./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-1.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_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/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_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/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_f1891f2a-8691-45d1-9850-87a1a45bf436/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 e70b00a4f3ead30bf9fe88f8130a3c8de29ffa3a9165185f8db2f923a85de85c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:54:01,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:54:01,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:54:02,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:54:02,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:54:02,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:54:02,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:54:02,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:54:02,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:54:02,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:54:02,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:54:02,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:54:02,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:54:02,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:54:02,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:54:02,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:54:02,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:54:02,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:54:02,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:54:02,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:54:02,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:54:02,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:54:02,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:54:02,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:54:02,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:54:02,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:54:02,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:54:02,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:54:02,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:54:02,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:54:02,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:54:02,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:54:02,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:54:02,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:54:02,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:54:02,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:54:02,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:54:02,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:54:02,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:54:02,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:54:02,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:54:02,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:54:02,073 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:54:02,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:54:02,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:54:02,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:54:02,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:54:02,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:54:02,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:54:02,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:54:02,075 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:54:02,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:54:02,076 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:54:02,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:54:02,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:54:02,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:54:02,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:54:02,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:54:02,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:54:02,077 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:54:02,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:54:02,077 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:54:02,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:54:02,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:54:02,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:54:02,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:54:02,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:54:02,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:54:02,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:54:02,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:54:02,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:54:02,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:54:02,079 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:54:02,079 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:54:02,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:54:02,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:54:02,079 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_f1891f2a-8691-45d1-9850-87a1a45bf436/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e70b00a4f3ead30bf9fe88f8130a3c8de29ffa3a9165185f8db2f923a85de85c [2021-12-06 23:54:02,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:54:02,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:54:02,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:54:02,281 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:54:02,282 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:54:02,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-1.c [2021-12-06 23:54:02,324 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/data/282b8dcba/124a1da2cdae4680836748b0e3246beb/FLAG9dd49e20a [2021-12-06 23:54:03,018 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:54:03,019 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-1.c [2021-12-06 23:54:03,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/data/282b8dcba/124a1da2cdae4680836748b0e3246beb/FLAG9dd49e20a [2021-12-06 23:54:03,356 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/data/282b8dcba/124a1da2cdae4680836748b0e3246beb [2021-12-06 23:54:03,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:54:03,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:54:03,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:54:03,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:54:03,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:54:03,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:54:03" (1/1) ... [2021-12-06 23:54:03,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1849cfcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:03, skipping insertion in model container [2021-12-06 23:54:03,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:54:03" (1/1) ... [2021-12-06 23:54:03,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:54:03,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:54:04,842 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_f1891f2a-8691-45d1-9850-87a1a45bf436/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-1.c[378560,378573] [2021-12-06 23:54:04,864 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_f1891f2a-8691-45d1-9850-87a1a45bf436/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-1.c[383339,383352] [2021-12-06 23:54:05,059 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:54:05,065 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:54:05,854 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_f1891f2a-8691-45d1-9850-87a1a45bf436/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-1.c[378560,378573] [2021-12-06 23:54:05,861 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_f1891f2a-8691-45d1-9850-87a1a45bf436/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-1.c[383339,383352] [2021-12-06 23:54:05,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:54:05,940 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:54:05,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:05 WrapperNode [2021-12-06 23:54:05,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:54:05,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:54:05,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:54:05,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:54:05,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:05" (1/1) ... [2021-12-06 23:54:06,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:05" (1/1) ... [2021-12-06 23:54:06,293 INFO L137 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12909 [2021-12-06 23:54:06,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:54:06,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:54:06,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:54:06,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:54:06,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:05" (1/1) ... [2021-12-06 23:54:06,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:05" (1/1) ... [2021-12-06 23:54:06,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:05" (1/1) ... [2021-12-06 23:54:06,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:05" (1/1) ... [2021-12-06 23:54:06,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:05" (1/1) ... [2021-12-06 23:54:06,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:05" (1/1) ... [2021-12-06 23:54:06,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:05" (1/1) ... [2021-12-06 23:54:06,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:54:06,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:54:06,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:54:06,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:54:06,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:05" (1/1) ... [2021-12-06 23:54:06,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:54:06,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:54:06,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:54:06,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:54:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:54:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-06 23:54:06,813 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-06 23:54:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-06 23:54:06,813 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-06 23:54:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-06 23:54:06,813 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-06 23:54:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-06 23:54:06,814 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-06 23:54:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-06 23:54:06,814 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-06 23:54:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-06 23:54:06,814 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-06 23:54:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:54:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:54:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:54:06,911 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:54:06,913 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:54:11,122 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:54:11,150 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:54:11,151 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-06 23:54:11,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:54:11 BoogieIcfgContainer [2021-12-06 23:54:11,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:54:11,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:54:11,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:54:11,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:54:11,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:54:03" (1/3) ... [2021-12-06 23:54:11,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b54ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:54:11, skipping insertion in model container [2021-12-06 23:54:11,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:54:05" (2/3) ... [2021-12-06 23:54:11,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b54ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:54:11, skipping insertion in model container [2021-12-06 23:54:11,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:54:11" (3/3) ... [2021-12-06 23:54:11,160 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.07.cil-1.c [2021-12-06 23:54:11,164 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:54:11,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 23:54:11,206 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:54:11,211 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 23:54:11,211 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 23:54:11,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-06 23:54:11,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:54:11,303 