./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.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_41603454-20a9-4c84-8482-87d225b27e55/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41603454-20a9-4c84-8482-87d225b27e55/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_41603454-20a9-4c84-8482-87d225b27e55/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41603454-20a9-4c84-8482-87d225b27e55/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41603454-20a9-4c84-8482-87d225b27e55/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_41603454-20a9-4c84-8482-87d225b27e55/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 351e3bc8fe69313dfbfbeaf7f37de5791a1bf381bb5ef0945347e83cb39fb485 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:39:40,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:39:40,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:39:40,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:39:40,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:39:40,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:39:40,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:39:40,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:39:40,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:39:40,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:39:40,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:39:40,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:39:40,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:39:40,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:39:40,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:39:40,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:39:40,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:39:40,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:39:40,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:39:40,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:39:40,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:39:40,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:39:40,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:39:40,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:39:40,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:39:40,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:39:40,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:39:40,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:39:40,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:39:40,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:39:40,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:39:40,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:39:40,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:39:40,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:39:40,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:39:40,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:39:40,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:39:40,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:39:40,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:39:40,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:39:40,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:39:40,850 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41603454-20a9-4c84-8482-87d225b27e55/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:39:40,868 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:39:40,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:39:40,868 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:39:40,869 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:39:40,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:39:40,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:39:40,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:39:40,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:39:40,870 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:39:40,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:39:40,870 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:39:40,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:39:40,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:39:40,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:39:40,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:39:40,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:39:40,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:39:40,871 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:39:40,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:39:40,871 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:39:40,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:39:40,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:39:40,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:39:40,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:39:40,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:39:40,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:39:40,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:39:40,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:39:40,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:39:40,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:39:40,872 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:39:40,872 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:39:40,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:39:40,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:39:40,873 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_41603454-20a9-4c84-8482-87d225b27e55/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41603454-20a9-4c84-8482-87d225b27e55/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 351e3bc8fe69313dfbfbeaf7f37de5791a1bf381bb5ef0945347e83cb39fb485 [2021-12-06 21:39:41,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:39:41,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:39:41,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:39:41,057 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:39:41,057 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:39:41,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41603454-20a9-4c84-8482-87d225b27e55/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-12-06 21:39:41,107 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41603454-20a9-4c84-8482-87d225b27e55/bin/uautomizer-DrprNOufMa/data/9d1d14db3/b9201ffcc3b846158620422653bfc30e/FLAG34443895a [2021-12-06 21:39:41,544 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:39:41,544 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41603454-20a9-4c84-8482-87d225b27e55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-12-06 21:39:41,554 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41603454-20a9-4c84-8482-87d225b27e55/bin/uautomizer-DrprNOufMa/data/9d1d14db3/b9201ffcc3b846158620422653bfc30e/FLAG34443895a [2021-12-06 21:39:41,567 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41603454-20a9-4c84-8482-87d225b27e55/bin/uautomizer-DrprNOufMa/data/9d1d14db3/b9201ffcc3b846158620422653bfc30e [2021-12-06 21:39:41,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:39:41,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:39:41,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:39:41,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:39:41,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:39:41,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:39:41" (1/1) ... [2021-12-06 21:39:41,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e97a610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:39:41, skipping insertion in model container [2021-12-06 21:39:41,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:39:41" (1/1) ... [2021-12-06 21:39:41,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:39:41,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:39:41,800 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_41603454-20a9-4c84-8482-87d225b27e55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[11101,11114] [2021-12-06 21:39:41,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:39:41,863 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:39:41,915 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_41603454-20a9-4c84-8482-87d225b27e55/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[11101,11114] [2021-12-06 21:39:41,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:39:41,957 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:39:41,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:39:41 WrapperNode [2021-12-06 21:39:41,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:39:41,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:39:41,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:39:41,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:39:41,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:39:41" (1/1) ... [2021-12-06 21:39:41,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:39:41" (1/1) ... [2021-12-06 21:39:42,020 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1107 [2021-12-06 21:39:42,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:39:42,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:39:42,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:39:42,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:39:42,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:39:41" (1/1) ... [2021-12-06 21:39:42,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:39:41" (1/1) ... [2021-12-06 21:39:42,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:39:41" (1/1) ... [2021-12-06 21:39:42,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:39:41" (1/1) ... [2021-12-06 21:39:42,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:39:41" (1/1) ... [2021-12-06 21:39:42,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:39:41" (1/1) ... [2021-12-06 21:39:42,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:39:41" (1/1) ... [2021-12-06 21:39:42,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:39:42,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:39:42,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:39:42,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:39:42,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:39:41" (1/1) ... [2021-12-06 21:39:42,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:39:42,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41603454-20a9-4c84-8482-87d225b27e55/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:39:42,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41603454-20a9-4c84-8482-87d225b27e55/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:39:42,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41603454-20a9-4c84-8482-87d225b27e55/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:39:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:39:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:39:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:39:42,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:39:42,202 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:39:42,203 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:39:42,737 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:39:42,746 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:39:42,746 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 21:39:42,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:39:42 BoogieIcfgContainer [2021-12-06 21:39:42,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:39:42,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:39:42,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:39:42,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:39:42,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:39:41" (1/3) ... [2021-12-06 21:39:42,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf67ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:39:42, skipping insertion in model container [2021-12-06 21:39:42,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:39:41" (2/3) ... [2021-12-06 21:39:42,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf67ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:39:42, skipping insertion in model container [2021-12-06 21:39:42,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:39:42" (3/3) ... [2021-12-06 21:39:42,756 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-12-06 21:39:42,760 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:39:42,761 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 21:39:42,802 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:39:42,807 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 21:39:42,808 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 21:39:42,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 330 states, 328 states have (on average 1.6524390243902438) internal successors, (542), 329 states have internal predecessors, (542), 0 states have call successors, (0), 0 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 21:39:42,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-06 21:39:42,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:39:42,836 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] [2021-12-06 21:39:42,836 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:39:42,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:39:42,840 INFO L85 PathProgramCache]: Analyzing trace with hash 498035691, now seen corresponding path program 1 times [2021-12-06 21:39:42,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:39:42,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423605406] [2021-12-06 21:39:42,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:39:42,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:39:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:39:43,054 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 21:39:43,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:39:43,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423605406] [2021-12-06 21:39:43,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423605406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:39:43,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:39:43,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:39:43,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123208234] [2021-12-06 21:39:43,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:39:43,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:39:43,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:39:43,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:39:43,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:39:43,092 INFO L87 Difference]: Start difference. First operand has 330 states, 328 states have (on average 1.6524390243902438) internal successors, (542), 329 states have internal predecessors, (542), 0 states have call successors, (0), 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 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 21:39:43,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:39:43,229 INFO L93 Difference]: Finished difference Result 632 states and 1022 transitions. [2021-12-06 21:39:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:39:43,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-12-06 21:39:43,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:39:43,241 INFO L225 Difference]: With dead ends: 632 [2021-12-06 21:39:43,241 INFO L226 Difference]: Without dead ends: 327 [2021-12-06 21:39:43,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:39:43,247 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 163 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:39:43,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1414 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:39:43,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-06 21:39:43,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-12-06 21:39:43,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.5368098159509203) internal successors, (501), 326 states have internal predecessors, (501), 0 states have call successors, (0), 0 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 21:39:43,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 501 transitions. [2021-12-06 21:39:43,304 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 501 transitions. Word has length 79 [2021-12-06 21:39:43,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:39:43,304 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 501 transitions. [2021-12-06 21:39:43,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 21:39:43,305 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 501 transitions. [2021-12-06 21:39:43,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 21:39:43,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:39:43,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:39:43,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 21:39:43,310 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:39:43,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:39:43,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2093359288, now seen corresponding path program 1 times [2021-12-06 21:39:43,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:39:43,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514473789] [2021-12-06 21:39:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:39:43,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:39:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:39:43,427 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 21:39:43,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:39:43,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514473789] [2021-12-06 21:39:43,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514473789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:39:43,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:39:43,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:39:43,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142053722] [2021-12-06 21:39:43,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:39:43,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:39:43,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:39:43,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:39:43,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:39:43,430 INFO L87 Difference]: Start difference. First operand 327 states and 501 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 21:39:43,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:39:43,480 INFO L93 Difference]: Finished difference Result 761 states and 1193 transitions. [2021-12-06 21:39:43,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:39:43,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-06 21:39:43,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:39:43,485 INFO L225 Difference]: With dead ends: 761 [2021-12-06 21:39:43,485 INFO L226 Difference]: Without dead ends: 483 [2021-12-06 21:39:43,487 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 21:39:43,488 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 304 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:39:43,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 890 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:39:43,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-12-06 