06 18:57:43,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:57:43,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:57:43,536 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[20528,20541] [2021-12-06 18:57:43,572 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[27464,27477] [2021-12-06 18:57:44,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:57:44,109 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:57:44,159 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[20528,20541] [2021-12-06 18:57:44,169 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[27464,27477] [2021-12-06 18:57:44,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:57:44,536 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:57:44,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:44 WrapperNode [2021-12-06 18:57:44,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:57:44,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:57:44,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:57:44,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:57:44,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:44" (1/1) ... [2021-12-06 18:57:44,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:44" (1/1) ... [2021-12-06 18:57:44,821 INFO L137 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5206 [2021-12-06 18:57:44,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:57:44,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:57:44,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:57:44,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:57:44,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:44" (1/1) ... [2021-12-06 18:57:44,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:44" (1/1) ... [2021-12-06 18:57:44,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:44" (1/1) ... [2021-12-06 18:57:44,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:44" (1/1) ... [2021-12-06 18:57:45,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:44" (1/1) ... [2021-12-06 18:57:45,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:44" (1/1) ... [2021-12-06 18:57:45,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:44" (1/1) ... [2021-12-06 18:57:45,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:57:45,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:57:45,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:57:45,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:57:45,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:44" (1/1) ... [2021-12-06 18:57:45,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:57:45,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:45,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:57:45,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:57:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:57:45,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:57:45,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:57:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:57:45,305 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:57:45,306 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:57:48,276 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:57:48,291 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:57:48,292 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:57:48,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:57:48 BoogieIcfgContainer [2021-12-06 18:57:48,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:57:48,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:57:48,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:57:48,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:57:48,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:57:43" (1/3) ... [2021-12-06 18:57:48,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75db420d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:57:48, skipping insertion in model container [2021-12-06 18:57:48,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:57:44" (2/3) ... [2021-12-06 18:57:48,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75db420d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:57:48, skipping insertion in model container [2021-12-06 18:57:48,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:57:48" (3/3) ... [2021-12-06 18:57:48,300 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2021-12-06 18:57:48,304 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:57:48,304 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 18:57:48,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:57:48,348 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 [2021-12-06 18:57:48,348 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 18:57:48,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:48,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 18:57:48,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:48,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:48,382 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:48,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:48,386 INFO L85 PathProgramCache]: Analyzing trace with hash 720070723, now seen corresponding path program 1 times [2021-12-06 18:57:48,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:48,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169314084] [2021-12-06 18:57:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:48,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:48,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:48,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169314084] [2021-12-06 18:57:48,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169314084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:48,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:48,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:57:48,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915660966] [2021-12-06 18:57:48,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:48,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:57:48,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:48,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:57:48,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:57:48,577 INFO L87 Difference]: Start difference. First operand has 944 states, 941 states have (on average 1.8979808714133901) internal successors, (1786), 943 states have internal predecessors, (1786), 0 states have call successors, (0), 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 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:48,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:48,633 INFO L93 Difference]: Finished difference Result 1830 states and 3462 transitions. [2021-12-06 18:57:48,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:57:48,635 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-12-06 18:57:48,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:48,649 INFO L225 Difference]: With dead ends: 1830 [2021-12-06 18:57:48,650 INFO L226 Difference]: Without dead ends: 878 [2021-12-06 18:57:48,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:57:48,657 INFO L933 BasicCegarLoop]: 1717 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:48,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:48,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-12-06 18:57:48,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2021-12-06 18:57:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8869863013698631) internal successors, (1653), 877 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:48,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1653 transitions. [2021-12-06 18:57:48,717 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1653 transitions. Word has length 42 [2021-12-06 18:57:48,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:48,717 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1653 transitions. [2021-12-06 18:57:48,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:48,717 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1653 transitions. [2021-12-06 18:57:48,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 18:57:48,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:48,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:48,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:57:48,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:48,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:48,720 INFO L85 PathProgramCache]: Analyzing trace with hash 325703937, now seen corresponding path program 1 times [2021-12-06 18:57:48,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:48,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029794523] [2021-12-06 18:57:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:48,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:48,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:48,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029794523] [2021-12-06 18:57:48,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029794523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:48,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:48,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:57:48,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108112299] [2021-12-06 18:57:48,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:48,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:57:48,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:48,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:57:48,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:57:48,860 INFO L87 Difference]: Start difference. First operand 878 states and 1653 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:48,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:48,976 INFO L93 Difference]: Finished difference Result 950 states and 1765 transitions. [2021-12-06 18:57:48,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:57:48,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-12-06 18:57:48,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:48,981 INFO L225 Difference]: With dead ends: 950 [2021-12-06 18:57:48,981 INFO L226 Difference]: Without dead ends: 878 [2021-12-06 18:57:48,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:57:48,983 INFO L933 BasicCegarLoop]: 1651 mSDtfsCounter, 3 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:48,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6551 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:48,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-12-06 18:57:48,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2021-12-06 18:57:49,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8299086757990868) internal successors, (1603), 877 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:49,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1603 transitions. [2021-12-06 18:57:49,003 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1603 transitions. Word has length 42 [2021-12-06 18:57:49,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:49,003 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1603 transitions. [2021-12-06 18:57:49,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:49,004 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1603 transitions. [2021-12-06 18:57:49,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 18:57:49,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:49,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:49,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:57:49,006 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:49,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash -537240347, now seen corresponding path program 1 times [2021-12-06 18:57:49,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:49,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170778233] [2021-12-06 18:57:49,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:49,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:49,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:49,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:49,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170778233] [2021-12-06 18:57:49,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170778233] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:49,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:49,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:57:49,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429333505] [2021-12-06 