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:11,304 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 23:54:11,304 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:11,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:11,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2021-12-06 23:54:11,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:54:11,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725347106] [2021-12-06 23:54:11,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:11,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:54:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:11,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:54:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:54:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:11,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:54:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:11,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:54:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:11,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:54:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:11,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:54:11,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:54:11,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725347106] [2021-12-06 23:54:11,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725347106] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:11,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:11,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:54:11,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559601404] [2021-12-06 23:54:11,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:11,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:54:11,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:54:11,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:54:11,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:54:11,677 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:12,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:12,524 INFO L93 Difference]: Finished difference Result 4955 states and 9127 transitions. [2021-12-06 23:54:12,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:54:12,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-06 23:54:12,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:12,555 INFO L225 Difference]: With dead ends: 4955 [2021-12-06 23:54:12,555 INFO L226 Difference]: Without dead ends: 2460 [2021-12-06 23:54:12,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:54:12,567 INFO L933 BasicCegarLoop]: 4453 mSDtfsCounter, 653 mSDsluCounter, 12350 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 16803 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:12,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 16803 Invalid, 493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 23:54:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-12-06 23:54:12,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2373. [2021-12-06 23:54:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-06 23:54:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2021-12-06 23:54:12,710 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2021-12-06 23:54:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:12,710 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2021-12-06 23:54:12,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:12,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2021-12-06 23:54:12,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:54:12,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:12,716 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 23:54:12,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:54:12,717 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:12,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:12,718 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2021-12-06 23:54:12,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:54:12,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589004441] [2021-12-06 23:54:12,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:12,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:54:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:12,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:54:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:12,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:54:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:12,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:54:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:12,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:54:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:54:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:12,903 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 23:54:12,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:54:12,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589004441] [2021-12-06 23:54:12,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589004441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:12,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:12,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:54:12,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618867189] [2021-12-06 23:54:12,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:12,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:54:12,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:54:12,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:54:12,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:54:12,907 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:14,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:14,244 INFO L93 Difference]: Finished difference Result 3029 states and 5394 transitions. [2021-12-06 23:54:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:54:14,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-06 23:54:14,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:14,258 INFO L225 Difference]: With dead ends: 3029 [2021-12-06 23:54:14,258 INFO L226 Difference]: Without dead ends: 2792 [2021-12-06 23:54:14,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:54:14,261 INFO L933 BasicCegarLoop]: 4416 mSDtfsCounter, 4935 mSDsluCounter, 12550 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 16966 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:14,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 16966 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 23:54:14,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2021-12-06 23:54:14,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2619. [2021-12-06 23:54:14,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8137904168289833) internal successors, (4656), 2570 states have internal predecessors, (4656), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-06 23:54:14,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4733 transitions. [2021-12-06 23:54:14,334 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4733 transitions. Word has length 123 [2021-12-06 23:54:14,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:14,335 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4733 transitions. [2021-12-06 23:54:14,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:14,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4733 transitions. [2021-12-06 23:54:14,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:54:14,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:14,337 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 23:54:14,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:54:14,337 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:14,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:14,338 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2021-12-06 23:54:14,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:54:14,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206837256] [2021-12-06 23:54:14,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:14,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:54:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:14,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:54:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:14,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:54:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:14,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:54:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:14,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:54:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:14,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:54:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:14,452 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 23:54:14,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:54:14,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206837256] [2021-12-06 23:54:14,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206837256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:14,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:14,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:54:14,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490456821] [2021-12-06 23:54:14,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:14,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:54:14,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:54:14,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:54:14,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:54:14,454 INFO L87 Difference]: Start difference. First operand 2619 states and 4733 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:15,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:15,184 INFO L93 Difference]: Finished difference Result 3287 states and 5804 transitions. [2021-12-06 23:54:15,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:54:15,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-06 23:54:15,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:15,198 INFO L225 Difference]: With dead ends: 3287 [2021-12-06 23:54:15,198 INFO L226 Difference]: Without dead ends: 2804 [2021-12-06 23:54:15,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:54:15,201 INFO L933 BasicCegarLoop]: 4371 mSDtfsCounter, 4771 mSDsluCounter, 12358 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 16729 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:15,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4786 Valid, 16729 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 23:54:15,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2021-12-06 23:54:15,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2619. [2021-12-06 23:54:15,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8130112972341255) internal successors, (4654), 2570 states have internal predecessors, (4654), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-06 23:54:15,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4731 transitions. [2021-12-06 23:54:15,265 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4731 transitions. Word has length 123 [2021-12-06 23:54:15,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:15,266 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4731 transitions. [2021-12-06 23:54:15,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:15,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4731 transitions. [2021-12-06 23:54:15,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:54:15,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:15,268 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 23:54:15,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:54:15,268 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:15,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:15,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1460330286, now seen corresponding path program 1 times [2021-12-06 23:54:15,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:54:15,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639030928] [2021-12-06 23:54:15,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:15,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:54:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:15,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:54:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:15,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:54:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:15,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:54:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:15,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:54:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:15,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:54:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:15,373 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 23:54:15,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:54:15,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639030928] [2021-12-06 