21:39:43,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 481. [2021-12-06 21:39:43,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.5520833333333333) internal successors, (745), 480 states have internal predecessors, (745), 0 states have call successors, (0), 0 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 21:39:43,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 745 transitions. [2021-12-06 21:39:43,524 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 745 transitions. Word has length 110 [2021-12-06 21:39:43,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:39:43,524 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 745 transitions. [2021-12-06 21:39:43,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 21:39:43,525 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 745 transitions. [2021-12-06 21:39:43,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 21:39:43,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:39:43,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:39:43,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 21:39:43,529 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:39:43,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:39:43,529 INFO L85 PathProgramCache]: Analyzing trace with hash -55375790, now seen corresponding path program 1 times [2021-12-06 21:39:43,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:39:43,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980847098] [2021-12-06 21:39:43,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:39:43,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:39:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:39:43,632 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 21:39:43,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:39:43,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980847098] [2021-12-06 21:39:43,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980847098] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:39:43,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:39:43,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:39:43,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737337435] [2021-12-06 21:39:43,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:39:43,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:39:43,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:39:43,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:39:43,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:39:43,636 INFO L87 Difference]: Start difference. First operand 481 states and 745 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 21:39:43,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:39:43,687 INFO L93 Difference]: Finished difference Result 1163 states and 1832 transitions. [2021-12-06 21:39:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:39:43,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-12-06 21:39:43,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:39:43,693 INFO L225 Difference]: With dead ends: 1163 [2021-12-06 21:39:43,693 INFO L226 Difference]: Without dead ends: 744 [2021-12-06 21:39:43,694 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 21:39:43,695 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 289 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:39:43,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 855 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:39:43,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-12-06 21:39:43,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 742. [2021-12-06 21:39:43,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 1.562753036437247) internal successors, (1158), 741 states have internal predecessors, (1158), 0 states have call successors, (0), 0 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 21:39:43,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1158 transitions. [2021-12-06 21:39:43,726 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1158 transitions. Word has length 112 [2021-12-06 21:39:43,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:39:43,726 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1158 transitions. [2021-12-06 21:39:43,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 21:39:43,727 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1158 transitions. [2021-12-06 21:39:43,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-06 21:39:43,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:39:43,729 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:39:43,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 21:39:43,729 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:39:43,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:39:43,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1569587546, now seen corresponding path program 1 times [2021-12-06 21:39:43,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:39:43,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936840898] [2021-12-06 21:39:43,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:39:43,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:39:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:39:43,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:39:43,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:39:43,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936840898] [2021-12-06 21:39:43,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936840898] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:39:43,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:39:43,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:39:43,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903711819] [2021-12-06 21:39:43,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:39:43,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:39:43,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:39:43,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:39:43,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:39:43,782 INFO L87 Difference]: Start difference. First operand 742 states and 1158 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 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 21:39:43,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:39:43,829 INFO L93 Difference]: Finished difference Result 1834 states and 2894 transitions. [2021-12-06 21:39:43,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:39:43,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-12-06 21:39:43,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:39:43,835 INFO L225 Difference]: With dead ends: 1834 [2021-12-06 21:39:43,835 INFO L226 Difference]: Without dead ends: 1167 [2021-12-06 21:39:43,836 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 21:39:43,838 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 274 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:39:43,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 889 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:39:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2021-12-06 21:39:43,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1165. [2021-12-06 21:39:43,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1164 states have (on average 1.5670103092783505) internal successors, (1824), 1164 states have internal predecessors, (1824), 0 states have call successors, (0), 0 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 21:39:43,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1824 transitions. [2021-12-06 21:39:43,884 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1824 transitions. Word has length 114 [2021-12-06 21:39:43,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:39:43,884 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 1824 transitions. [2021-12-06 21:39:43,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 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 21:39:43,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1824 transitions. [2021-12-06 21:39:43,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-06 21:39:43,887 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:39:43,887 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, 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 21:39:43,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 21:39:43,887 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:39:43,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:39:43,888 INFO L85 PathProgramCache]: Analyzing trace with hash -598144290, now seen corresponding path program 1 times [2021-12-06 21:39:43,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:39:43,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597556064] [2021-12-06 21:39:43,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:39:43,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:39:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:39:43,933 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 21:39:43,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:39:43,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597556064] [2021-12-06 21:39:43,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597556064] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:39:43,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:39:43,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:39:43,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028028320] [2021-12-06 21:39:43,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:39:43,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:39:43,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:39:43,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:39:43,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:39:43,935 INFO L87 Difference]: Start difference. First operand 1165 states and 1824 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 21:39:44,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:39:44,019 INFO L93 Difference]: Finished difference Result 2887 states and 4547 transitions. [2021-12-06 21:39:44,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:39:44,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-12-06 21:39:44,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:39:44,027 INFO L225 Difference]: With dead ends: 2887 [2021-12-06 21:39:44,028 INFO L226 Difference]: Without dead ends: 1810 [2021-12-06 21:39:44,029 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 21:39:44,031 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 259 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:39:44,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 785 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:39:44,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2021-12-06 21:39:44,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1808. [2021-12-06 21:39:44,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1808 states, 1807 states have (on average 1.563918096292197) internal successors, (2826), 1807 states have internal predecessors, (2826), 0 states have call successors, (0), 0 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 21:39:44,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2826 transitions. [2021-12-06 21:39:44,112 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2826 transitions. Word has length 116 [2021-12-06 21:39:44,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:39:44,112 INFO L470 AbstractCegarLoop]: Abstraction has 1808 states and 2826 transitions. [2021-12-06 21:39:44,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 21:39:44,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2826 transitions. [2021-12-06 21:39:44,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 21:39:44,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:39:44,117 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, 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 21:39:44,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 21:39:44,117 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:39:44,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:39:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1082431554, now seen corresponding path program 1 times [2021-12-06 21:39:44,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:39:44,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567515943] [2021-12-06 21:39:44,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:39:44,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:39:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:39:44,165 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 21:39:44,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:39:44,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567515943] [2021-12-06 21:39:44,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567515943] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:39:44,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:39:44,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:39:44,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575760361] [2021-12-06 21:39:44,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:39:44,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:39:44,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:39:44,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:39:44,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:39:44,166 INFO L87 Difference]: Start difference. First operand 1808 states and 2826 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 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 21:39:44,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:39:44,265 INFO L93 Difference]: Finished difference Result 4392 states and 6872 transitions. [2021-12-06 21:39:44,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:39:44,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-12-06 21:39:44,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:39:44,277 INFO L225 Difference]: With dead ends: 4392 [2021-12-06 21:39:44,277 INFO L226 Difference]: Without dead ends: 2685 [2021-12-06 21:39:44,279 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 21:39:44,280 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 244 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:39:44,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 750 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:39:44,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2021-12-06 21:39:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2683. [2021-12-06 21:39:44,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2683 states, 2682 states have (on average 1.5510812826249067) internal successors, (4160), 2682 states have internal predecessors, (4160), 0 states have call successors, (0), 0 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 21:39:44,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 4160 transitions. [2021-12-06 21:39:44,407 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 4160 transitions. Word has length 118 [2021-12-06 21:39:44,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:39:44,407 INFO L470 AbstractCegarLoop]: Abstraction has 2683 states and 4160 transitions. [2021-12-06 21:39:44,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 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 21:39:44,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 4160 transitions. [2021-12-06 21:39:44,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-06 21:39:44,413 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:39:44,413 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, 1, 1, 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 21:39:44,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 21:39:44,413 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:39:44,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:39:44,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1267336044, now seen corresponding path program 1 times [2021-12-06 21:39:44,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:39:44,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980656007] [2021-12-06 21:39:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:39:44,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:39:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:39:44,484 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 21:39:44,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:39:44,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980656007] [2021-12-06 21:39:44,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980656007] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:39:44,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:39:44,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:39:44,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576286349] [2021-12-06 21:39:44,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:39:44,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:39:44,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:39:44,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:39:44,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:39:44,486 INFO L87 Difference]: Start difference. First operand 2683 states and 4160 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 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 21:39:45,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:39:45,100 INFO L93 Difference]: Finished difference Result 15784 states and 24519 transitions. [2021-12-06 21:39:45,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:39:45,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 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 120 [2021-12-06 21:39:45,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:39:45,179 INFO L225 Difference]: With dead ends: 15784 [2021-12-06 21:39:45,179 INFO L226 Difference]: Without dead ends: 13206 [2021-12-06 21:39:45,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:39:45,186 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 3063 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3063 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:39:45,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3063 Valid, 3100 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:39:45,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13206 states. [2021-12-06 21:39:45,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13206 to 5166. [2021-12-06 21:39:45,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5166 states, 5165 states have (on average 1.5295256534365924) internal successors, (7900), 5165 states have internal predecessors, (7900), 0 states have call successors, (0), 0 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 21:39:45,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 7900 transitions. [2021-12-06 21:39:45,533 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 7900 transitions. Word has length 120 [2021-12-06 21:39:45,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:39:45,534 INFO L470 AbstractCegarLoop]: Abstraction has 5166 states and 7900 transitions. [2021-12-06 21:39:45,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 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 21:39:45,534 