18:57:49,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:49,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:57:49,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:49,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:57:49,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:49,072 INFO L87 Difference]: Start difference. First operand 878 states and 1603 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) [2021-12-06 18:57:51,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:51,669 INFO L93 Difference]: Finished difference Result 2382 states and 4476 transitions. [2021-12-06 18:57:51,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:57:51,669 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 60 [2021-12-06 18:57:51,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:51,676 INFO L225 Difference]: With dead ends: 2382 [2021-12-06 18:57:51,676 INFO L226 Difference]: Without dead ends: 1629 [2021-12-06 18:57:51,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:51,678 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 905 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:51,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 639 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 18:57:51,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2021-12-06 18:57:51,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2021-12-06 18:57:51,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1627 states have (on average 1.5869698832206516) internal successors, (2582), 1628 states have internal predecessors, (2582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:51,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2582 transitions. [2021-12-06 18:57:51,722 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2582 transitions. Word has length 60 [2021-12-06 18:57:51,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:51,722 INFO L470 AbstractCegarLoop]: Abstraction has 1629 states and 2582 transitions. [2021-12-06 18:57:51,722 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) [2021-12-06 18:57:51,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2582 transitions. [2021-12-06 18:57:51,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 18:57:51,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:51,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:51,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:57:51,727 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:51,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:51,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1207745120, now seen corresponding path program 1 times [2021-12-06 18:57:51,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:51,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536906896] [2021-12-06 18:57:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:51,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:51,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:51,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:51,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536906896] [2021-12-06 18:57:51,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536906896] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:51,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:51,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:57:51,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957371476] [2021-12-06 18:57:51,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:51,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:57:51,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:51,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:57:51,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:51,811 INFO L87 Difference]: Start difference. First operand 1629 states and 2582 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:51,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:51,842 INFO L93 Difference]: Finished difference Result 1759 states and 2788 transitions. [2021-12-06 18:57:51,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:57:51,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-06 18:57:51,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:51,853 INFO L225 Difference]: With dead ends: 1759 [2021-12-06 18:57:51,854 INFO L226 Difference]: Without dead ends: 1691 [2021-12-06 18:57:51,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:51,856 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 1537 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:51,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1803 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:51,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2021-12-06 18:57:51,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1689. [2021-12-06 18:57:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.5874333135743923) internal successors, (2678), 1688 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:51,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2678 transitions. [2021-12-06 18:57:51,896 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2678 transitions. Word has length 91 [2021-12-06 18:57:51,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:51,897 INFO L470 AbstractCegarLoop]: Abstraction has 1689 states and 2678 transitions. [2021-12-06 18:57:51,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:51,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2678 transitions. [2021-12-06 18:57:51,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 18:57:51,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:51,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:51,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:57:51,898 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:51,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:51,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1564953708, now seen corresponding path program 1 times [2021-12-06 18:57:51,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:51,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088454874] [2021-12-06 18:57:51,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:51,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:51,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:51,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088454874] [2021-12-06 18:57:51,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088454874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:51,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:51,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:57:51,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675085522] [2021-12-06 18:57:51,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:51,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:57:51,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:51,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:57:51,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:51,950 INFO L87 Difference]: Start difference. First operand 1689 states and 2678 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:51,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:51,980 INFO L93 Difference]: Finished difference Result 1933 states and 3066 transitions. [2021-12-06 18:57:51,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:57:51,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-06 18:57:51,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:51,992 INFO L225 Difference]: With dead ends: 1933 [2021-12-06 18:57:51,992 INFO L226 Difference]: Without dead ends: 1805 [2021-12-06 18:57:51,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:51,994 INFO L933 BasicCegarLoop]: 1692 mSDtfsCounter, 1533 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:51,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1802 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:51,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2021-12-06 18:57:52,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1803. [2021-12-06 18:57:52,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1801 states have (on average 1.5874514158800666) internal successors, (2859), 1802 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:52,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2859 transitions. [2021-12-06 18:57:52,031 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2859 transitions. Word has length 91 [2021-12-06 18:57:52,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:52,032 INFO L470 AbstractCegarLoop]: Abstraction has 1803 states and 2859 transitions. [2021-12-06 18:57:52,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:52,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2859 transitions. [2021-12-06 18:57:52,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 18:57:52,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:52,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:52,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:57:52,034 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:52,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:52,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1479108296, now seen corresponding path program 1 times [2021-12-06 18:57:52,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:52,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438232256] [2021-12-06 18:57:52,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:52,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:52,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:52,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:52,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438232256] [2021-12-06 18:57:52,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438232256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:52,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:52,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:57:52,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380039133] [2021-12-06 18:57:52,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:52,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:57:52,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:52,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:57:52,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:52,092 INFO L87 Difference]: Start difference. First operand 1803 states and 2859 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:52,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:52,120 INFO L93 Difference]: Finished difference Result 2263 states and 3589 transitions. [2021-12-06 18:57:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:57:52,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-06 18:57:52,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:52,130 INFO L225 Difference]: With dead ends: 2263 [2021-12-06 18:57:52,130 INFO L226 Difference]: Without dead ends: 2021 [2021-12-06 18:57:52,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:52,133 INFO L933 BasicCegarLoop]: 1687 mSDtfsCounter, 1529 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:52,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:52,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2021-12-06 18:57:52,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 2019. [2021-12-06 18:57:52,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 2017 states have (on average 1.5860188398611799) internal successors, (3199), 2018 states have internal predecessors, (3199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3199 transitions. [2021-12-06 18:57:52,173 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3199 transitions. Word has length 91 [2021-12-06 18:57:52,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:52,173 INFO L470 AbstractCegarLoop]: Abstraction has 2019 states and 3199 transitions. [2021-12-06 18:57:52,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:52,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3199 transitions. [2021-12-06 18:57:52,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 18:57:52,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:52,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:52,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:57:52,175 