23:54:15,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639030928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:15,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:15,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:54:15,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673112919] [2021-12-06 23:54:15,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:15,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:54:15,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:54:15,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:54:15,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:54:15,376 INFO L87 Difference]: Start difference. First operand 2619 states and 4731 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:16,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:16,652 INFO L93 Difference]: Finished difference Result 3613 states and 6309 transitions. [2021-12-06 23:54:16,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:54:16,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-06 23:54:16,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:16,665 INFO L225 Difference]: With dead ends: 3613 [2021-12-06 23:54:16,666 INFO L226 Difference]: Without dead ends: 3130 [2021-12-06 23:54:16,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:54:16,668 INFO L933 BasicCegarLoop]: 4601 mSDtfsCounter, 4935 mSDsluCounter, 17116 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 21717 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:16,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 21717 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 23:54:16,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2021-12-06 23:54:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 2848. [2021-12-06 23:54:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2773 states have (on average 1.7922827262892174) internal successors, (4970), 2777 states have internal predecessors, (4970), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2021-12-06 23:54:16,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 5081 transitions. [2021-12-06 23:54:16,743 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 5081 transitions. Word has length 123 [2021-12-06 23:54:16,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:16,744 INFO L470 AbstractCegarLoop]: Abstraction has 2848 states and 5081 transitions. [2021-12-06 23:54:16,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:16,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 5081 transitions. [2021-12-06 23:54:16,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:54:16,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:16,747 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 23:54:16,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 23:54:16,747 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:16,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:16,748 INFO L85 PathProgramCache]: Analyzing trace with hash -573063760, now seen corresponding path program 1 times [2021-12-06 23:54:16,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:54:16,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756807091] [2021-12-06 23:54:16,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:16,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:54:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:16,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:54:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:16,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:54:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:16,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:54:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:16,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:54:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:16,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:54:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:16,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:54:16,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:54:16,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756807091] [2021-12-06 23:54:16,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756807091] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:16,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:16,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:54:16,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005980722] [2021-12-06 23:54:16,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:16,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:54:16,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:54:16,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:54:16,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:54:16,841 INFO L87 Difference]: Start difference. First operand 2848 states and 5081 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:18,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:18,226 INFO L93 Difference]: Finished difference Result 4476 states and 7659 transitions. [2021-12-06 23:54:18,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:54:18,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-06 23:54:18,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:18,244 INFO L225 Difference]: With dead ends: 4476 [2021-12-06 23:54:18,244 INFO L226 Difference]: Without dead ends: 3764 [2021-12-06 23:54:18,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:54:18,247 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 4932 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 21705 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:18,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4946 Valid, 21705 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 23:54:18,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2021-12-06 23:54:18,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3308. [2021-12-06 23:54:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3308 states, 3187 states have (on average 1.7587072481957955) internal successors, (5605), 3193 states have internal predecessors, (5605), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2021-12-06 23:54:18,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 5788 transitions. [2021-12-06 23:54:18,368 INFO L78 Accepts]: Start accepts. Automaton has 3308 states and 5788 transitions. Word has length 123 [2021-12-06 23:54:18,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:18,368 INFO L470 AbstractCegarLoop]: Abstraction has 3308 states and 5788 transitions. [2021-12-06 23:54:18,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3308 states and 5788 transitions. [2021-12-06 23:54:18,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:54:18,371 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:18,372 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 23:54:18,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 23:54:18,372 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:18,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:18,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1855194862, now seen corresponding path program 1 times [2021-12-06 23:54:18,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:54:18,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400357924] [2021-12-06 23:54:18,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:18,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:54:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:18,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:54:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:18,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:54:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:54:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:18,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:54:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:18,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:54:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:18,468 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 23:54:18,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:54:18,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400357924] [2021-12-06 23:54:18,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400357924] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:18,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:18,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:54:18,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618113118] [2021-12-06 23:54:18,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:18,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:54:18,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:54:18,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:54:18,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:54:18,471 INFO L87 Difference]: Start difference. First operand 3308 states and 5788 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:19,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:19,957 INFO L93 Difference]: Finished difference Result 6142 states and 10254 transitions. [2021-12-06 23:54:19,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:54:19,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-06 23:54:19,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:19,980 INFO L225 Difference]: With dead ends: 6142 [2021-12-06 23:54:19,980 INFO L226 Difference]: Without dead ends: 4970 [2021-12-06 23:54:19,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:54:19,985 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 4928 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1926 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4942 SdHoareTripleChecker+Valid, 21701 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:19,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4942 Valid, 21701 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1926 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 23:54:19,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4970 states. [2021-12-06 23:54:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4970 to 4230. [2021-12-06 23:54:20,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4017 states have (on average 1.7119741100323624) internal successors, (6877), 4027 states have internal predecessors, (6877), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-06 23:54:20,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 7210 transitions. [2021-12-06 23:54:20,114 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 7210 transitions. Word has length 123 [2021-12-06 23:54:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:20,115 INFO L470 AbstractCegarLoop]: Abstraction has 4230 states and 7210 transitions. [2021-12-06 23:54:20,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:20,115 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 7210 transitions. [2021-12-06 23:54:20,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:54:20,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:20,117 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, 1, 1, 1, 1, 1] [2021-12-06 23:54:20,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 23:54:20,117 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:20,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:20,118 INFO L85 PathProgramCache]: Analyzing trace with hash 548052464, now seen corresponding path program 1 times [2021-12-06 23:54:20,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:54:20,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106693337] [2021-12-06 23:54:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:20,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:54:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:20,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:54:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:20,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:54:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:20,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:54:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:20,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:54:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:20,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:54:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:20,199 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 23:54:20,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:54:20,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106693337] [2021-12-06 23:54:20,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106693337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:20,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:20,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:54:20,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447365499] [2021-12-06 