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 7900 transitions. [2021-12-06 21:39:45,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 21:39:45,543 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:39:45,543 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, 1, 1, 1, 1, 1, 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 21:39:45,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 21:39:45,543 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:39:45,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:39:45,544 INFO L85 PathProgramCache]: Analyzing trace with hash -621228175, now seen corresponding path program 1 times [2021-12-06 21:39:45,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:39:45,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883739136] [2021-12-06 21:39:45,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:39:45,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:39:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:39:45,675 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 21:39:45,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:39:45,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883739136] [2021-12-06 21:39:45,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883739136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:39:45,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:39:45,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:39:45,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662853156] [2021-12-06 21:39:45,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:39:45,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:39:45,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:39:45,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:39:45,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:39:45,676 INFO L87 Difference]: Start difference. First operand 5166 states and 7900 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 21:39:46,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:39:46,771 INFO L93 Difference]: Finished difference Result 26107 states and 39536 transitions. [2021-12-06 21:39:46,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:39:46,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-12-06 21:39:46,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:39:46,820 INFO L225 Difference]: With dead ends: 26107 [2021-12-06 21:39:46,820 INFO L226 Difference]: Without dead ends: 21036 [2021-12-06 21:39:46,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:39:46,827 INFO L933 BasicCegarLoop]: 1139 mSDtfsCounter, 1870 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:39:46,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1870 Valid, 2475 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 21:39:46,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21036 states. [2021-12-06 21:39:47,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21036 to 21028. [2021-12-06 21:39:47,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21028 states, 21027 states have (on average 1.504113758500975) internal successors, (31627), 21027 states have internal predecessors, (31627), 0 states have call successors, (0), 0 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 21:39:47,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21028 states to 21028 states and 31627 transitions. [2021-12-06 21:39:47,772 INFO L78 Accepts]: Start accepts. Automaton has 21028 states and 31627 transitions. Word has length 123 [2021-12-06 21:39:47,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:39:47,772 INFO L470 AbstractCegarLoop]: Abstraction has 21028 states and 31627 transitions. [2021-12-06 21:39:47,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 21:39:47,773 INFO L276 IsEmpty]: Start isEmpty. Operand 21028 states and 31627 transitions. [2021-12-06 21:39:47,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-06 21:39:47,806 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:39:47,806 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, 1, 1, 1, 1, 1, 1, 1, 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 21:39:47,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 21:39:47,807 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:39:47,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:39:47,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1699798234, now seen corresponding path program 1 times [2021-12-06 21:39:47,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:39:47,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238192318] [2021-12-06 21:39:47,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:39:47,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:39:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:39:47,846 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 21:39:47,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:39:47,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238192318] [2021-12-06 21:39:47,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238192318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:39:47,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:39:47,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:39:47,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964724265] [2021-12-06 21:39:47,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:39:47,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:39:47,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:39:47,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:39:47,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:39:47,848 INFO L87 Difference]: Start difference. First operand 21028 states and 31627 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 21:39:49,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:39:49,269 INFO L93 Difference]: Finished difference Result 53370 states and 80175 transitions. [2021-12-06 21:39:49,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:39:49,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 125 [2021-12-06 21:39:49,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:39:49,319 INFO L225 Difference]: With dead ends: 53370 [2021-12-06 21:39:49,319 INFO L226 Difference]: Without dead ends: 36544 [2021-12-06 21:39:49,335 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 21:39:49,335 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 349 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:39:49,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 1056 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:39:49,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36544 states. [2021-12-06 21:39:50,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36544 to 36542. [2021-12-06 21:39:50,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36542 states, 36541 states have (on average 1.4911195643250048) internal successors, (54487), 36541 states have internal predecessors, (54487), 0 states have call successors, (0), 0 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 21:39:50,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36542 states to 36542 states and 54487 transitions. [2021-12-06 21:39:50,961 INFO L78 Accepts]: Start accepts. Automaton has 36542 states and 54487 transitions. Word has length 125 [2021-12-06 21:39:50,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:39:50,962 INFO L470 AbstractCegarLoop]: Abstraction has 36542 states and 54487 transitions. [2021-12-06 21:39:50,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 21:39:50,962 INFO L276 IsEmpty]: Start isEmpty. Operand 36542 states and 54487 transitions. [2021-12-06 21:39:51,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-06 21:39:51,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:39:51,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:39:51,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 21:39:51,051 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:39:51,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:39:51,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1357098248, now seen corresponding path program 1 times [2021-12-06 21:39:51,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:39:51,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778810565] [2021-12-06 21:39:51,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:39:51,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:39:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:39:51,090 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 21:39:51,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:39:51,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778810565] [2021-12-06 21:39:51,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778810565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:39:51,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:39:51,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:39:51,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829571584] [2021-12-06 21:39:51,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:39:51,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:39:51,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:39:51,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:39:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:39:51,092 INFO L87 Difference]: Start difference. First operand 36542 states and 54487 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 21:39:53,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:39:53,512 INFO L93 Difference]: Finished difference Result 83822 states and 124831 transitions. [2021-12-06 21:39:53,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:39:53,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 125 [2021-12-06 21:39:53,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:39:53,602 INFO L225 Difference]: With dead ends: 83822 [2021-12-06 21:39:53,602 INFO L226 Difference]: Without dead ends: 59225 [2021-12-06 21:39:53,664 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 21:39:53,665 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 328 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:39:53,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 1157 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:39:53,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59225 states. [2021-12-06 21:39:56,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59225 to 59223. [2021-12-06 21:39:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59223 states, 59222 states have (on average 1.4779136131842896) internal successors, (87525), 59222 states have internal predecessors, (87525), 0 states have call successors, (0), 0 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 21:39:56,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59223 states to 59223 states and 87525 transitions. [2021-12-06 21:39:56,144 INFO L78 Accepts]: Start accepts. Automaton has 59223 states and 87525 transitions. Word has length 125 [2021-12-06 21:39:56,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:39:56,144 INFO L470 AbstractCegarLoop]: Abstraction has 59223 states and 87525 transitions. [2021-12-06 21:39:56,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 21:39:56,145 INFO L276 IsEmpty]: Start isEmpty. Operand 59223 states and 87525 transitions. [2021-12-06 21:39:56,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-06 21:39:56,212 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:39:56,212 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, 1, 1, 1, 1, 1, 1, 1, 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 21:39:56,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 21:39:56,212 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:39:56,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:39:56,213 INFO L85 PathProgramCache]: Analyzing trace with hash 716954330, now seen corresponding path program 1 times [2021-12-06 21:39:56,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:39:56,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829543365] [2021-12-06 21:39:56,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:39:56,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:39:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:39:56,256 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 21:39:56,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:39:56,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829543365] [2021-12-06 21:39:56,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829543365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:39:56,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:39:56,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:39:56,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701019276] [2021-12-06 21:39:56,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:39:56,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:39:56,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:39:56,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:39:56,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:39:56,257 INFO L87 Difference]: Start difference. First operand 59223 states and 87525 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 21:39:59,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:39:59,914 INFO L93 Difference]: Finished difference Result 120135 states and 177071 transitions. [2021-12-06 21:39:59,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:39:59,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 125 [2021-12-06 21:39:59,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:40:00,030 INFO L225 Difference]: With dead ends: 120135 [2021-12-06 21:40:00,031 INFO L226 Difference]: Without dead ends: 88513 [2021-12-06 21:40:00,057 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 21:40:00,058 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 281 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:40:00,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 1149 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:40:00,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88513 states. [2021-12-06 21:40:03,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88513 to 88511. [2021-12-06 21:40:03,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88511 states, 88510 states have (on average 1.462693480962603) internal successors, (129463), 88510 states have internal predecessors, (129463), 0 states have call successors, (0), 0 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 21:40:03,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88511 states to 88511 states and 129463 transitions. [2021-12-06 21:40:03,927 INFO L78 Accepts]: Start accepts. Automaton has 88511 states and 129463 transitions. Word has length 125 [2021-12-06 21:40:03,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:40:03,927 INFO L470 AbstractCegarLoop]: Abstraction has 88511 states and 129463 transitions. [2021-12-06 21:40:03,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 21:40:03,927 INFO L276 IsEmpty]: Start isEmpty. Operand 88511 states and 129463 transitions. [2021-12-06 21:40:04,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-06 21:40:04,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:40:04,021 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, 1, 1, 1, 1, 1, 1, 1, 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 21:40:04,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 21:40:04,021 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:40:04,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:40:04,022 INFO L85 PathProgramCache]: Analyzing trace with hash -55854518, now seen corresponding path program 1 times [2021-12-06 21:40:04,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:40:04,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420500242] [2021-12-06 21:40:04,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:40:04,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:40:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:40:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:40:04,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:40:04,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420500242] [2021-12-06 21:40:04,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420500242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:40:04,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:40:04,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:40:04,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719769517] [2021-12-06 21:40:04,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:40:04,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:40:04,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:40:04,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:40:04,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:40:04,067 INFO L87 Difference]: Start difference. First operand 88511 states and 129463 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 21:40:08,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:40:08,984 INFO L93 Difference]: Finished difference Result 146361 states and 212639 transitions. [2021-12-06 21:40:08,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:40:08,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 125 [2021-12-06 21:40:08,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:40:09,272 INFO L225 Difference]: With dead ends: 146361 [2021-12-06 21:40:09,272 INFO L226 Difference]: Without dead ends: 116544 [2021-12-06 21:40:09,298 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 21:40:09,299 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 263 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:40:09,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 1130 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:40:09,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116544 states. [2021-12-06 21:40:14,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116544 to 116542. [2021-12-06 21:40:14,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116542 states, 116541 states have (on average 1.4427283102084245) internal successors, (168137), 116541 states have internal predecessors, (168137), 0 states have call successors, (0), 0 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 21:40:14,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116542 states to 116542 states and 168137 transitions. [2021-12-06 21:40:14,588 INFO L78 Accepts]: Start accepts. Automaton has 116542 states and 168137 transitions. Word has length 125 [2021-12-06 21:40:14,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:40:14,588 INFO L470 AbstractCegarLoop]: Abstraction has 116542 states and 168137 transitions. [2021-12-06 21:40:14,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 21:40:14,588 INFO L276 IsEmpty]: Start isEmpty. Operand 116542 states and 168137 transitions. [2021-12-06 21:40:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 21:40:14,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:40:14,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:40:14,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 21:40:14,731 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:40:14,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:40:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash 2035168963, now seen corresponding path program 1 times [2021-12-06 21:40:14,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:40:14,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773251155] [2021-12-06 21:40:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:40:14,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:40:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:40:14,791 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 21:40:14,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:40:14,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773251155] [2021-12-06 21:40:14,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773251155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:40:14,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:40:14,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:40:14,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743146193] [2021-12-06 21:40:14,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:40:14,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:40:14,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:40:14,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:40:14,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:40:14,792 INFO L87 Difference]: Start difference. First operand 116542 states and 168137 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 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 21:40:24,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:40:24,734 INFO L93 Difference]: Finished difference Result 322975 states and 465925 transitions. [2021-12-06 21:40:24,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:40:24,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 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 127 [2021-12-06 21:40:24,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:40:25,115 INFO L225 Difference]: With dead ends: 322975 [2021-12-06 21:40:25,115 INFO L226 Difference]: Without dead ends: 206477 [2021-12-06 21:40:25,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:40:25,201 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 1836 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:40:25,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1836 Valid, 434 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 21:40:25,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206477 states. [2021-12-06 21:40:35,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206477 to 206475. [2021-12-06 21:40:35,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206475 states, 206474 states have (on average 1.437527243139572) internal successors, (296812), 206474 states have internal predecessors, (296812), 0 states have call successors, (0), 0 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 21:40:36,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206475 states to 206475 states and 296812 transitions. [2021-12-06 21:40:36,112 INFO L78 Accepts]: Start accepts. Automaton has 206475 states and 296812 transitions. Word has length 127 [2021-12-06 21:40:36,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:40:36,113 INFO L470 AbstractCegarLoop]: Abstraction has 206475 states and 296812 transitions. [2021-12-06 21:40:36,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 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 21:40:36,113 INFO L276 IsEmpty]: Start isEmpty. Operand 206475 states and 296812 transitions. [2021-12-06 21:40:36,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 21:40:36,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:40:36,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:40:36,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 21:40:36,298 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:40:36,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:40:36,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1408195571, now seen corresponding path program 1 times [2021-12-06 21:40:36,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:40:36,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96190950] [2021-12-06 21:40:36,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:40:36,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:40:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:40:36,353 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 21:40:36,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:40:36,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96190950] [2021-12-06 21:40:36,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96190950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:40:36,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:40:36,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:40:36,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976050865] [2021-12-06 21:40:36,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:40:36,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:40:36,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:40:36,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:40:36,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:40:36,355 INFO L87 Difference]: Start difference. First operand 206475 states and 296812 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 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 21:40:45,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:40:45,491 INFO L93 Difference]: Finished difference Result 375535 states and 539822 transitions. [2021-12-06 21:40:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:40:45,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 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 127 [2021-12-06 21:40:45,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:40:45,789 INFO L225 Difference]: With dead ends: 375535 [2021-12-06 21:40:45,790 INFO L226 Difference]: Without dead ends: 192500 [2021-12-06 21:40:45,903 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 21:40:45,904 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 205 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 747 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 21:40:45,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 747 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:40:46,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192500 states. [2021-12-06 21:40:55,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192500 to 192498. [2021-12-06 21:40:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192498 states, 192497 states have (on average 1.4275547151384178) internal successors, (274800), 192497 states have internal predecessors, (274800), 0 states have call successors, (0), 0 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 21:40:56,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192498 states to 192498 states and 274800 transitions. [2021-12-06 21:40:56,270 INFO L78 Accepts]: Start accepts. Automaton has 192498 states and 274800 transitions. Word has length 127 [2021-12-06 21:40:56,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:40:56,270 INFO L470 AbstractCegarLoop]: Abstraction has 192498 states and 274800 transitions. [2021-12-06 21:40:56,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 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 21:40:56,270 INFO L276 IsEmpty]: Start isEmpty. Operand 192498 states and 274800 transitions. [2021-12-06 21:40:56,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 21:40:56,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:40:56,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:40:56,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 21:40:56,376 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:40:56,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:40:56,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1680642543, now seen corresponding path program 1 times [2021-12-06 21:40:56,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:40:56,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560075284] [2021-12-06 21:40:56,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:40:56,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:40:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:40:56,422 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 21:40:56,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:40:56,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560075284] [2021-12-06 21:40:56,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560075284] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:40:56,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:40:56,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:40:56,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208910735] [2021-12-06 21:40:56,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:40:56,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:40:56,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:40:56,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:40:56,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:40:56,424 INFO L87 Difference]: Start difference. First operand 192498 states and 274800 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 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 21:41:01,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:01,669 INFO L93 Difference]: Finished difference Result 277030 states and 395330 transitions. [2021-12-06 21:41:01,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:41:01,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 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 127 [2021-12-06 21:41:01,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:01,808 INFO L225 Difference]: With dead ends: 277030 [2021-12-06 21:41:01,808 INFO L226 Difference]: Without dead ends: 97298 [2021-12-06 21:41:01,924 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 21:41:01,924 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 180 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 710 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 21:41:01,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 710 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:41:01,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97298 states. [2021-12-06 21:41:06,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97298 to 97296. [2021-12-06 21:41:06,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97296 states, 97295 states have (on average 1.4173184644637442) internal successors, (137898), 97295 states have internal predecessors, (137898), 0 states have call successors, (0), 0 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 21:41:06,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97296 states to 97296 states and 137898 transitions. [2021-12-06 21:41:06,974 INFO L78 Accepts]: Start accepts. Automaton has 97296 states and 137898 transitions. Word has length 127 [2021-12-06 21:41:06,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:06,975 INFO L470 AbstractCegarLoop]: Abstraction has 97296 states and 137898 transitions. [2021-12-06 21:41:06,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 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 21:41:06,975 INFO L276 IsEmpty]: Start isEmpty. Operand 97296 states and 137898 transitions. [2021-12-06 21:41:07,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 21:41:07,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:07,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:07,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 21:41:07,029 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:07,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:07,030 INFO L85 PathProgramCache]: Analyzing trace with hash -44063175, now seen corresponding path program 1 times [2021-12-06 21:41:07,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:07,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235512743] [2021-12-06 21:41:07,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:07,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:41:07,070 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 21:41:07,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:07,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235512743] [2021-12-06 21:41:07,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235512743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:41:07,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:41:07,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:41:07,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899326223] [2021-12-06 21:41:07,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:41:07,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:41:07,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:07,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:41:07,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:41:07,071 INFO L87 Difference]: Start difference. First operand 97296 states and 137898 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 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 21:41:09,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:09,713 INFO L93 Difference]: Finished difference Result 139564 states and 197676 transitions. [2021-12-06 21:41:09,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:41:09,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 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 127 [2021-12-06 21:41:09,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:09,780 INFO L225 Difference]: With dead ends: 139564 [2021-12-06 21:41:09,780 INFO L226 Difference]: Without dead ends: 49866 [2021-12-06 21:41:09,836 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 21:41:09,837 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 166 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 692 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 21:41:09,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 692 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:41:09,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49866 states. [2021-12-06 21:41:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49866 to 49864. [2021-12-06 21:41:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49864 states, 49863 states have (on average 1.4058119246736056) internal successors, (70098), 49863 states have internal predecessors, (70098), 0 states have call successors, (0), 0 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 21:41:12,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49864 states to 49864 states and 70098 transitions. [2021-12-06 21:41:12,474 INFO L78 Accepts]: Start accepts. Automaton has 49864 states and 70098 transitions. Word has length 127 [2021-12-06 21:41:12,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:12,474 INFO L470 AbstractCegarLoop]: Abstraction has 49864 states and 70098 transitions. [2021-12-06 21:41:12,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 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 21:41:12,474 INFO L276 IsEmpty]: Start isEmpty. Operand 49864 states and 70098 transitions. [2021-12-06 21:41:12,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 21:41:12,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:12,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:12,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 21:41:12,502 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:12,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:12,503 INFO L85 PathProgramCache]: Analyzing trace with hash 172528685, now seen corresponding path program 1 times [2021-12-06 21:41:12,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:12,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139100502] [2021-12-06 21:41:12,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:12,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:41:12,542 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 21:41:12,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:12,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139100502] [2021-12-06 21:41:12,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139100502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:41:12,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:41:12,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:41:12,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079131833] [2021-12-06 21:41:12,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:41:12,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:41:12,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:12,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:41:12,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:41:12,544 INFO L87 Difference]: Start difference. First operand 49864 states and 70098 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 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 21:41:13,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:13,873 INFO L93 Difference]: Finished difference Result 71000 states and 99744 transitions. [2021-12-06 21:41:13,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:41:13,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 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 127 [2021-12-06 21:41:13,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:13,907 INFO L225 Difference]: With dead ends: 71000 [2021-12-06 21:41:13,907 INFO L226 Difference]: Without dead ends: 26536 [2021-12-06 21:41:13,937 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 21:41:13,938 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 141 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 655 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 21:41:13,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 655 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:41:13,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26536 states. [2021-12-06 21:41:15,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26536 to 26534. [2021-12-06 21:41:15,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26534 states, 26533 states have (on average 1.3932838352240606) internal successors, (36968), 26533 states have internal predecessors, (36968), 0 states have call successors, (0), 0 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 21:41:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26534 states to 26534 states and 36968 transitions. [2021-12-06 21:41:15,418 INFO L78 Accepts]: Start accepts. Automaton has 26534 states and 36968 transitions. Word has length 127 [2021-12-06 21:41:15,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:15,418 INFO L470 AbstractCegarLoop]: Abstraction has 26534 states and 36968 transitions. [2021-12-06 21:41:15,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 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 21:41:15,418 INFO L276 IsEmpty]: Start isEmpty. Operand 26534 states and 36968 transitions. [2021-12-06 21:41:15,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 21:41:15,431 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:15,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:15,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 21:41:15,432 