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:52,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:52,175 INFO L85 PathProgramCache]: Analyzing trace with hash 733525566, now seen corresponding path program 1 times [2021-12-06 18:57:52,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:52,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161897703] [2021-12-06 18:57:52,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:52,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:52,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:52,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161897703] [2021-12-06 18:57:52,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161897703] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:52,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:52,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:57:52,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727669555] [2021-12-06 18:57:52,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:52,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:57:52,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:52,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:57:52,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:52,225 INFO L87 Difference]: Start difference. First operand 2019 states and 3199 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:52,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:52,259 INFO L93 Difference]: Finished difference Result 2887 states and 4569 transitions. [2021-12-06 18:57:52,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:57:52,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-06 18:57:52,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:52,273 INFO L225 Difference]: With dead ends: 2887 [2021-12-06 18:57:52,273 INFO L226 Difference]: Without dead ends: 2429 [2021-12-06 18:57:52,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:52,276 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 1525 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:52,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1800 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:52,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2021-12-06 18:57:52,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2427. [2021-12-06 18:57:52,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2425 states have (on average 1.581443298969072) internal successors, (3835), 2426 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:52,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3835 transitions. [2021-12-06 18:57:52,327 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3835 transitions. Word has length 91 [2021-12-06 18:57:52,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:52,327 INFO L470 AbstractCegarLoop]: Abstraction has 2427 states and 3835 transitions. [2021-12-06 18:57:52,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3835 transitions. [2021-12-06 18:57:52,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 18:57:52,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:52,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:52,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 18:57:52,328 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:52,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:52,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1206505292, now seen corresponding path program 1 times [2021-12-06 18:57:52,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:52,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638022555] [2021-12-06 18:57:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:52,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:52,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:52,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:52,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638022555] [2021-12-06 18:57:52,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638022555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:52,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:52,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:57:52,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107267341] [2021-12-06 18:57:52,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:52,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:57:52,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:52,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:57:52,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:52,371 INFO L87 Difference]: Start difference. First operand 2427 states and 3835 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:52,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:52,440 INFO L93 Difference]: Finished difference Result 4063 states and 6397 transitions. [2021-12-06 18:57:52,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:57:52,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-06 18:57:52,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:52,454 INFO L225 Difference]: With dead ends: 4063 [2021-12-06 18:57:52,454 INFO L226 Difference]: Without dead ends: 3197 [2021-12-06 18:57:52,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:52,456 INFO L933 BasicCegarLoop]: 1677 mSDtfsCounter, 1521 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:52,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 1799 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:52,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2021-12-06 18:57:52,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 3195. [2021-12-06 18:57:52,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3195 states, 3193 states have (on average 1.5718759787034138) internal successors, (5019), 3194 states have internal predecessors, (5019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:52,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 5019 transitions. [2021-12-06 18:57:52,523 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 5019 transitions. Word has length 91 [2021-12-06 18:57:52,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:52,523 INFO L470 AbstractCegarLoop]: Abstraction has 3195 states and 5019 transitions. [2021-12-06 18:57:52,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 5019 transitions. [2021-12-06 18:57:52,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 18:57:52,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:52,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:52,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 18:57:52,524 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:52,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:52,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1494177322, now seen corresponding path program 1 times [2021-12-06 18:57:52,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:52,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121386104] [2021-12-06 18:57:52,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:52,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:52,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:52,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121386104] [2021-12-06 18:57:52,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121386104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:52,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:52,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:57:52,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517184571] [2021-12-06 18:57:52,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:52,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:57:52,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:52,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:57:52,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:57:52,595 INFO L87 Difference]: Start difference. First operand 3195 states and 5019 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:53,305 INFO L93 Difference]: Finished difference Result 26071 states and 40649 transitions. [2021-12-06 18:57:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 18:57:53,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-06 18:57:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:53,378 INFO L225 Difference]: With dead ends: 26071 [2021-12-06 18:57:53,378 INFO L226 Difference]: Without dead ends: 24437 [2021-12-06 18:57:53,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-06 18:57:53,385 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 13389 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13389 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:53,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13389 Valid, 3111 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:57:53,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24437 states. [2021-12-06 18:57:53,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24437 to 4827. [2021-12-06 18:57:53,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4825 states have (on average 1.55419689119171) internal successors, (7499), 4826 states have internal predecessors, (7499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 7499 transitions. [2021-12-06 18:57:53,651 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 7499 transitions. Word has length 91 [2021-12-06 18:57:53,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:53,651 INFO L470 AbstractCegarLoop]: Abstraction has 4827 states and 7499 transitions. [2021-12-06 18:57:53,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:53,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 7499 transitions. [2021-12-06 18:57:53,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 18:57:53,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:53,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:53,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 18:57:53,652 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:53,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:53,653 INFO L85 PathProgramCache]: Analyzing trace with hash -30360326, now seen corresponding path program 1 times [2021-12-06 18:57:53,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:53,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252184607] [2021-12-06 18:57:53,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:53,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:53,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:53,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252184607] [2021-12-06 18:57:53,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252184607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:53,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:53,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:57:53,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308405277] [2021-12-06 18:57:53,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:53,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:57:53,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:53,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:57:53,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:53,691 INFO L87 Difference]: Start difference. First operand 4827 states and 7499 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:53,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:53,878 INFO L93 Difference]: Finished difference Result 9649 states and 14911 transitions. [2021-12-06 18:57:53,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:57:53,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-06 18:57:53,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:53,887 INFO L225 Difference]: With dead ends: 9649 [2021-12-06 18:57:53,887 INFO L226 Difference]: Without dead ends: 6383 [2021-12-06 18:57:53,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:53,890 INFO L933 BasicCegarLoop]: 1632 mSDtfsCounter, 1505 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:53,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 1735 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:53,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6383 states. [2021-12-06 18:57:54,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6383 to 6381. [2021-12-06 18:57:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6381 states, 6379 states have (on average 1.542091236870983) internal successors, (9837), 6380 states have internal predecessors, (9837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 