23:54:20,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:20,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:54:20,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:54:20,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:54:20,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:54:20,201 INFO L87 Difference]: Start difference. First operand 4230 states and 7210 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:20,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:20,942 INFO L93 Difference]: Finished difference Result 7076 states and 11725 transitions. [2021-12-06 23:54:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:54:20,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-06 23:54:20,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:20,963 INFO L225 Difference]: With dead ends: 7076 [2021-12-06 23:54:20,963 INFO L226 Difference]: Without dead ends: 4982 [2021-12-06 23:54:20,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:54:20,969 INFO L933 BasicCegarLoop]: 4354 mSDtfsCounter, 4774 mSDsluCounter, 12357 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4789 SdHoareTripleChecker+Valid, 16711 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:20,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4789 Valid, 16711 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 23:54:20,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4982 states. [2021-12-06 23:54:21,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4982 to 4230. [2021-12-06 23:54:21,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4017 states have (on average 1.709733632063729) internal successors, (6868), 4027 states have internal predecessors, (6868), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-06 23:54:21,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 7201 transitions. [2021-12-06 23:54:21,094 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 7201 transitions. Word has length 123 [2021-12-06 23:54:21,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:21,095 INFO L470 AbstractCegarLoop]: Abstraction has 4230 states and 7201 transitions. [2021-12-06 23:54:21,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:21,095 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 7201 transitions. [2021-12-06 23:54:21,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:54:21,097 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:21,098 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 23:54:21,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:54:21,098 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:21,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:21,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1849418066, now seen corresponding path program 1 times [2021-12-06 23:54:21,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:54:21,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776273352] [2021-12-06 23:54:21,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:21,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:54:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:21,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:54:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:21,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:54:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:21,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:54:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:21,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:54:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:21,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:54:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:21,188 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 23:54:21,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:54:21,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776273352] [2021-12-06 23:54:21,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776273352] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:21,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:21,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:54:21,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975702467] [2021-12-06 23:54:21,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:21,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:54:21,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:54:21,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:54:21,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:54:21,191 INFO L87 Difference]: Start difference. First operand 4230 states and 7201 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:21,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:21,997 INFO L93 Difference]: Finished difference Result 7056 states and 11659 transitions. [2021-12-06 23:54:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:54:21,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-06 23:54:21,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:22,013 INFO L225 Difference]: With dead ends: 7056 [2021-12-06 23:54:22,013 INFO L226 Difference]: Without dead ends: 4962 [2021-12-06 23:54:22,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:54:22,018 INFO L933 BasicCegarLoop]: 4348 mSDtfsCounter, 4664 mSDsluCounter, 16444 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4679 SdHoareTripleChecker+Valid, 20792 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:22,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4679 Valid, 20792 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 23:54:22,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4962 states. [2021-12-06 23:54:22,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4962 to 4230. [2021-12-06 23:54:22,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4017 states have (on average 1.707493154095096) internal successors, (6859), 4027 states have internal predecessors, (6859), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-06 23:54:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 7192 transitions. [2021-12-06 23:54:22,157 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 7192 transitions. Word has length 123 [2021-12-06 23:54:22,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:22,158 INFO L470 AbstractCegarLoop]: Abstraction has 4230 states and 7192 transitions. [2021-12-06 23:54:22,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:22,158 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 7192 transitions. [2021-12-06 23:54:22,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:54:22,161 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:22,161 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 23:54:22,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 23:54:22,162 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:22,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:22,162 INFO L85 PathProgramCache]: Analyzing trace with hash 539145964, now seen corresponding path program 1 times [2021-12-06 23:54:22,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:54:22,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991696278] [2021-12-06 23:54:22,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:22,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:54:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:22,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:54:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:22,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:54:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:22,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:54:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:22,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:54:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:22,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:54:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:22,247 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 23:54:22,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:54:22,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991696278] [2021-12-06 23:54:22,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991696278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:22,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:22,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:54:22,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542344469] [2021-12-06 23:54:22,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:22,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:54:22,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:54:22,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:54:22,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:54:22,249 INFO L87 Difference]: Start difference. First operand 4230 states and 7192 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:23,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:23,883 INFO L93 Difference]: Finished difference Result 10300 states and 16616 transitions. [2021-12-06 23:54:23,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:54:23,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-06 23:54:23,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:23,905 INFO L225 Difference]: With dead ends: 10300 [2021-12-06 23:54:23,905 INFO L226 Difference]: Without dead ends: 8206 [2021-12-06 23:54:23,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:54:23,912 INFO L933 BasicCegarLoop]: 4565 mSDtfsCounter, 5202 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5224 SdHoareTripleChecker+Valid, 21669 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:23,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5224 Valid, 21669 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 23:54:23,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8206 states. [2021-12-06 23:54:24,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8206 to 6082. [2021-12-06 23:54:24,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6082 states, 5693 states have (on average 1.6539610047426665) internal successors, (9416), 5711 states have internal predecessors, (9416), 269 states have call successors, (269), 102 states have call predecessors, (269), 118 states have return successors, (366), 284 states have call predecessors, (366), 269 states have call successors, (366) [2021-12-06 23:54:24,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6082 states to 6082 states and 10051 transitions. [2021-12-06 23:54:24,137 INFO L78 Accepts]: Start accepts. Automaton has 6082 states and 10051 transitions. Word has length 123 [2021-12-06 23:54:24,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:24,138 INFO L470 AbstractCegarLoop]: Abstraction has 6082 states and 10051 transitions. [2021-12-06 23:54:24,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:24,138 INFO L276 IsEmpty]: Start isEmpty. Operand 6082 states and 10051 transitions. [2021-12-06 23:54:24,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:54:24,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:24,141 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 23:54:24,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 23:54:24,141 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:24,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:24,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2140217070, now seen corresponding path program 1 times [2021-12-06 23:54:24,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:54:24,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433589087] [2021-12-06 23:54:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:24,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:54:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:54:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:54:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:24,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:54:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:24,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:54:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:54:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:24,226 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 23:54:24,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:54:24,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433589087] [2021-12-06 23:54:24,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433589087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:24,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:24,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:54:24,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380300068] [2021-12-06 23:54:24,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:24,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:54:24,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:54:24,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:54:24,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:54:24,228 INFO L87 Difference]: Start difference. First operand 