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:15,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:15,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1264776567, now seen corresponding path program 1 times [2021-12-06 21:41:15,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:15,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452381351] [2021-12-06 21:41:15,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:15,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:41:15,497 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 21:41:15,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:15,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452381351] [2021-12-06 21:41:15,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452381351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:41:15,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:41:15,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:41:15,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427325590] [2021-12-06 21:41:15,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:41:15,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:41:15,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:15,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:41:15,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:41:15,499 INFO L87 Difference]: Start difference. First operand 26534 states and 36968 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 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 21:41:17,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:17,956 INFO L93 Difference]: Finished difference Result 48644 states and 67345 transitions. [2021-12-06 21:41:17,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:41:17,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 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 127 [2021-12-06 21:41:17,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:18,016 INFO L225 Difference]: With dead ends: 48644 [2021-12-06 21:41:18,016 INFO L226 Difference]: Without dead ends: 48642 [2021-12-06 21:41:18,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:41:18,031 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 684 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:18,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 1730 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:41:18,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48642 states. [2021-12-06 21:41:19,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48642 to 27510. [2021-12-06 21:41:19,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27510 states, 27509 states have (on average 1.3793304009596858) internal successors, (37944), 27509 states have internal predecessors, (37944), 0 states have call successors, (0), 0 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 21:41:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27510 states to 27510 states and 37944 transitions. [2021-12-06 21:41:19,870 INFO L78 Accepts]: Start accepts. Automaton has 27510 states and 37944 transitions. Word has length 127 [2021-12-06 21:41:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:19,871 INFO L470 AbstractCegarLoop]: Abstraction has 27510 states and 37944 transitions. [2021-12-06 21:41:19,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 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 21:41:19,871 INFO L276 IsEmpty]: Start isEmpty. Operand 27510 states and 37944 transitions. [2021-12-06 21:41:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-06 21:41:19,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:19,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:19,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 21:41:19,886 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:19,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:19,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1384750876, now seen corresponding path program 1 times [2021-12-06 21:41:19,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:19,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695075786] [2021-12-06 21:41:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:19,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:41:19,951 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 21:41:19,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:19,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695075786] [2021-12-06 21:41:19,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695075786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:41:19,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:41:19,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:41:19,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587436112] [2021-12-06 21:41:19,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:41:19,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:41:19,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:19,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:41:19,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:41:19,953 INFO L87 Difference]: Start difference. First operand 27510 states and 37944 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 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 21:41:22,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:22,950 INFO L93 Difference]: Finished difference Result 52582 states and 72744 transitions. [2021-12-06 21:41:22,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:41:22,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 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 128 [2021-12-06 21:41:22,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:23,000 INFO L225 Difference]: With dead ends: 52582 [2021-12-06 21:41:23,000 INFO L226 Difference]: Without dead ends: 46870 [2021-12-06 21:41:23,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:41:23,012 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 2101 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2101 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:23,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2101 Valid, 2482 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:41:23,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46870 states. [2021-12-06 21:41:25,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46870 to 33549. [2021-12-06 21:41:25,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33549 states, 33548 states have (on average 1.3772206987003697) internal successors, (46203), 33548 states have internal predecessors, (46203), 0 states have call successors, (0), 0 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 21:41:25,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33549 states to 33549 states and 46203 transitions. [2021-12-06 21:41:25,368 INFO L78 Accepts]: Start accepts. Automaton has 33549 states and 46203 transitions. Word has length 128 [2021-12-06 21:41:25,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:25,368 INFO L470 AbstractCegarLoop]: Abstraction has 33549 states and 46203 transitions. [2021-12-06 21:41:25,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 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 21:41:25,368 INFO L276 IsEmpty]: Start isEmpty. Operand 33549 states and 46203 transitions. [2021-12-06 21:41:25,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-06 21:41:25,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:25,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:25,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 21:41:25,383 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:25,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:25,384 INFO L85 PathProgramCache]: Analyzing trace with hash 563941196, now seen corresponding path program 1 times [2021-12-06 21:41:25,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:25,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599387408] [2021-12-06 21:41:25,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:25,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:41:25,422 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 21:41:25,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:25,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599387408] [2021-12-06 21:41:25,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599387408] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:41:25,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:41:25,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:41:25,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239426728] [2021-12-06 21:41:25,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:41:25,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:41:25,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:25,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:41:25,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:41:25,423 INFO L87 Difference]: Start difference. First operand 33549 states and 46203 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 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 21:41:28,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:28,765 INFO L93 Difference]: Finished difference Result 82518 states and 112524 transitions. [2021-12-06 21:41:28,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:41:28,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 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 128 [2021-12-06 21:41:28,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:28,829 INFO L225 Difference]: With dead ends: 82518 [2021-12-06 21:41:28,829 INFO L226 Difference]: Without dead ends: 49526 [2021-12-06 21:41:28,852 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 21:41:28,852 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 216 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:28,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 604 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:41:28,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49526 states. [2021-12-06 21:41:32,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49526 to 48008. [2021-12-06 21:41:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48008 states, 48007 states have (on average 1.3564063574062115) internal successors, (65117), 48007 states have internal predecessors, (65117), 0 states have call successors, (0), 0 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 21:41:32,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48008 states to 48008 states and 65117 transitions. [2021-12-06 21:41:32,384 INFO L78 Accepts]: Start accepts. Automaton has 48008 states and 65117 transitions. Word has length 128 [2021-12-06 21:41:32,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:32,385 INFO L470 AbstractCegarLoop]: Abstraction has 48008 states and 65117 transitions. [2021-12-06 21:41:32,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 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 21:41:32,385 INFO L276 IsEmpty]: Start isEmpty. Operand 48008 states and 65117 transitions. [2021-12-06 21:41:32,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-06 21:41:32,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:32,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:32,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 21:41:32,416 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:32,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:32,416 INFO L85 PathProgramCache]: Analyzing trace with hash 593600719, now seen corresponding path program 1 times [2021-12-06 21:41:32,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:32,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909945174] [2021-12-06 21:41:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:32,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:41:32,478 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 21:41:32,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:32,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909945174] [2021-12-06 21:41:32,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909945174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:41:32,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:41:32,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:41:32,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072869862] [2021-12-06 21:41:32,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:41:32,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:41:32,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:32,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:41:32,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:41:32,480 INFO L87 Difference]: Start difference. First operand 48008 states and 65117 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 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 21:41:38,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:38,106 INFO L93 Difference]: Finished difference Result 85658 states and 116347 transitions. [2021-12-06 21:41:38,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:41:38,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 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 128 [2021-12-06 21:41:38,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:38,202 INFO L225 Difference]: With dead ends: 85658 [2021-12-06 21:41:38,202 INFO L226 Difference]: Without dead ends: 76744 [2021-12-06 21:41:38,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:41:38,223 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 2074 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:38,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2074 Valid, 2278 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:41:38,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76744 states. [2021-12-06 21:41:42,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76744 to 57106. [2021-12-06 21:41:42,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57106 states, 57105 states have (on average 1.353594256194729) internal successors, (77297), 57105 states have internal predecessors, (77297), 0 states have call successors, (0), 0 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 21:41:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57106 states to 57106 states and 77297 transitions. [2021-12-06 21:41:42,814 INFO L78 Accepts]: Start accepts. Automaton has 57106 states and 77297 transitions. Word has length 128 [2021-12-06 21:41:42,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:42,814 INFO L470 AbstractCegarLoop]: Abstraction has 57106 states and 77297 transitions. [2021-12-06 21:41:42,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 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 21:41:42,814 INFO L276 IsEmpty]: Start isEmpty. Operand 57106 states and 77297 transitions. [2021-12-06 21:41:42,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-06 21:41:42,850 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:42,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:42,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 21:41:42,851 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:42,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:42,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1767896909, now seen corresponding path program 1 times [2021-12-06 21:41:42,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:42,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481891990] [2021-12-06 21:41:42,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:42,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:41:42,910 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 21:41:42,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:42,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481891990] [2021-12-06 21:41:42,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481891990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:41:42,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:41:42,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:41:42,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905549533] [2021-12-06 21:41:42,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:41:42,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:41:42,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:42,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:41:42,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:41:42,911 INFO L87 Difference]: Start difference. First operand 57106 states and 77297 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 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 21:41:49,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:41:49,514 INFO L93 Difference]: Finished difference Result 93981 states and 127484 transitions. [2021-12-06 21:41:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:41:49,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 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 128 [2021-12-06 21:41:49,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:41:49,620 INFO L225 Difference]: With dead ends: 93981 [2021-12-06 21:41:49,620 INFO L226 Difference]: Without dead ends: 85067 [2021-12-06 21:41:49,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:41:49,641 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 2202 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2202 SdHoareTripleChecker+Valid, 2216 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:41:49,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2202 Valid, 2216 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:41:49,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85067 states. [2021-12-06 21:41:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85067 to 65830. [2021-12-06 21:41:55,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65830 states, 65829 states have (on average 1.351942153154385) internal successors, (88997), 65829 states have internal predecessors, (88997), 0 states have call successors, (0), 0 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 21:41:55,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65830 states to 65830 states and 88997 transitions. [2021-12-06 21:41:55,271 INFO L78 Accepts]: Start accepts. Automaton has 65830 states and 88997 transitions. Word has length 128 [2021-12-06 21:41:55,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:41:55,272 INFO L470 AbstractCegarLoop]: Abstraction has 65830 states and 88997 transitions. [2021-12-06 21:41:55,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 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 21:41:55,272 INFO L276 IsEmpty]: Start isEmpty. Operand 65830 states and 88997 transitions. [2021-12-06 21:41:55,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-06 21:41:55,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:41:55,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:55,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 21:41:55,311 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:41:55,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:41:55,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1884229063, now seen corresponding path program 1 times [2021-12-06 21:41:55,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:41:55,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279938873] [2021-12-06 