9837 transitions. [2021-12-06 18:57:54,058 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 9837 transitions. Word has length 93 [2021-12-06 18:57:54,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:54,058 INFO L470 AbstractCegarLoop]: Abstraction has 6381 states and 9837 transitions. [2021-12-06 18:57:54,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:54,059 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 9837 transitions. [2021-12-06 18:57:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 18:57:54,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:54,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:54,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 18:57:54,060 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:54,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash 36133186, now seen corresponding path program 1 times [2021-12-06 18:57:54,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:54,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919922226] [2021-12-06 18:57:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:54,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:54,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:54,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919922226] [2021-12-06 18:57:54,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919922226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:54,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:54,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:57:54,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854161431] [2021-12-06 18:57:54,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:54,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:57:54,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:54,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:57:54,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:57:54,225 INFO L87 Difference]: Start difference. First operand 6381 states and 9837 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:54,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:54,554 INFO L93 Difference]: Finished difference Result 11201 states and 17199 transitions. [2021-12-06 18:57:54,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:57:54,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-06 18:57:54,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:54,563 INFO L225 Difference]: With dead ends: 11201 [2021-12-06 18:57:54,563 INFO L226 Difference]: Without dead ends: 6383 [2021-12-06 18:57:54,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:57:54,569 INFO L933 BasicCegarLoop]: 1643 mSDtfsCounter, 7944 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7944 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:54,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7944 Valid, 2276 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:57:54,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6383 states. [2021-12-06 18:57:54,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6383 to 6381. [2021-12-06 18:57:54,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6381 states, 6379 states have (on average 1.5345665464806395) internal successors, (9789), 6380 states have internal predecessors, (9789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:54,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 9789 transitions. [2021-12-06 18:57:54,771 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 9789 transitions. Word has length 93 [2021-12-06 18:57:54,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:54,772 INFO L470 AbstractCegarLoop]: Abstraction has 6381 states and 9789 transitions. [2021-12-06 18:57:54,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:54,772 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 9789 transitions. [2021-12-06 18:57:54,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 18:57:54,773 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:54,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:54,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 18:57:54,773 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:54,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:54,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1825047262, now seen corresponding path program 1 times [2021-12-06 18:57:54,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:54,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290988274] [2021-12-06 18:57:54,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:54,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:54,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:54,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290988274] [2021-12-06 18:57:54,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290988274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:54,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:54,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:57:54,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929581311] [2021-12-06 18:57:54,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:54,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:57:54,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:54,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:57:54,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:54,807 INFO L87 Difference]: Start difference. First operand 6381 states and 9789 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:55,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:55,075 INFO L93 Difference]: Finished difference Result 15441 states and 23455 transitions. [2021-12-06 18:57:55,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:57:55,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-06 18:57:55,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:55,089 INFO L225 Difference]: With dead ends: 15441 [2021-12-06 18:57:55,089 INFO L226 Difference]: Without dead ends: 10623 [2021-12-06 18:57:55,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:55,095 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 1513 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:55,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10623 states. [2021-12-06 18:57:55,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10623 to 10621. [2021-12-06 18:57:55,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10621 states, 10619 states have (on average 1.5109709012148036) internal successors, (16045), 10620 states have internal predecessors, (16045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:55,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10621 states to 10621 states and 16045 transitions. [2021-12-06 18:57:55,409 INFO L78 Accepts]: Start accepts. Automaton has 10621 states and 16045 transitions. Word has length 93 [2021-12-06 18:57:55,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:55,409 INFO L470 AbstractCegarLoop]: Abstraction has 10621 states and 16045 transitions. [2021-12-06 18:57:55,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:55,409 INFO L276 IsEmpty]: Start isEmpty. Operand 10621 states and 16045 transitions. [2021-12-06 18:57:55,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 18:57:55,410 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:55,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:55,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 18:57:55,410 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:55,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:55,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1222412418, now seen corresponding path program 1 times [2021-12-06 18:57:55,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:55,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937998168] [2021-12-06 18:57:55,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:55,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:55,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:55,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937998168] [2021-12-06 18:57:55,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937998168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:55,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:55,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:57:55,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959585558] [2021-12-06 18:57:55,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:55,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:57:55,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:55,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:57:55,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:55,442 INFO L87 Difference]: Start difference. First operand 10621 states and 16045 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:55,962 INFO L93 Difference]: Finished difference Result 27585 states and 41263 transitions. [2021-12-06 18:57:55,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:57:55,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-06 18:57:55,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:55,981 INFO L225 Difference]: With dead ends: 27585 [2021-12-06 18:57:55,981 INFO L226 Difference]: Without dead ends: 18527 [2021-12-06 18:57:55,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:57:55,990 INFO L933 BasicCegarLoop]: 1672 mSDtfsCounter, 1517 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:55,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 1798 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:57:56,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18527 states. [2021-12-06 18:57:56,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18527 to 18525. [2021-12-06 18:57:56,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18525 states, 18523 states have (on average 1.4846947038816607) internal successors, (27501), 18524 states have internal predecessors, (27501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18525 states to 18525 states and 27501 transitions. [2021-12-06 18:57:56,585 INFO L78 Accepts]: Start accepts. Automaton has 18525 states and 27501 transitions. Word has length 93 [2021-12-06 18:57:56,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:56,585 INFO L470 AbstractCegarLoop]: Abstraction has 18525 states and 27501 transitions. [2021-12-06 18:57:56,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:56,585 INFO L276 IsEmpty]: Start isEmpty. Operand 18525 states and 27501 transitions. [2021-12-06 18:57:56,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 18:57:56,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:56,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:56,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 18:57:56,586 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:56,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:56,587 INFO L85 PathProgramCache]: Analyzing trace with hash 705405902, now seen corresponding path program 1 times [2021-12-06 18:57:56,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:56,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443945157] [2021-12-06 18:57:56,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:56,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:56,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:56,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:56,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443945157] [2021-12-06 18:57:56,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443945157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:56,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:56,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:57:56,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438242849] [2021-12-06 18:57:56,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:56,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:57:56,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:56,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:57:56,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:57:56,635 INFO L87 Difference]: Start difference. First operand 18525 states and 27501 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:57,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:57,305 INFO L93 Difference]: Finished difference Result 35487 states and 52526 transitions. [2021-12-06 