6082 states and 10051 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:26,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:26,364 INFO L93 Difference]: Finished difference Result 17558 states and 27899 transitions. [2021-12-06 23:54:26,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:54:26,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-06 23:54:26,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:26,403 INFO L225 Difference]: With dead ends: 17558 [2021-12-06 23:54:26,403 INFO L226 Difference]: Without dead ends: 13612 [2021-12-06 23:54:26,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:54:26,414 INFO L933 BasicCegarLoop]: 4667 mSDtfsCounter, 4972 mSDsluCounter, 17101 mSDsCounter, 0 mSdLazyCounter, 2174 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4985 SdHoareTripleChecker+Valid, 21768 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:26,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4985 Valid, 21768 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2174 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 23:54:26,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13612 states. [2021-12-06 23:54:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13612 to 9691. [2021-12-06 23:54:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9691 states, 8958 states have (on average 1.6070551462379996) internal successors, (14396), 8992 states have internal predecessors, (14396), 501 states have call successors, (501), 198 states have call predecessors, (501), 230 states have return successors, (776), 532 states have call predecessors, (776), 501 states have call successors, (776) [2021-12-06 23:54:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9691 states to 9691 states and 15673 transitions. [2021-12-06 23:54:26,836 INFO L78 Accepts]: Start accepts. Automaton has 9691 states and 15673 transitions. Word has length 123 [2021-12-06 23:54:26,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:26,836 INFO L470 AbstractCegarLoop]: Abstraction has 9691 states and 15673 transitions. [2021-12-06 23:54:26,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:26,837 INFO L276 IsEmpty]: Start isEmpty. Operand 9691 states and 15673 transitions. [2021-12-06 23:54:26,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:54:26,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:26,841 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 23:54:26,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 23:54:26,841 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:26,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:26,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1083485868, now seen corresponding path program 1 times [2021-12-06 23:54:26,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:54:26,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825806462] [2021-12-06 23:54:26,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:26,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:54:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:26,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:54:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:26,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:54:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:26,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:54:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:26,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:54:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:26,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:54:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:26,922 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 23:54:26,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:54:26,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825806462] [2021-12-06 23:54:26,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825806462] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:26,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:26,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:54:26,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641198096] [2021-12-06 23:54:26,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:26,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:54:26,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:54:26,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:54:26,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:54:26,924 INFO L87 Difference]: Start difference. First operand 9691 states and 15673 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:29,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:29,544 INFO L93 Difference]: Finished difference Result 31533 states and 49799 transitions. [2021-12-06 23:54:29,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:54:29,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-06 23:54:29,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:29,589 INFO L225 Difference]: With dead ends: 31533 [2021-12-06 23:54:29,589 INFO L226 Difference]: Without dead ends: 23978 [2021-12-06 23:54:29,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:54:29,611 INFO L933 BasicCegarLoop]: 4555 mSDtfsCounter, 5122 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1843 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5144 SdHoareTripleChecker+Valid, 21659 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:29,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5144 Valid, 21659 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1843 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 23:54:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23978 states. [2021-12-06 23:54:30,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23978 to 16972. [2021-12-06 23:54:30,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16972 states, 15567 states have (on average 1.5737136249759105) internal successors, (24498), 15633 states have internal predecessors, (24498), 949 states have call successors, (949), 390 states have call predecessors, (949), 454 states have return successors, (1742), 1012 states have call predecessors, (1742), 949 states have call successors, (1742) [2021-12-06 23:54:30,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16972 states to 16972 states and 27189 transitions. [2021-12-06 23:54:30,432 INFO L78 Accepts]: Start accepts. Automaton has 16972 states and 27189 transitions. Word has length 123 [2021-12-06 23:54:30,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:30,432 INFO L470 AbstractCegarLoop]: Abstraction has 16972 states and 27189 transitions. [2021-12-06 23:54:30,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:30,433 INFO L276 IsEmpty]: Start isEmpty. Operand 16972 states and 27189 transitions. [2021-12-06 23:54:30,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:54:30,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:30,439 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 23:54:30,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 23:54:30,440 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:30,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:30,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1860096210, now seen corresponding path program 1 times [2021-12-06 23:54:30,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:54:30,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135743423] [2021-12-06 23:54:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:30,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:54:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:30,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:54:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:30,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:54:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:30,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:54:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:30,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:54:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:30,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:54:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:30,524 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 23:54:30,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:54:30,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135743423] [2021-12-06 23:54:30,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135743423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:30,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:30,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:54:30,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677350966] [2021-12-06 23:54:30,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:30,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:54:30,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:54:30,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:54:30,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:54:30,526 INFO L87 Difference]: Start difference. First operand 16972 states and 27189 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:34,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:34,480 INFO L93 Difference]: Finished difference Result 59100 states and 93657 transitions. [2021-12-06 23:54:34,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:54:34,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-06 23:54:34,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:34,595 INFO L225 Difference]: With dead ends: 59100 [2021-12-06 23:54:34,595 INFO L226 Difference]: Without dead ends: 44264 [2021-12-06 23:54:34,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:54:34,625 INFO L933 BasicCegarLoop]: 4550 mSDtfsCounter, 5082 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5104 SdHoareTripleChecker+Valid, 21654 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:34,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5104 Valid, 21654 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 23:54:34,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44264 states. [2021-12-06 23:54:36,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44264 to 31501. [2021-12-06 23:54:36,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31501 states, 28784 states have (on average 1.5540578098943858) internal successors, (44732), 28914 states have internal predecessors, (44732), 1813 states have call successors, (1813), 774 states have call predecessors, (1813), 902 states have return successors, (4128), 1940 states have call predecessors, (4128), 1813 states have call successors, (4128) [2021-12-06 23:54:36,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31501 states to 31501 states and 50673 transitions. [2021-12-06 23:54:36,332 INFO L78 Accepts]: Start accepts. Automaton has 31501 states and 50673 transitions. Word has length 123 [2021-12-06 23:54:36,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:36,332 INFO L470 AbstractCegarLoop]: Abstraction has 31501 states and 50673 transitions. [2021-12-06 23:54:36,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:36,332 INFO L276 IsEmpty]: Start isEmpty. Operand 31501 states and 50673 transitions. [2021-12-06 23:54:36,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:54:36,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:36,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:36,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 23:54:36,345 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:36,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:36,345 INFO L85 PathProgramCache]: Analyzing trace with hash 815896172, now seen corresponding path program 1 times [2021-12-06 23:54:36,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:54:36,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754709884] [2021-12-06 23:54:36,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:36,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:54:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:36,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:54:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:36,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:54:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:36,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:54:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:36,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:54:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:36,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:54:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:36,418 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 23:54:36,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:54:36,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754709884] [2021-12-06 