21:41:55,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:41:55,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:41:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:41:55,373 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 21:41:55,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:41:55,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279938873] [2021-12-06 21:41:55,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279938873] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:41:55,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:41:55,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:41:55,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878657892] [2021-12-06 21:41:55,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:41:55,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:41:55,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:41:55,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:41:55,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:41:55,375 INFO L87 Difference]: Start difference. First operand 65830 states and 88997 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 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 21:42:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:42:02,870 INFO L93 Difference]: Finished difference Result 100863 states and 136586 transitions. [2021-12-06 21:42:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:42:02,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 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 128 [2021-12-06 21:42:02,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:42:02,989 INFO L225 Difference]: With dead ends: 100863 [2021-12-06 21:42:02,989 INFO L226 Difference]: Without dead ends: 91949 [2021-12-06 21:42:03,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:42:03,016 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 2397 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2397 SdHoareTripleChecker+Valid, 2260 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:42:03,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2397 Valid, 2260 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:42:03,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91949 states. [2021-12-06 21:42:09,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91949 to 74692. [2021-12-06 21:42:09,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74692 states, 74691 states have (on average 1.349948454298376) internal successors, (100829), 74691 states have internal predecessors, (100829), 0 states have call successors, (0), 0 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 21:42:09,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74692 states to 74692 states and 100829 transitions. [2021-12-06 21:42:09,582 INFO L78 Accepts]: Start accepts. Automaton has 74692 states and 100829 transitions. Word has length 128 [2021-12-06 21:42:09,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:42:09,583 INFO L470 AbstractCegarLoop]: Abstraction has 74692 states and 100829 transitions. [2021-12-06 21:42:09,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 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 21:42:09,583 INFO L276 IsEmpty]: Start isEmpty. Operand 74692 states and 100829 transitions. [2021-12-06 21:42:09,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-06 21:42:09,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:42:09,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:42:09,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 21:42:09,626 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:42:09,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:42:09,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1711805346, now seen corresponding path program 1 times [2021-12-06 21:42:09,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:42:09,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589754873] [2021-12-06 21:42:09,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:42:09,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:42:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:42:09,683 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 21:42:09,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:42:09,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589754873] [2021-12-06 21:42:09,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589754873] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:42:09,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:42:09,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:42:09,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730113162] [2021-12-06 21:42:09,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:42:09,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:42:09,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:42:09,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:42:09,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:42:09,684 INFO L87 Difference]: Start difference. First operand 74692 states and 100829 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 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 21:42:17,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:42:17,813 INFO L93 Difference]: Finished difference Result 105487 states and 142602 transitions. [2021-12-06 21:42:17,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:42:17,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 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 128 [2021-12-06 21:42:17,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:42:17,937 INFO L225 Difference]: With dead ends: 105487 [2021-12-06 21:42:17,937 INFO L226 Difference]: Without dead ends: 96573 [2021-12-06 21:42:17,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:42:17,963 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 2167 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2167 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:42:17,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2167 Valid, 2475 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:42:18,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96573 states. [2021-12-06 21:42:25,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96573 to 83338. [2021-12-06 21:42:25,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83338 states, 83337 states have (on average 1.3482006791701164) internal successors, (112355), 83337 states have internal predecessors, (112355), 0 states have call successors, (0), 0 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 21:42:25,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83338 states to 83338 states and 112355 transitions. [2021-12-06 21:42:25,452 INFO L78 Accepts]: Start accepts. Automaton has 83338 states and 112355 transitions. Word has length 128 [2021-12-06 21:42:25,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:42:25,452 INFO L470 AbstractCegarLoop]: Abstraction has 83338 states and 112355 transitions. [2021-12-06 21:42:25,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 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 21:42:25,452 INFO L276 IsEmpty]: Start isEmpty. Operand 83338 states and 112355 transitions. [2021-12-06 21:42:25,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-06 21:42:25,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:42:25,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:42:25,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 21:42:25,502 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:42:25,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:42:25,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2006874039, now seen corresponding path program 1 times [2021-12-06 21:42:25,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:42:25,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618682564] [2021-12-06 21:42:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:42:25,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:42:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:42:25,619 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 21:42:25,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:42:25,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618682564] [2021-12-06 21:42:25,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618682564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:42:25,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:42:25,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:42:25,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901058034] [2021-12-06 21:42:25,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:42:25,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:42:25,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:42:25,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:42:25,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:42:25,620 INFO L87 Difference]: Start difference. First operand 83338 states and 112355 transitions. Second operand has 10 states, 10 states have (on average 12.9) 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 21:42:51,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:42:51,199 INFO L93 Difference]: Finished difference Result 289352 states and 386830 transitions. [2021-12-06 21:42:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 21:42:51,200 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) 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 129 [2021-12-06 21:42:51,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:42:51,622 INFO L225 Difference]: With dead ends: 289352 [2021-12-06 21:42:51,622 INFO L226 Difference]: Without dead ends: 264970 [2021-12-06 21:42:51,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2021-12-06 21:42:51,678 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 2289 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2289 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:42:51,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2289 Valid, 2110 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 21:42:51,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264970 states. [2021-12-06 21:43:01,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264970 to 83854. [2021-12-06 21:43:01,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83854 states, 83853 states have (on average 1.347703719604546) internal successors, (113009), 83853 states have internal predecessors, (113009), 0 states have call successors, (0), 0 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 21:43:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83854 states to 83854 states and 113009 transitions. [2021-12-06 21:43:01,866 INFO L78 Accepts]: Start accepts. Automaton has 83854 states and 113009 transitions. Word has length 129 [2021-12-06 21:43:01,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:43:01,867 INFO L470 AbstractCegarLoop]: Abstraction has 83854 states and 113009 transitions. [2021-12-06 21:43:01,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) 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 21:43:01,867 INFO L276 IsEmpty]: Start isEmpty. Operand 83854 states and 113009 transitions. [2021-12-06 21:43:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-06 21:43:01,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:43:01,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:43:01,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 21:43:01,924 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:43:01,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:43:01,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1451852649, now seen corresponding path program 1 times [2021-12-06 21:43:01,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:43:01,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562091349] [2021-12-06 21:43:01,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:43:01,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:43:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:43:01,973 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 21:43:01,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:43:01,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562091349] [2021-12-06 21:43:01,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562091349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:43:01,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:43:01,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:43:01,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130803174] [2021-12-06 21:43:01,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:43:01,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:43:01,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:43:01,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:43:01,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:43:01,975 INFO L87 Difference]: Start difference. First operand 83854 states and 113009 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 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 21:43:19,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:43:19,101 INFO L93 Difference]: Finished difference Result 242987 states and 327392 transitions. [2021-12-06 21:43:19,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:43:19,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 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 129 [2021-12-06 21:43:19,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:43:19,329 INFO L225 Difference]: With dead ends: 242987 [2021-12-06 21:43:19,329 INFO L226 Difference]: Without dead ends: 159209 [2021-12-06 21:43:19,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:43:19,389 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 1471 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:43:19,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1471 Valid, 365 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 21:43:19,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159209 states. [2021-12-06 21:43:36,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159209 to 159207. [2021-12-06 21:43:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159207 states, 159206 states have (on average 1.3403138072685703) internal successors, (213386), 159206 states have internal predecessors, (213386), 0 states have call successors, (0), 0 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 21:43:36,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159207 states to 159207 states and 213386 transitions. [2021-12-06 21:43:36,765 INFO L78 Accepts]: Start accepts. Automaton has 159207 states and 213386 transitions. Word has length 129 [2021-12-06 21:43:36,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:43:36,765 INFO L470 AbstractCegarLoop]: Abstraction has 159207 states and 213386 transitions. [2021-12-06 21:43:36,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 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 21:43:36,765 INFO L276 IsEmpty]: Start isEmpty. Operand 159207 states and 213386 transitions. [2021-12-06 21:43:36,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-06 21:43:36,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:43:36,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:43:36,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 21:43:36,956 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:43:36,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:43:36,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2046730167, now seen corresponding path program 1 times [2021-12-06 21:43:36,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:43:36,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605048992] [2021-12-06 21:43:36,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:43:36,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:43:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:43:37,020 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 21:43:37,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:43:37,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605048992] [2021-12-06 21:43:37,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605048992] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:43:37,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:43:37,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:43:37,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025896925] [2021-12-06 21:43:37,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:43:37,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:43:37,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:43:37,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:43:37,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:43:37,021 INFO L87 Difference]: Start difference. First operand 159207 states and 213386 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 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 21:43:59,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:43:59,598 INFO L93 Difference]: Finished difference Result 354327 states and 472277 transitions. [2021-12-06 21:43:59,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 21:43:59,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 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 129 [2021-12-06 21:43:59,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:43:59,937 INFO L225 Difference]: With dead ends: 354327 [2021-12-06 21:43:59,938 INFO L226 Difference]: Without dead ends: 205477 [2021-12-06 21:44:00,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:44:00,044 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 365 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:44:00,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 706 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:44:00,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205477 states. [2021-12-06 21:44:17,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205477 to 157695. [2021-12-06 21:44:17,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157695 states, 157694 states have (on average 1.3380471038847388) internal successors, (211002), 157694 states have internal predecessors, (211002), 0 states have call successors, (0), 0 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 21:44:18,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157695 states to 157695 states and 211002 transitions. [2021-12-06 21:44:18,270 INFO L78 Accepts]: Start accepts. Automaton has 157695 states and 211002 transitions. Word has length 129 [2021-12-06 21:44:18,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:44:18,271 INFO L470 AbstractCegarLoop]: Abstraction has 157695 states and 211002 transitions. [2021-12-06 21:44:18,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 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 21:44:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand 157695 states and 211002 transitions. [2021-12-06 21:44:18,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 21:44:18,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:44:18,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:18,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 21:44:18,314 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:44:18,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:44:18,315 