18:57:57,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:57:57,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-12-06 18:57:57,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:57,324 INFO L225 Difference]: With dead ends: 35487 [2021-12-06 18:57:57,324 INFO L226 Difference]: Without dead ends: 18525 [2021-12-06 18:57:57,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:57:57,338 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 4912 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4912 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:57,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4912 Valid, 3091 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:57:57,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18525 states. [2021-12-06 18:57:58,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18525 to 18525. [2021-12-06 18:57:58,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18525 states, 18523 states have (on average 1.4708740484802678) internal successors, (27245), 18524 states have internal predecessors, (27245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:58,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18525 states to 18525 states and 27245 transitions. [2021-12-06 18:57:58,074 INFO L78 Accepts]: Start accepts. Automaton has 18525 states and 27245 transitions. Word has length 94 [2021-12-06 18:57:58,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:58,074 INFO L470 AbstractCegarLoop]: Abstraction has 18525 states and 27245 transitions. [2021-12-06 18:57:58,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:58,074 INFO L276 IsEmpty]: Start isEmpty. Operand 18525 states and 27245 transitions. [2021-12-06 18:57:58,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 18:57:58,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:58,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:58,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 18:57:58,075 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:58,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:58,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1549411404, now seen corresponding path program 1 times [2021-12-06 18:57:58,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:58,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20363786] [2021-12-06 18:57:58,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:58,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:58,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:58,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:58,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20363786] [2021-12-06 18:57:58,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20363786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:58,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:58,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:57:58,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636032054] [2021-12-06 18:57:58,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:58,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:57:58,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:58,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:57:58,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:57:58,128 INFO L87 Difference]: Start difference. First operand 18525 states and 27245 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:58,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:58,850 INFO L93 Difference]: Finished difference Result 35487 states and 52014 transitions. [2021-12-06 18:57:58,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:57:58,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-12-06 18:57:58,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:58,867 INFO L225 Difference]: With dead ends: 35487 [2021-12-06 18:57:58,867 INFO L226 Difference]: Without dead ends: 18525 [2021-12-06 18:57:58,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:57:58,879 INFO L933 BasicCegarLoop]: 1558 mSDtfsCounter, 4872 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4872 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:58,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4872 Valid, 3090 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:57:58,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18525 states. [2021-12-06 18:57:59,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18525 to 18525. [2021-12-06 18:57:59,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18525 states, 18523 states have (on average 1.460508556929223) internal successors, (27053), 18524 states have internal predecessors, (27053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:59,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18525 states to 18525 states and 27053 transitions. [2021-12-06 18:57:59,594 INFO L78 Accepts]: Start accepts. Automaton has 18525 states and 27053 transitions. Word has length 94 [2021-12-06 18:57:59,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:59,595 INFO L470 AbstractCegarLoop]: Abstraction has 18525 states and 27053 transitions. [2021-12-06 18:57:59,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:59,595 INFO L276 IsEmpty]: Start isEmpty. Operand 18525 states and 27053 transitions. [2021-12-06 18:57:59,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 18:57:59,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:59,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:59,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 18:57:59,596 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:57:59,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:59,596 INFO L85 PathProgramCache]: Analyzing trace with hash 847811530, now seen corresponding path program 1 times [2021-12-06 18:57:59,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:59,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567043834] [2021-12-06 18:57:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:59,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:59,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:59,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567043834] [2021-12-06 18:57:59,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567043834] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:57:59,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:57:59,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:57:59,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305606730] [2021-12-06 18:57:59,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:57:59,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:57:59,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:59,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:57:59,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:57:59,643 INFO L87 Difference]: Start difference. First operand 18525 states and 27053 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:01,031 INFO L93 Difference]: Finished difference Result 33024 states and 47703 transitions. [2021-12-06 18:58:01,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:58:01,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-12-06 18:58:01,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:01,060 INFO L225 Difference]: With dead ends: 33024 [2021-12-06 18:58:01,060 INFO L226 Difference]: Without dead ends: 33022 [2021-12-06 18:58:01,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:58:01,067 INFO L933 BasicCegarLoop]: 1636 mSDtfsCounter, 289 mSDsluCounter, 4796 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 6432 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:01,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 6432 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:58:01,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33022 states. [2021-12-06 18:58:01,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33022 to 19293. [2021-12-06 18:58:01,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19293 states, 19291 states have (on average 1.4388574983152767) internal successors, (27757), 19292 states have internal predecessors, (27757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:01,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19293 states to 19293 states and 27757 transitions. [2021-12-06 18:58:01,986 INFO L78 Accepts]: Start accepts. Automaton has 19293 states and 27757 transitions. Word has length 94 [2021-12-06 18:58:01,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:01,986 INFO L470 AbstractCegarLoop]: Abstraction has 19293 states and 27757 transitions. [2021-12-06 18:58:01,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:01,986 INFO L276 IsEmpty]: Start isEmpty. Operand 19293 states and 27757 transitions. [2021-12-06 18:58:01,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 18:58:01,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:01,994 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:01,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 18:58:01,994 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:58:01,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:01,994 INFO L85 PathProgramCache]: Analyzing trace with hash 101873069, now seen corresponding path program 1 times [2021-12-06 18:58:01,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:01,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822182589] [2021-12-06 18:58:01,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:01,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 18:58:02,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:02,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822182589] [2021-12-06 18:58:02,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822182589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:02,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:02,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:58:02,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728270397] [2021-12-06 18:58:02,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:02,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:58:02,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:02,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:58:02,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:58:02,068 INFO L87 Difference]: Start difference. First operand 19293 states and 27757 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:07,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:07,534 INFO L93 Difference]: Finished difference Result 146861 states and 209493 transitions. [2021-12-06 18:58:07,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:58:07,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 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 130 [2021-12-06 18:58:07,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:07,685 INFO L225 Difference]: With dead ends: 146861 [2021-12-06 18:58:07,686 INFO L226 Difference]: Without dead ends: 129131 [2021-12-06 18:58:07,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:58:07,711 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 10767 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10767 SdHoareTripleChecker+Valid, 4089 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:07,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10767 Valid, 4089 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:58:07,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129131 states. [2021-12-06 18:58:10,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129131 to 37021. [2021-12-06 18:58:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37021 states, 37019 states have (on average 1.427510197466166) internal successors, (52845), 37020 states have internal predecessors, (52845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37021 states to 37021 states and 52845 transitions. [2021-12-06 18:58:10,189 INFO L78 Accepts]: Start accepts. Automaton has 37021 states and 52845 transitions. Word has length 130 [2021-12-06 18:58:10,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:10,189 INFO L470 AbstractCegarLoop]: Abstraction has 37021 states and 52845 transitions. [2021-12-06 18:58:10,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:10,189 INFO L276 IsEmpty]: Start isEmpty. Operand 37021 states and 52845 transitions. [2021-12-06 18:58:10,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 18:58:10,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:10,198 