23:54:36,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754709884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:36,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:36,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:54:36,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931147941] [2021-12-06 23:54:36,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:36,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:54:36,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:54:36,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:54:36,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:54:36,419 INFO L87 Difference]: Start difference. First operand 31501 states and 50673 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:43,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:43,120 INFO L93 Difference]: Finished difference Result 113051 states and 181431 transitions. [2021-12-06 23:54:43,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:54:43,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-06 23:54:43,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:43,327 INFO L225 Difference]: With dead ends: 113051 [2021-12-06 23:54:43,328 INFO L226 Difference]: Without dead ends: 83686 [2021-12-06 23:54:43,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:54:43,393 INFO L933 BasicCegarLoop]: 4605 mSDtfsCounter, 4940 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4953 SdHoareTripleChecker+Valid, 21709 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:43,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4953 Valid, 21709 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 23:54:43,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83686 states. [2021-12-06 23:54:46,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83686 to 60494. [2021-12-06 23:54:46,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60494 states, 55217 states have (on average 1.5441259032544326) internal successors, (85262), 55475 states have internal predecessors, (85262), 3477 states have call successors, (3477), 1542 states have call predecessors, (3477), 1798 states have return successors, (10294), 3732 states have call predecessors, (10294), 3477 states have call successors, (10294) [2021-12-06 23:54:46,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60494 states to 60494 states and 99033 transitions. [2021-12-06 23:54:46,901 INFO L78 Accepts]: Start accepts. Automaton has 60494 states and 99033 transitions. Word has length 123 [2021-12-06 23:54:46,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:46,901 INFO L470 AbstractCegarLoop]: Abstraction has 60494 states and 99033 transitions. [2021-12-06 23:54:46,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:46,901 INFO L276 IsEmpty]: Start isEmpty. Operand 60494 states and 99033 transitions. [2021-12-06 23:54:46,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:54:46,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:46,923 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 23:54:46,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 23:54:46,923 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:46,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:46,924 INFO L85 PathProgramCache]: Analyzing trace with hash -67612818, now seen corresponding path program 1 times [2021-12-06 23:54:46,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:54:46,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731612765] [2021-12-06 23:54:46,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:46,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:54:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:46,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:54:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:46,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:54:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:46,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:54:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:46,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:54:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:46,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:54:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:46,990 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 23:54:46,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:54:46,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731612765] [2021-12-06 23:54:46,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731612765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:46,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:46,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:54:46,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749795906] [2021-12-06 23:54:46,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:46,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:54:46,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:54:46,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:54:46,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:54:46,992 INFO L87 Difference]: Start difference. First operand 60494 states and 99033 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:52,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:54:52,432 INFO L93 Difference]: Finished difference Result 135108 states and 225560 transitions. [2021-12-06 23:54:52,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:54:52,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-06 23:54:52,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:54:52,641 INFO L225 Difference]: With dead ends: 135108 [2021-12-06 23:54:52,641 INFO L226 Difference]: Without dead ends: 76750 [2021-12-06 23:54:52,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:54:52,744 INFO L933 BasicCegarLoop]: 4327 mSDtfsCounter, 4774 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4789 SdHoareTripleChecker+Valid, 16682 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:54:52,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4789 Valid, 16682 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 23:54:52,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76750 states. [2021-12-06 23:54:56,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76750 to 60494. [2021-12-06 23:54:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60494 states, 55217 states have (on average 1.5394715395620915) internal successors, (85005), 55475 states have internal predecessors, (85005), 3477 states have call successors, (3477), 1542 states have call predecessors, (3477), 1798 states have return successors, (10294), 3732 states have call predecessors, (10294), 3477 states have call successors, (10294) [2021-12-06 23:54:56,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60494 states to 60494 states and 98776 transitions. [2021-12-06 23:54:56,256 INFO L78 Accepts]: Start accepts. Automaton has 60494 states and 98776 transitions. Word has length 123 [2021-12-06 23:54:56,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:54:56,256 INFO L470 AbstractCegarLoop]: Abstraction has 60494 states and 98776 transitions. [2021-12-06 23:54:56,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:54:56,256 INFO L276 IsEmpty]: Start isEmpty. Operand 60494 states and 98776 transitions. [2021-12-06 23:54:56,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:54:56,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:54:56,278 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 23:54:56,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 23:54:56,278 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:54:56,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:54:56,278 INFO L85 PathProgramCache]: Analyzing trace with hash -96113108, now seen corresponding path program 1 times [2021-12-06 23:54:56,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:54:56,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566692442] [2021-12-06 23:54:56,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:54:56,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:54:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:56,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:54:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:56,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:54:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:56,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:54:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:56,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:54:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:56,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:54:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:54:56,346 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 23:54:56,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:54:56,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566692442] [2021-12-06 23:54:56,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566692442] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:54:56,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:54:56,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:54:56,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426093641] [2021-12-06 23:54:56,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:54:56,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:54:56,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:54:56,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:54:56,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:54:56,348 INFO L87 Difference]: Start difference. First operand 60494 states and 98776 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:55:01,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:55:01,999 INFO L93 Difference]: Finished difference Result 134592 states and 223757 transitions. [2021-12-06 23:55:01,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:55:01,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-06 23:55:01,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:55:02,203 INFO L225 Difference]: With dead ends: 134592 [2021-12-06 23:55:02,203 INFO L226 Difference]: Without dead ends: 76234 [2021-12-06 23:55:02,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:55:02,308 INFO L933 BasicCegarLoop]: 4322 mSDtfsCounter, 4770 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4785 SdHoareTripleChecker+Valid, 16677 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:55:02,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4785 Valid, 16677 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 23:55:02,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76234 states. [2021-12-06 23:55:05,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76234 to 60494. [2021-12-06 23:55:05,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60494 states, 55217 states have (on average 1.5348171758697502) internal successors, (84748), 55475 states have internal predecessors, (84748), 3477 states have call successors, (3477), 1542 states have call predecessors, (3477), 1798 states have return successors, (10294), 3732 states have call predecessors, (10294), 3477 states have call successors, (10294) [2021-12-06 23:55:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60494 states to 60494 states and 98519 transitions. [2021-12-06 23:55:05,910 INFO L78 Accepts]: Start accepts. Automaton has 60494 states and 98519 transitions. Word has length 123 [2021-12-06 23:55:05,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:05,911 INFO L470 AbstractCegarLoop]: Abstraction has 60494 states and 98519 transitions. [2021-12-06 23:55:05,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:55:05,911 INFO L276 IsEmpty]: Start isEmpty. Operand 60494 states and 98519 transitions. [2021-12-06 23:55:05,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:55:05,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:05,932 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 23:55:05,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 23:55:05,932 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:55:05,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:55:05,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1780950122, now seen corresponding path program 1 times [2021-12-06 23:55:05,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:55:05,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362770975] [2021-12-06 23:55:05,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:05,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:55:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:05,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:55:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:05,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:55:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:05,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:55:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:05,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:55:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:05,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:55:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:05,999 