INFO L85 PathProgramCache]: Analyzing trace with hash 545246999, now seen corresponding path program 1 times [2021-12-06 21:44:18,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:44:18,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562471353] [2021-12-06 21:44:18,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:44:18,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:44:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:44:18,346 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 21:44:18,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:44:18,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562471353] [2021-12-06 21:44:18,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562471353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:44:18,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:44:18,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:44:18,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976393838] [2021-12-06 21:44:18,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:44:18,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:44:18,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:44:18,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:44:18,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:44:18,347 INFO L87 Difference]: Start difference. First operand 157695 states and 211002 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 21:44:35,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:44:35,529 INFO L93 Difference]: Finished difference Result 241298 states and 322289 transitions. [2021-12-06 21:44:35,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:44:35,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-12-06 21:44:35,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:44:35,756 INFO L225 Difference]: With dead ends: 241298 [2021-12-06 21:44:35,756 INFO L226 Difference]: Without dead ends: 157697 [2021-12-06 21:44:35,823 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 21:44:35,823 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 202 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:44:35,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 709 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:44:35,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157697 states. [2021-12-06 21:44:53,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157697 to 157695. [2021-12-06 21:44:53,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157695 states, 157694 states have (on average 1.3289154945654242) internal successors, (209562), 157694 states have internal predecessors, (209562), 0 states have call successors, (0), 0 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 21:44:53,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157695 states to 157695 states and 209562 transitions. [2021-12-06 21:44:53,901 INFO L78 Accepts]: Start accepts. Automaton has 157695 states and 209562 transitions. Word has length 132 [2021-12-06 21:44:53,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:44:53,901 INFO L470 AbstractCegarLoop]: Abstraction has 157695 states and 209562 transitions. [2021-12-06 21:44:53,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 21:44:53,901 INFO L276 IsEmpty]: Start isEmpty. Operand 157695 states and 209562 transitions. [2021-12-06 21:44:54,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-06 21:44:54,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:44:54,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:54,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 21:44:54,038 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:44:54,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:44:54,038 INFO L85 PathProgramCache]: Analyzing trace with hash -118684994, now seen corresponding path program 1 times [2021-12-06 21:44:54,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:44:54,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972930714] [2021-12-06 21:44:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:44:54,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:44:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:44:54,066 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 21:44:54,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:44:54,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972930714] [2021-12-06 21:44:54,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972930714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:44:54,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:44:54,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:44:54,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124277051] [2021-12-06 21:44:54,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:44:54,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:44:54,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:44:54,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:44:54,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:44:54,068 INFO L87 Difference]: Start difference. First operand 157695 states and 209562 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 21:45:07,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:45:07,262 INFO L93 Difference]: Finished difference Result 202847 states and 268948 transitions. [2021-12-06 21:45:07,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:45:07,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-12-06 21:45:07,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:45:07,427 INFO L225 Difference]: With dead ends: 202847 [2021-12-06 21:45:07,427 INFO L226 Difference]: Without dead ends: 116449 [2021-12-06 21:45:07,496 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 21:45:07,496 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 257 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:45:07,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 830 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:45:07,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116449 states. [2021-12-06 21:45:20,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116449 to 116219. [2021-12-06 21:45:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116219 states, 116218 states have (on average 1.3172142008983119) internal successors, (153084), 116218 states have internal predecessors, (153084), 0 states have call successors, (0), 0 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 21:45:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116219 states to 116219 states and 153084 transitions. [2021-12-06 21:45:21,092 INFO L78 Accepts]: Start accepts. Automaton has 116219 states and 153084 transitions. Word has length 133 [2021-12-06 21:45:21,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:45:21,093 INFO L470 AbstractCegarLoop]: Abstraction has 116219 states and 153084 transitions. [2021-12-06 21:45:21,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 21:45:21,093 INFO L276 IsEmpty]: Start isEmpty. Operand 116219 states and 153084 transitions. [2021-12-06 21:45:21,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-06 21:45:21,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:45:21,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:21,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 21:45:21,135 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:45:21,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:45:21,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1121685506, now seen corresponding path program 1 times [2021-12-06 21:45:21,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:45:21,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556805521] [2021-12-06 21:45:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:45:21,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:45:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:21,165 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 21:45:21,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:45:21,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556805521] [2021-12-06 21:45:21,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556805521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:45:21,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:45:21,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:45:21,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357978077] [2021-12-06 21:45:21,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:45:21,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:45:21,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:45:21,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:45:21,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:45:21,166 INFO L87 Difference]: Start difference. First operand 116219 states and 153084 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 21:45:31,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:45:31,221 INFO L93 Difference]: Finished difference Result 150453 states and 197750 transitions. [2021-12-06 21:45:31,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:45:31,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-12-06 21:45:31,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:45:31,329 INFO L225 Difference]: With dead ends: 150453 [2021-12-06 21:45:31,329 INFO L226 Difference]: Without dead ends: 86043 [2021-12-06 21:45:31,363 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 21:45:31,364 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 273 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:45:31,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 727 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:45:31,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86043 states. [2021-12-06 21:45:41,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86043 to 85879. [2021-12-06 21:45:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85879 states, 85878 states have (on average 1.3058874216912364) internal successors, (112147), 85878 states have internal predecessors, (112147), 0 states have call successors, (0), 0 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 21:45:41,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85879 states to 85879 states and 112147 transitions. [2021-12-06 21:45:41,492 INFO L78 Accepts]: Start accepts. Automaton has 85879 states and 112147 transitions. Word has length 133 [2021-12-06 21:45:41,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:45:41,492 INFO L470 AbstractCegarLoop]: Abstraction has 85879 states and 112147 transitions. [2021-12-06 21:45:41,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 21:45:41,492 INFO L276 IsEmpty]: Start isEmpty. Operand 85879 states and 112147 transitions. [2021-12-06 21:45:41,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-06 21:45:41,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:45:41,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:41,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 21:45:41,528 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:45:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:45:41,529 INFO L85 PathProgramCache]: Analyzing trace with hash 188018548, now seen corresponding path program 1 times [2021-12-06 21:45:41,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:45:41,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416509294] [2021-12-06 21:45:41,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:45:41,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:45:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:45:41,567 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 21:45:41,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:45:41,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416509294] [2021-12-06 21:45:41,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416509294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:45:41,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:45:41,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:45:41,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935150215] [2021-12-06 21:45:41,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:45:41,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:45:41,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:45:41,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:45:41,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:45:41,569 INFO L87 Difference]: Start difference. First operand 85879 states and 112147 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 21:45:51,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:45:51,633 INFO L93 Difference]: Finished difference Result 132094 states and 172114 transitions. [2021-12-06 21:45:51,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:45:51,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-12-06 21:45:51,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:45:51,740 INFO L225 Difference]: With dead ends: 132094 [2021-12-06 21:45:51,740 INFO L226 Difference]: Without dead ends: 85881 [2021-12-06 21:45:51,769 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 21:45:51,770 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 220 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:45:51,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 719 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:45:51,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85881 states. [2021-12-06 21:46:01,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85881 to 85879. [2021-12-06 21:46:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85879 states, 85878 states have (on average 1.2963622813759053) internal successors, (111329), 85878 states have internal predecessors, (111329), 0 states have call successors, (0), 0 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 21:46:01,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85879 states to 85879 states and 111329 transitions. [2021-12-06 21:46:01,978 INFO L78 Accepts]: Start accepts. Automaton has 85879 states and 111329 transitions. Word has length 133 [2021-12-06 21:46:01,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:46:01,979 INFO L470 AbstractCegarLoop]: Abstraction has 85879 states and 111329 transitions. [2021-12-06 21:46:01,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 21:46:01,979 INFO L276 IsEmpty]: Start isEmpty. Operand 85879 states and 111329 transitions. [2021-12-06 21:46:02,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-06 21:46:02,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:46:02,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:02,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-06 21:46:02,012 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:46:02,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:46:02,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1149183581, now seen corresponding path program 1 times [2021-12-06 21:46:02,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:46:02,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085456368] [2021-12-06 21:46:02,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:46:02,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:46:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:46:02,040 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 21:46:02,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:46:02,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085456368] [2021-12-06 21:46:02,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085456368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:46:02,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:46:02,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:46:02,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788490245] [2021-12-06 21:46:02,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:46:02,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:46:02,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:46:02,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:46:02,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:46:02,042 INFO L87 Difference]: Start difference. First operand 85879 states and 111329 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 21:46:12,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:46:12,075 INFO L93 Difference]: Finished difference Result 130730 states and 169045 transitions. [2021-12-06 21:46:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:46:12,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-12-06 21:46:12,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:46:12,183 INFO L225 Difference]: With dead ends: 130730 [2021-12-06 21:46:12,183 INFO L226 Difference]: Without dead ends: 85881 [2021-12-06 21:46:12,212 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 21:46:12,213 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 202 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:46:12,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 714 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:46:12,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85881 states. [2021-12-06 21:46:22,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85881 to 85879. [2021-12-06 21:46:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85879 states, 85878 states have (on average 1.2862316309182795) internal successors, (110459), 85878 states have internal predecessors, (110459), 0 states have call successors, (0), 0 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 21:46:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85879 states to 85879 states and 110459 transitions. [2021-12-06 21:46:22,679 INFO L78 Accepts]: Start accepts. Automaton has 85879 states and 110459 transitions. Word has length 133 [2021-12-06 21:46:22,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:46:22,679 INFO L470 AbstractCegarLoop]: Abstraction has 85879 states and 110459 transitions. [2021-12-06 21:46:22,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 21:46:22,679 INFO L276 IsEmpty]: Start isEmpty. Operand 85879 states and 110459 transitions. [2021-12-06 21:46:22,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-06 21:46:22,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:46:22,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:22,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-06 21:46:22,713 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:46:22,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:46:22,713 INFO L85 PathProgramCache]: Analyzing trace with hash -984906288, now seen corresponding path program 1 times [2021-12-06 21:46:22,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:46:22,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400880278] [2021-12-06 21:46:22,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:46:22,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:46:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:46:22,758 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 21:46:22,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:46:22,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400880278] [2021-12-06 21:46:22,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400880278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:46:22,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:46:22,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:46:22,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47165866] [2021-12-06 