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:10,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 18:58:10,199 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:58:10,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:10,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1349380685, now seen corresponding path program 1 times [2021-12-06 18:58:10,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:10,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538802875] [2021-12-06 18:58:10,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:10,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 18:58:10,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:10,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538802875] [2021-12-06 18:58:10,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538802875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:10,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:10,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:58:10,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778157352] [2021-12-06 18:58:10,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:10,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:58:10,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:10,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:58:10,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:58:10,269 INFO L87 Difference]: Start difference. First operand 37021 states and 52845 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:17,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:17,450 INFO L93 Difference]: Finished difference Result 164589 states and 234581 transitions. [2021-12-06 18:58:17,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:58:17,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 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 130 [2021-12-06 18:58:17,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:17,609 INFO L225 Difference]: With dead ends: 164589 [2021-12-06 18:58:17,609 INFO L226 Difference]: Without dead ends: 146859 [2021-12-06 18:58:17,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:58:17,637 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 10518 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10518 SdHoareTripleChecker+Valid, 4163 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:17,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10518 Valid, 4163 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:58:17,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146859 states. [2021-12-06 18:58:21,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146859 to 63645. [2021-12-06 18:58:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63645 states, 63643 states have (on average 1.4191191490030326) internal successors, (90317), 63644 states have internal predecessors, (90317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63645 states to 63645 states and 90317 transitions. [2021-12-06 18:58:21,493 INFO L78 Accepts]: Start accepts. Automaton has 63645 states and 90317 transitions. Word has length 130 [2021-12-06 18:58:21,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:21,493 INFO L470 AbstractCegarLoop]: Abstraction has 63645 states and 90317 transitions. [2021-12-06 18:58:21,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:21,494 INFO L276 IsEmpty]: Start isEmpty. Operand 63645 states and 90317 transitions. [2021-12-06 18:58:21,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 18:58:21,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:21,503 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:21,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 18:58:21,503 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:58:21,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:21,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1476153629, now seen corresponding path program 1 times [2021-12-06 18:58:21,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:21,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183847280] [2021-12-06 18:58:21,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:21,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 18:58:21,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:21,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183847280] [2021-12-06 18:58:21,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183847280] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:21,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:21,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:58:21,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495610710] [2021-12-06 18:58:21,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:21,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:58:21,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:21,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:58:21,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:58:21,574 INFO L87 Difference]: Start difference. First operand 63645 states and 90317 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:30,133 INFO L93 Difference]: Finished difference Result 182317 states and 259669 transitions. [2021-12-06 18:58:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:58:30,134 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 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 130 [2021-12-06 18:58:30,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:30,321 INFO L225 Difference]: With dead ends: 182317 [2021-12-06 18:58:30,322 INFO L226 Difference]: Without dead ends: 164587 [2021-12-06 18:58:30,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:58:30,350 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 10439 mSDsluCounter, 2494 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10439 SdHoareTripleChecker+Valid, 4191 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:30,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10439 Valid, 4191 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:58:30,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164587 states. [2021-12-06 18:58:35,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164587 to 81373. [2021-12-06 18:58:35,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81373 states, 81371 states have (on average 1.4182571186294872) internal successors, (115405), 81372 states have internal predecessors, (115405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:35,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81373 states to 81373 states and 115405 transitions. [2021-12-06 18:58:35,500 INFO L78 Accepts]: Start accepts. Automaton has 81373 states and 115405 transitions. Word has length 130 [2021-12-06 18:58:35,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:35,500 INFO L470 AbstractCegarLoop]: Abstraction has 81373 states and 115405 transitions. [2021-12-06 18:58:35,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:35,500 INFO L276 IsEmpty]: Start isEmpty. Operand 81373 states and 115405 transitions. [2021-12-06 18:58:35,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 18:58:35,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:35,511 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:35,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 18:58:35,511 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:58:35,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:35,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1583354627, now seen corresponding path program 1 times [2021-12-06 18:58:35,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:35,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795853295] [2021-12-06 18:58:35,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:35,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 18:58:35,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:35,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795853295] [2021-12-06 18:58:35,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795853295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:35,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:35,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:58:35,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525948691] [2021-12-06 18:58:35,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:35,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:58:35,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:35,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:58:35,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:58:35,580 INFO L87 Difference]: Start difference. First operand 81373 states and 115405 transitions. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:46,139 INFO L93 Difference]: Finished difference Result 200045 states and 284757 transitions. [2021-12-06 18:58:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:58:46,139 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 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 130 [2021-12-06 18:58:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:46,360 INFO L225 Difference]: With dead ends: 200045 [2021-12-06 18:58:46,360 INFO L226 Difference]: Without dead ends: 182315 [2021-12-06 18:58:46,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:58:46,396 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 10478 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10478 SdHoareTripleChecker+Valid, 4217 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:46,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10478 Valid, 4217 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:58:46,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182315 states. [2021-12-06 18:58:52,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182315 to 99101. [2021-12-06 18:58:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99101 states, 99099 states have (on average 1.4177035086125995) internal successors, (140493), 99100 states have internal predecessors, (140493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99101 states to 99101 states and 140493 transitions. [2021-12-06 18:58:53,303 INFO L78 Accepts]: Start accepts. Automaton has 99101 states and 140493 transitions. Word has length 130 [2021-12-06 18:58:53,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:53,303 INFO L470 AbstractCegarLoop]: Abstraction has 99101 states and 140493 transitions. [2021-12-06 18:58:53,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:53,303 INFO L276 IsEmpty]: Start isEmpty. Operand 99101 states and 140493 transitions. [2021-12-06 18:58:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 18:58:53,316 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:53,316 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:53,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 18:58:53,317 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:58:53,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:53,317 INFO L85 PathProgramCache]: Analyzing trace with hash 162359075, now seen corresponding path program 1 times [2021-12-06 18:58:53,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:53,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414041594] [2021-12-06 18:58:53,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:53,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:58:53,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:53,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414041594] [2021-12-06 18:58:53,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414041594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:58:53,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:58:53,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:58:53,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883402301] [2021-12-06 18:58:53,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:58:53,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:58:53,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:53,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:58:53,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:58:53,387 INFO L87 Difference]: Start difference. First operand 99101 states and 140493 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:06,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:59:06,163 INFO L93 Difference]: Finished difference Result 217773 states and 309845 