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 23:55:05,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:55:05,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362770975] [2021-12-06 23:55:05,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362770975] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:55:05,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:55:05,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:55:06,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746023968] [2021-12-06 23:55:06,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:55:06,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:55:06,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:55:06,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:55:06,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:55:06,001 INFO L87 Difference]: Start difference. First operand 60494 states and 98519 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:55:14,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:55:14,792 INFO L93 Difference]: Finished difference Result 170913 states and 274947 transitions. [2021-12-06 23:55:14,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:55:14,793 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-06 23:55:14,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:55:15,086 INFO L225 Difference]: With dead ends: 170913 [2021-12-06 23:55:15,086 INFO L226 Difference]: Without dead ends: 112556 [2021-12-06 23:55:15,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:55:15,205 INFO L933 BasicCegarLoop]: 4727 mSDtfsCounter, 5191 mSDsluCounter, 12695 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5226 SdHoareTripleChecker+Valid, 17422 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:55:15,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5226 Valid, 17422 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 23:55:15,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112556 states. [2021-12-06 23:55:20,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112556 to 89515. [2021-12-06 23:55:20,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89515 states, 81527 states have (on average 1.5231518392679726) internal successors, (124178), 82042 states have internal predecessors, (124178), 5286 states have call successors, (5286), 2316 states have call predecessors, (5286), 2700 states have return successors, (14291), 5412 states have call predecessors, (14291), 5286 states have call successors, (14291) [2021-12-06 23:55:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89515 states to 89515 states and 143755 transitions. [2021-12-06 23:55:20,628 INFO L78 Accepts]: Start accepts. Automaton has 89515 states and 143755 transitions. Word has length 123 [2021-12-06 23:55:20,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:20,629 INFO L470 AbstractCegarLoop]: Abstraction has 89515 states and 143755 transitions. [2021-12-06 23:55:20,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:55:20,629 INFO L276 IsEmpty]: Start isEmpty. Operand 89515 states and 143755 transitions. [2021-12-06 23:55:20,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-06 23:55:20,753 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:20,753 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:55:20,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 23:55:20,754 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:55:20,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:55:20,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1240598037, now seen corresponding path program 1 times [2021-12-06 23:55:20,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:55:20,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407183389] [2021-12-06 23:55:20,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:20,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:55:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:20,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:55:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:20,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:55:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:20,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:55:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:20,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:55:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:20,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:55:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:20,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 23:55:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:20,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 23:55:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:20,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 23:55:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:55:20,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:55:20,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407183389] [2021-12-06 23:55:20,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407183389] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:55:20,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870319764] [2021-12-06 23:55:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:20,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:55:20,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:55:20,857 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:55:20,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:55:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:20,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:55:20,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:55:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 23:55:21,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:55:21,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870319764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:55:21,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:55:21,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 23:55:21,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734719267] [2021-12-06 23:55:21,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:55:21,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:55:21,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:55:21,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:55:21,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:55:21,164 INFO L87 Difference]: Start difference. First operand 89515 states and 143755 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 23:55:30,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:55:30,685 INFO L93 Difference]: Finished difference Result 262916 states and 423879 transitions. [2021-12-06 23:55:30,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:55:30,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 200 [2021-12-06 23:55:30,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:55:31,156 INFO L225 Difference]: With dead ends: 262916 [2021-12-06 23:55:31,156 INFO L226 Difference]: Without dead ends: 175538 [2021-12-06 23:55:31,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:55:31,307 INFO L933 BasicCegarLoop]: 4354 mSDtfsCounter, 4252 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4252 SdHoareTripleChecker+Valid, 4703 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:55:31,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4252 Valid, 4703 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:55:31,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175538 states. [2021-12-06 23:55:41,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175538 to 174764. [2021-12-06 23:55:41,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174764 states, 158988 states have (on average 1.5176428409691298) internal successors, (241287), 160016 states have internal predecessors, (241287), 10374 states have call successors, (10374), 4632 states have call predecessors, (10374), 5400 states have return successors, (28129), 10371 states have call predecessors, (28129), 10374 states have call successors, (28129) [2021-12-06 23:55:41,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174764 states to 174764 states and 279790 transitions. [2021-12-06 23:55:41,934 INFO L78 Accepts]: Start accepts. Automaton has 174764 states and 279790 transitions. Word has length 200 [2021-12-06 23:55:41,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:55:41,935 INFO L470 AbstractCegarLoop]: Abstraction has 174764 states and 279790 transitions. [2021-12-06 23:55:41,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 23:55:41,935 INFO L276 IsEmpty]: Start isEmpty. Operand 174764 states and 279790 transitions. [2021-12-06 23:55:42,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-06 23:55:42,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:55:42,140 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:55:42,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:55:42,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:55:42,342 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:55:42,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:55:42,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1564248843, now seen corresponding path program 1 times [2021-12-06 23:55:42,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:55:42,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855822092] [2021-12-06 23:55:42,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:42,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:55:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:42,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:55:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:55:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:42,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:55:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:42,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:55:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:42,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:55:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:42,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 23:55:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:42,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 23:55:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:42,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 23:55:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:42,467 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:55:42,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:55:42,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855822092] [2021-12-06 23:55:42,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855822092] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:55:42,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204736861] [2021-12-06 23:55:42,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:55:42,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:55:42,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:55:42,469 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:55:42,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:55:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:55:42,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:55:42,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:55:42,726 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 23:55:42,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:55:42,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204736861] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:55:42,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:55:42,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 23:55:42,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84267187] [2021-12-06 23:55:42,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:55:42,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:55:42,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:55:42,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:55:42,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:55:42,728 INFO L87 Difference]: Start difference. First operand 174764 states and 279790 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 23:56:01,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:56:01,638 INFO L93 Difference]: Finished difference Result 516157 states and 830708 transitions. [2021-12-06 23:56:01,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:56:01,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 200 [2021-12-06 23:56:01,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:56:02,826 INFO L225 Difference]: With dead ends: 516157 [2021-12-06 23:56:02,827 INFO L226 Difference]: Without dead ends: 343530 [2021-12-06 23:56:03,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:56:03,145 INFO L933 BasicCegarLoop]: 4354 mSDtfsCounter, 4264 