21:46:22,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:46:22,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:46:22,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:46:22,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:46:22,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:46:22,759 INFO L87 Difference]: Start difference. First operand 85879 states and 110459 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 21:46:44,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:46:44,357 INFO L93 Difference]: Finished difference Result 188124 states and 241236 transitions. [2021-12-06 21:46:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:46:44,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2021-12-06 21:46:44,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:46:44,591 INFO L225 Difference]: With dead ends: 188124 [2021-12-06 21:46:44,591 INFO L226 Difference]: Without dead ends: 172429 [2021-12-06 21:46:44,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:46:44,624 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 2517 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2517 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:46:44,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2517 Valid, 504 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 21:46:44,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172429 states. [2021-12-06 21:46:56,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172429 to 86071. [2021-12-06 21:46:56,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86071 states, 86070 states have (on average 1.2857790170791217) internal successors, (110667), 86070 states have internal predecessors, (110667), 0 states have call successors, (0), 0 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 21:46:56,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86071 states to 86071 states and 110667 transitions. [2021-12-06 21:46:56,766 INFO L78 Accepts]: Start accepts. Automaton has 86071 states and 110667 transitions. Word has length 135 [2021-12-06 21:46:56,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:46:56,766 INFO L470 AbstractCegarLoop]: Abstraction has 86071 states and 110667 transitions. [2021-12-06 21:46:56,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 21:46:56,766 INFO L276 IsEmpty]: Start isEmpty. Operand 86071 states and 110667 transitions. [2021-12-06 21:46:56,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-06 21:46:56,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:46:56,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:56,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-06 21:46:56,800 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:46:56,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:46:56,801 INFO L85 PathProgramCache]: Analyzing trace with hash -2064524235, now seen corresponding path program 1 times [2021-12-06 21:46:56,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:46:56,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612087849] [2021-12-06 21:46:56,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:46:56,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:46:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:46:56,832 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 21:46:56,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:46:56,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612087849] [2021-12-06 21:46:56,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612087849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:46:56,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:46:56,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:46:56,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706855390] [2021-12-06 21:46:56,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:46:56,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:46:56,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:46:56,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:46:56,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:46:56,833 INFO L87 Difference]: Start difference. First operand 86071 states and 110667 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 21:47:19,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:47:19,229 INFO L93 Difference]: Finished difference Result 250118 states and 320957 transitions. [2021-12-06 21:47:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:47:19,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2021-12-06 21:47:19,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:47:19,473 INFO L225 Difference]: With dead ends: 250118 [2021-12-06 21:47:19,473 INFO L226 Difference]: Without dead ends: 171048 [2021-12-06 21:47:19,530 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 21:47:19,530 INFO L933 BasicCegarLoop]: 494 mSDtfsCounter, 200 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:47:19,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 716 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 21:47:19,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171048 states. [2021-12-06 21:47:42,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171048 to 170650. [2021-12-06 21:47:42,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170650 states, 170649 states have (on average 1.276813810804634) internal successors, (217887), 170649 states have internal predecessors, (217887), 0 states have call successors, (0), 0 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 21:47:42,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170650 states to 170650 states and 217887 transitions. [2021-12-06 21:47:42,594 INFO L78 Accepts]: Start accepts. Automaton has 170650 states and 217887 transitions. Word has length 135 [2021-12-06 21:47:42,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:47:42,594 INFO L470 AbstractCegarLoop]: Abstraction has 170650 states and 217887 transitions. [2021-12-06 21:47:42,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 21:47:42,595 INFO L276 IsEmpty]: Start isEmpty. Operand 170650 states and 217887 transitions. [2021-12-06 21:47:42,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-06 21:47:42,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:47:42,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:47:42,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-06 21:47:42,669 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:47:42,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:47:42,670 INFO L85 PathProgramCache]: Analyzing trace with hash 455599098, now seen corresponding path program 1 times [2021-12-06 21:47:42,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:47:42,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487852115] [2021-12-06 21:47:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:47:42,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:47:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:47:42,708 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 21:47:42,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:47:42,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487852115] [2021-12-06 21:47:42,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487852115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:47:42,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:47:42,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:47:42,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64782419] [2021-12-06 21:47:42,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:47:42,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:47:42,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:47:42,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:47:42,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:47:42,709 INFO L87 Difference]: Start difference. First operand 170650 states and 217887 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 21:48:07,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:48:07,030 INFO L93 Difference]: Finished difference Result 340258 states and 434917 transitions. [2021-12-06 21:48:07,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:48:07,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2021-12-06 21:48:07,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:48:07,300 INFO L225 Difference]: With dead ends: 340258 [2021-12-06 21:48:07,300 INFO L226 Difference]: Without dead ends: 176585 [2021-12-06 21:48:07,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:48:07,396 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 1337 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:48:07,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1337 Valid, 344 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 21:48:07,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176585 states. [2021-12-06 21:48:31,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176585 to 176247. [2021-12-06 21:48:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176247 states, 176246 states have (on average 1.2734416667612314) internal successors, (224439), 176246 states have internal predecessors, (224439), 0 states have call successors, (0), 0 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 21:48:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176247 states to 176247 states and 224439 transitions. [2021-12-06 21:48:32,062 INFO L78 Accepts]: Start accepts. Automaton has 176247 states and 224439 transitions. Word has length 135 [2021-12-06 21:48:32,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:48:32,063 INFO L470 AbstractCegarLoop]: Abstraction has 176247 states and 224439 transitions. [2021-12-06 21:48:32,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 21:48:32,063 INFO L276 IsEmpty]: Start isEmpty. Operand 176247 states and 224439 transitions. [2021-12-06 21:48:32,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-06 21:48:32,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:48:32,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:48:32,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-06 21:48:32,111 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:48:32,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:48:32,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1592048806, now seen corresponding path program 1 times [2021-12-06 21:48:32,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:48:32,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465538647] [2021-12-06 21:48:32,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:48:32,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:48:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:48:32,158 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 21:48:32,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:48:32,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465538647] [2021-12-06 21:48:32,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465538647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:48:32,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:48:32,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:48:32,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503547679] [2021-12-06 21:48:32,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:48:32,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:48:32,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:48:32,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:48:32,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:48:32,159 INFO L87 Difference]: Start difference. First operand 176247 states and 224439 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 21:49:29,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:49:29,236 INFO L93 Difference]: Finished difference Result 451587 states and 573232 transitions. [2021-12-06 21:49:29,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:49:29,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2021-12-06 21:49:29,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:49:29,975 INFO L225 Difference]: With dead ends: 451587 [2021-12-06 21:49:29,975 INFO L226 Difference]: Without dead ends: 405969 [2021-12-06 21:49:30,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-12-06 21:49:30,081 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 2775 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2775 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:49:30,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2775 Valid, 710 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:49:30,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405969 states. [2021-12-06 21:49:57,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405969 to 176538. [2021-12-06 21:49:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176538 states, 176537 states have (on average 1.2733647903838856) internal successors, (224796), 176537 states have internal predecessors, (224796), 0 states have call successors, (0), 0 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 21:49:57,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176538 states to 176538 states and 224796 transitions. [2021-12-06 21:49:57,491 INFO L78 Accepts]: Start accepts. Automaton has 176538 states and 224796 transitions. Word has length 135 [2021-12-06 21:49:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:49:57,491 INFO L470 AbstractCegarLoop]: Abstraction has 176538 states and 224796 transitions. [2021-12-06 21:49:57,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 21:49:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 176538 states and 224796 transitions. [2021-12-06 21:49:57,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-06 21:49:57,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:49:57,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:49:57,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-06 21:49:57,538 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:49:57,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:49:57,539 INFO L85 PathProgramCache]: Analyzing trace with hash 105807364, now seen corresponding path program 1 times [2021-12-06 21:49:57,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:49:57,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318987930] [2021-12-06 21:49:57,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:49:57,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:49:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:49:57,574 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 21:49:57,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:49:57,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318987930] [2021-12-06 21:49:57,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318987930] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:49:57,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:49:57,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:49:57,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533562695] [2021-12-06 21:49:57,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:49:57,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:49:57,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:49:57,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:49:57,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:49:57,575 INFO L87 Difference]: Start difference. First operand 176538 states and 224796 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 21:50:33,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:50:33,458 INFO L93 Difference]: Finished difference Result 418334 states and 532424 transitions. [2021-12-06 21:50:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:50:33,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2021-12-06 21:50:33,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:50:33,866 INFO L225 Difference]: With dead ends: 418334 [2021-12-06 21:50:33,867 INFO L226 Difference]: Without dead ends: 242109 [2021-12-06 21:50:33,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:50:33,993 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 1291 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:50:33,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1291 Valid, 347 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 21:50:34,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242109 states. [2021-12-06 21:51:10,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242109 to 241637. [2021-12-06 21:51:10,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241637 states, 241636 states have (on average 1.2627423066099421) internal successors, (305124), 241636 states have internal predecessors, (305124), 0 states have call successors, (0), 0 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 21:51:10,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241637 states to 241637 states and 305124 transitions. [2021-12-06 21:51:10,882 INFO L78 Accepts]: Start accepts. Automaton has 241637 states and 305124 transitions. Word has length 135 [2021-12-06 21:51:10,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:51:10,882 INFO L470 AbstractCegarLoop]: Abstraction has 241637 states and 305124 transitions. [2021-12-06 21:51:10,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 21:51:10,882 INFO L276 IsEmpty]: Start isEmpty. Operand 241637 states and 305124 transitions. [2021-12-06 21:51:10,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-06 21:51:10,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:51:10,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:51:10,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-06 21:51:10,951 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:51:10,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:51:10,952 INFO L85 PathProgramCache]: Analyzing trace with hash -187366748, now seen corresponding path program 1 times [2021-12-06 21:51:10,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:51:10,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466318812] [2021-12-06 21:51:10,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:51:10,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:51:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:51:11,001 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 21:51:11,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:51:11,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466318812] [2021-12-06 21:51:11,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466318812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:51:11,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:51:11,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:51:11,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944917179] [2021-12-06 21:51:11,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:51:11,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:51:11,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:51:11,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:51:11,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:51:11,002 INFO L87 Difference]: Start difference. First operand 241637 states and 305124 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)