transitions. [2021-12-06 18:59:06,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:59:06,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 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 130 [2021-12-06 18:59:06,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:59:06,405 INFO L225 Difference]: With dead ends: 217773 [2021-12-06 18:59:06,405 INFO L226 Difference]: Without dead ends: 200043 [2021-12-06 18:59:06,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:59:06,446 INFO L933 BasicCegarLoop]: 1697 mSDtfsCounter, 10601 mSDsluCounter, 2522 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10601 SdHoareTripleChecker+Valid, 4219 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:59:06,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10601 Valid, 4219 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:59:06,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200043 states. [2021-12-06 18:59:14,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200043 to 116829. [2021-12-06 18:59:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116829 states, 116827 states have (on average 1.4173179145231838) internal successors, (165581), 116828 states have internal predecessors, (165581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:15,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116829 states to 116829 states and 165581 transitions. [2021-12-06 18:59:15,131 INFO L78 Accepts]: Start accepts. Automaton has 116829 states and 165581 transitions. Word has length 130 [2021-12-06 18:59:15,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:59:15,132 INFO L470 AbstractCegarLoop]: Abstraction has 116829 states and 165581 transitions. [2021-12-06 18:59:15,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:15,132 INFO L276 IsEmpty]: Start isEmpty. Operand 116829 states and 165581 transitions. [2021-12-06 18:59:15,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 18:59:15,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:59:15,145 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:59:15,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 18:59:15,145 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:59:15,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:59:15,146 INFO L85 PathProgramCache]: Analyzing trace with hash -403461309, now seen corresponding path program 1 times [2021-12-06 18:59:15,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:59:15,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513139431] [2021-12-06 18:59:15,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:15,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:59:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:59:15,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:59:15,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513139431] [2021-12-06 18:59:15,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513139431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:59:15,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:59:15,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:59:15,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189561474] [2021-12-06 18:59:15,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:59:15,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:59:15,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:59:15,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:59:15,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:59:15,212 INFO L87 Difference]: Start difference. First operand 116829 states and 165581 transitions. Second operand has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:30,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:59:30,911 INFO L93 Difference]: Finished difference Result 235501 states and 334933 transitions. [2021-12-06 18:59:30,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:59:30,912 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 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 130 [2021-12-06 18:59:30,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:59:31,181 INFO L225 Difference]: With dead ends: 235501 [2021-12-06 18:59:31,181 INFO L226 Difference]: Without dead ends: 217771 [2021-12-06 18:59:31,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:59:31,222 INFO L933 BasicCegarLoop]: 1698 mSDtfsCounter, 10735 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10735 SdHoareTripleChecker+Valid, 4225 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:59:31,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10735 Valid, 4225 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:59:31,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217771 states. [2021-12-06 18:59:41,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217771 to 134557. [2021-12-06 18:59:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134557 states, 134555 states have (on average 1.417033926647096) internal successors, (190669), 134556 states have internal predecessors, (190669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134557 states to 134557 states and 190669 transitions. [2021-12-06 18:59:41,910 INFO L78 Accepts]: Start accepts. Automaton has 134557 states and 190669 transitions. Word has length 130 [2021-12-06 18:59:41,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:59:41,910 INFO L470 AbstractCegarLoop]: Abstraction has 134557 states and 190669 transitions. [2021-12-06 18:59:41,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:41,910 INFO L276 IsEmpty]: Start isEmpty. Operand 134557 states and 190669 transitions. [2021-12-06 18:59:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 18:59:41,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:59:41,927 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:59:41,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 18:59:41,928 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:59:41,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:59:41,928 INFO L85 PathProgramCache]: Analyzing trace with hash -214245533, now seen corresponding path program 1 times [2021-12-06 18:59:41,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:59:41,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654958485] [2021-12-06 18:59:41,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:41,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:59:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:41,990 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 18:59:41,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:59:41,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654958485] [2021-12-06 18:59:41,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654958485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:59:41,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:59:41,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:59:41,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816753721] [2021-12-06 18:59:41,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:59:41,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:59:41,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:59:41,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:59:41,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:59:41,991 INFO L87 Difference]: Start difference. First operand 134557 states and 190669 transitions. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:00,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:00:00,589 INFO L93 Difference]: Finished difference Result 242349 states and 344789 transitions. [2021-12-06 19:00:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:00:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 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 130 [2021-12-06 19:00:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:00:00,880 INFO L225 Difference]: With dead ends: 242349 [2021-12-06 19:00:00,880 INFO L226 Difference]: Without dead ends: 230059 [2021-12-06 19:00:00,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:00:00,920 INFO L933 BasicCegarLoop]: 1695 mSDtfsCounter, 10734 mSDsluCounter, 2419 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10734 SdHoareTripleChecker+Valid, 4114 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:00:00,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10734 Valid, 4114 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:00:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230059 states. [2021-12-06 19:00:13,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230059 to 146845. [2021-12-06 19:00:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146845 states, 146843 states have (on average 1.4178748731638553) internal successors, (208205), 146844 states have internal predecessors, (208205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:13,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146845 states to 146845 states and 208205 transitions. [2021-12-06 19:00:13,670 INFO L78 Accepts]: Start accepts. Automaton has 146845 states and 208205 transitions. Word has length 130 [2021-12-06 19:00:13,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:00:13,670 INFO L470 AbstractCegarLoop]: Abstraction has 146845 states and 208205 transitions. [2021-12-06 19:00:13,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:13,670 INFO L276 IsEmpty]: Start isEmpty. Operand 146845 states and 208205 transitions. [2021-12-06 19:00:13,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 19:00:13,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:00:13,686 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:00:13,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 19:00:13,686 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:00:13,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:00:13,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1524812958, now seen corresponding path program 1 times [2021-12-06 19:00:13,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:00:13,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958110108] [2021-12-06 19:00:13,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:13,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:00:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:00:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:00:13,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:00:13,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958110108] [2021-12-06 19:00:13,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958110108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:00:13,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:00:13,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:00:13,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221913020] [2021-12-06 19:00:13,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:00:13,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:00:13,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:00:13,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:00:13,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:00:13,722 INFO L87 Difference]: Start difference. First operand 146845 states and 208205 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:25,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:00:25,701 INFO L93 Difference]: Finished difference Result 292129 states and 413935 transitions. [2021-12-06 19:00:25,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:00:25,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-12-06 19:00:25,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:00:25,865 INFO L225 Difference]: With dead ends: 292129 [2021-12-06 19:00:25,865 INFO L226 Difference]: Without dead ends: 146847 [2021-12-06 19:00:25,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:00:25,926 INFO L933 BasicCegarLoop]: 1640 mSDtfsCounter, 67 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 3228 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:00:25,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 3228 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:00:26,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146847 states. [2021-12-06 19:00:38,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146847 to 146845. [2021-12-06 19:00:38,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146845 states, 146843 states have (on average 1.4071968020266543) internal successors, (206637), 146844 states have internal predecessors, (206637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:38,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146845 states to 146845 states and 206637 transitions. [2021-12-06 19:00:38,410 INFO L78 Accepts]: Start accepts. Automaton has 146845 states and 206637 transitions. Word has length 131 [2021-12-06 19:00:38,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:00:38,410 INFO L470 AbstractCegarLoop]: Abstraction has 146845 states and 206637 transitions. [2021-12-06 19:00:38,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:38,411 INFO L276 IsEmpty]: Start isEmpty. Operand 146845 states and 206637 transitions. [2021-12-06 19:00:38,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 19:00:38,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:00:38,418 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:00:38,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 19:00:38,419 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:00:38,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:00:38,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1437694164, now seen corresponding path program 1 times [2021-12-06 19:00:38,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:00:38,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248690003] [2021-12-06 19:00:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:38,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:00:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:00:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:00:38,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:00:38,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248690003] [2021-12-06 19:00:38,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248690003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:00:38,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:00:38,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:00:38,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411924313] [2021-12-06 19:00:38,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:00:38,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:00:38,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:00:38,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:00:38,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:00:38,453 INFO L87 Difference]: Start difference. First operand 146845 states and 206637 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:44,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:00:44,625 INFO L93 Difference]: Finished difference Result 219489 states and 308719 transitions. [2021-12-06 19:00:44,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:00:44,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-12-06 19:00:44,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:00:44,703 INFO L225 Difference]: With dead ends: 219489 [2021-12-06 19:00:44,703 INFO L226 Difference]: Without dead ends: 74207 [2021-12-06 19:00:44,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:00:44,750 INFO L933 BasicCegarLoop]: 1633 mSDtfsCounter, 63 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:00:44,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 3213 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:00:44,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74207 states. [2021-12-06 19:00:50,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74207 to 74205. [2021-12-06 19:00:50,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74205 states, 74203 states have (on average 1.3985014082988558) internal successors, (103773), 74204 states have internal predecessors, (103773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:50,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74205 states to 74205 states and 103773 transitions. [2021-12-06 19:00:50,814 INFO L78 Accepts]: Start accepts. Automaton has 74205 states and 103773 transitions. Word has length 131 [2021-12-06 19:00:50,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:00:50,815 INFO L470 AbstractCegarLoop]: Abstraction has 74205 states and 103773 transitions. [2021-12-06 19:00:50,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:50,815 INFO L276 IsEmpty]: Start isEmpty. Operand 74205 states and 103773 transitions. [2021-12-06 19:00:50,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 19:00:50,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:00:50,820 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:00:50,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 19:00:50,820 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:00:50,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:00:50,821 INFO L85 PathProgramCache]: Analyzing trace with hash 318418954, now seen corresponding path program 1 times [2021-12-06 19:00:50,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:00:50,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741718392] [2021-12-06 19:00:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:50,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:00:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:00:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:00:50,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:00:50,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741718392] [2021-12-06 19:00:50,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741718392] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:00:50,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759864676] [2021-12-06 19:00:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:50,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:00:50,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:00:50,997 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:00:50,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:00:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:00:51,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:00:51,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:00:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:00:51,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:00:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:00:51,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759864676] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:00:51,685 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:00:51,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2021-12-06 19:00:51,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508918278] [2021-12-06 19:00:51,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:00:51,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 19:00:51,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:00:51,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 19:00:51,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:00:51,687 INFO L87 Difference]: Start difference. First operand 74205 states and 103773 transitions. Second operand has 18 states, 18 states have (on average 20.88888888888889) internal successors, (376), 18 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:01:49,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:01:49,850 INFO L93 Difference]: Finished difference Result 695148 states and 971023 transitions. [2021-12-06 19:01:49,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-12-06 19:01:49,851 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.88888888888889) internal successors, (376), 18 states have internal predecessors, (376), 0 states have call successors, (0), 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 131 [2021-12-06 19:01:49,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:01:50,602 INFO L225 Difference]: With dead ends: 695148 [2021-12-06 19:01:50,602 INFO L226 Difference]: Without dead ends: 622506 [2021-12-06 19:01:50,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3721 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1973, Invalid=7927, Unknown=0, NotChecked=0, Total=9900 [2021-12-06 19:01:50,732 INFO L933 BasicCegarLoop]: 1818 mSDtfsCounter, 23450 mSDsluCounter, 6556 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23450 SdHoareTripleChecker+Valid, 8374 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:01:50,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23450 Valid, 8374 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 19:01:51,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622506 states. [2021-12-06 19:02:30,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622506 to 408157. [2021-12-06 19:02:30,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408157 states, 408155 states have (on average 1.375901312001568) internal successors, (561581), 408156 states have internal predecessors, (561581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:02:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408157 states to 408157 states and 561581 transitions. [2021-12-06 19:02:31,388 INFO L78 Accepts]: Start accepts. Automaton has 408157 states and 561581 transitions. Word has length 131 [2021-12-06 19:02:31,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:02:31,389 INFO L470 AbstractCegarLoop]: Abstraction has 408157 states and 561581 transitions. [2021-12-06 19:02:31,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.88888888888889) internal successors, (376), 18 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:02:31,389 INFO L276 IsEmpty]: Start isEmpty. Operand 408157 states and 561581 transitions. [2021-12-06 19:02:31,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 19:02:31,396 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:02:31,396 INFO L514 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:02:31,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:02:31,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 19:02:31,598 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:02:31,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:02:31,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1058761409, now seen corresponding path program 1 times [2021-12-06 19:02:31,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:02:31,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113653496] [2021-12-06 19:02:31,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:02:31,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:02:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:02:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:02:31,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:02:31,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113653496] [2021-12-06 19:02:31,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113653496] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:02:31,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603116786] [2021-12-06 19:02:31,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:02:31,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:02:31,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:02:31,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:02:31,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d138ad-98e8-462f-bfa8-85c14c475d91/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:02:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:02:31,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 19:02:31,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:02:32,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:02:33,376 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:02:33,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603116786] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:02:33,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:02:33,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2021-12-06 19:02:33,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870300330] [2021-12-06 19:02:33,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:02:33,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 19:02:33,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:02:33,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 19:02:33,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2021-12-06 19:02:33,378 INFO L87 Difference]: Start difference. First operand 408157 states and 561581 transitions. Second operand has 30 states, 30 states have (on average 12.333333333333334) internal successors, (370), 29 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)