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4264 SdHoareTripleChecker+Valid, 4703 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:56:03,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4264 Valid, 4703 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:56:03,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343530 states. [2021-12-06 23:56:23,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343530 to 341984. [2021-12-06 23:56:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341984 states, 311210 states have (on average 1.515526493364609) internal successors, (471647), 313264 states have internal predecessors, (471647), 19972 states have call successors, (19972), 9264 states have call predecessors, (19972), 10800 states have return successors, (55227), 19711 states have call predecessors, (55227), 19972 states have call successors, (55227) [2021-12-06 23:56:24,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341984 states to 341984 states and 546846 transitions. [2021-12-06 23:56:24,382 INFO L78 Accepts]: Start accepts. Automaton has 341984 states and 546846 transitions. Word has length 200 [2021-12-06 23:56:24,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:56:24,383 INFO L470 AbstractCegarLoop]: Abstraction has 341984 states and 546846 transitions. [2021-12-06 23:56:24,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 23:56:24,383 INFO L276 IsEmpty]: Start isEmpty. Operand 341984 states and 546846 transitions. [2021-12-06 23:56:24,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-06 23:56:24,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:56:24,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:24,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 23:56:25,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 23:56:25,081 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:56:25,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:25,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1233490901, now seen corresponding path program 1 times [2021-12-06 23:56:25,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:25,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979357] [2021-12-06 23:56:25,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:25,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:25,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:56:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:56:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:25,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:56:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:25,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:56:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:25,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:56:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:25,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 23:56:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:25,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 23:56:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:25,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 23:56:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:56:25,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:25,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979357] [2021-12-06 23:56:25,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979357] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:56:25,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712527103] [2021-12-06 23:56:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:25,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:56:25,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:56:25,197 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:56:25,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 23:56:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:25,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:56:25,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:56:25,529 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-06 23:56:25,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:56:25,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712527103] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:25,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:56:25,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 23:56:25,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890239073] [2021-12-06 23:56:25,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:25,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:56:25,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:25,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:56:25,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:56:25,531 INFO L87 Difference]: Start difference. First operand 341984 states and 546846 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 23:57:04,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:04,249 INFO L93 Difference]: Finished difference Result 1016261 states and 1634506 transitions. [2021-12-06 23:57:04,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:57:04,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 200 [2021-12-06 23:57:04,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:06,615 INFO L225 Difference]: With dead ends: 1016261 [2021-12-06 23:57:06,615 INFO L226 Difference]: Without dead ends: 676414 [2021-12-06 23:57:07,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:57:07,386 INFO L933 BasicCegarLoop]: 4354 mSDtfsCounter, 4282 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4282 SdHoareTripleChecker+Valid, 4703 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:07,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4282 Valid, 4703 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:57:07,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676414 states. [2021-12-06 23:57:48,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676414 to 673324. [2021-12-06 23:57:49,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673324 states, 612558 states have (on average 1.513252622608798) internal successors, (926955), 616664 states have internal predecessors, (926955), 39164 states have call successors, (39164), 18528 states have call predecessors, (39164), 21600 states have return successors, (109419), 38387 states have call predecessors, (109419), 39164 states have call successors, (109419) [2021-12-06 23:57:51,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673324 states to 673324 states and 1075538 transitions. [2021-12-06 23:57:51,993 INFO L78 Accepts]: Start accepts. Automaton has 673324 states and 1075538 transitions. Word has length 200 [2021-12-06 23:57:51,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:51,993 INFO L470 AbstractCegarLoop]: Abstraction has 673324 states and 1075538 transitions. [2021-12-06 23:57:51,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 23:57:51,993 INFO L276 IsEmpty]: Start isEmpty. Operand 673324 states and 1075538 transitions. [2021-12-06 23:57:53,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-06 23:57:53,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:53,087 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:57:53,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 23:57:53,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:53,289 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:57:53,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:53,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1884404405, now seen corresponding path program 1 times [2021-12-06 23:57:53,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:53,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015831809] [2021-12-06 23:57:53,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:53,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:53,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 23:57:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:53,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:57:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:53,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:57:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:53,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:57:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:53,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:57:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:53,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 23:57:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:53,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 23:57:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:53,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 23:57:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:57:53,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:53,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015831809] [2021-12-06 23:57:53,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015831809] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:57:53,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945926574] [2021-12-06 23:57:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:53,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:53,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:53,431 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:57:53,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 23:57:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:53,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:57:53,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:57:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 23:57:53,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:57:53,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945926574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:57:53,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:57:53,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 23:57:53,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662498049] [2021-12-06 23:57:53,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:57:53,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:57:53,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:57:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:57:53,709 INFO L87 Difference]: Start difference. First operand 673324 states and 1075538 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 23:59:11,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:11,801 INFO L93 Difference]: Finished difference Result 2004865 states and 3221998 transitions. [2021-12-06 23:59:11,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:59:11,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 200 [2021-12-06 23:59:11,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:16,888 INFO L225 Difference]: With dead ends: 2004865 [2021-12-06 23:59:16,888 INFO L226 Difference]: Without dead ends: 1333678 [2021-12-06 23:59:18,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:59:18,743 INFO L933 BasicCegarLoop]: 4354 mSDtfsCounter, 4276 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4276 SdHoareTripleChecker+Valid, 4703 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:18,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4276 Valid, 4703 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:59:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333678 states. [2021-12-07 00:00:41,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333678 to 1327500. [2021-12-07 00:00:42,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327500 states, 1207526 states have (on average 1.511529358374064) internal successors, (1825211), 1215736 states have internal predecessors, (1825211), 76772 states have call successors, (76772), 37056 states have call predecessors, (76772), 43200 states have return successors, (217027), 74963 states have call predecessors, (217027), 76772 states have call successors, (217027) [2021-12-07 00:00:48,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327500 states to 1327500 states and 2119010 transitions. [2021-12-07 00:00:49,028 INFO L78 Accepts]: Start accepts. Automaton has 1327500 states and 2119010 transitions. Word has length 200 [2021-12-07 00:00:49,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:00:49,028 INFO L470 AbstractCegarLoop]: Abstraction has 1327500 states and 2119010 transitions. [2021-12-07 00:00:49,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 00:00:49,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1327500 states and 2119010 transitions. [2021-12-07 00:00:51,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-07 00:00:51,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:00:51,086 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:00:51,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 00:00:51,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:00:51,288 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:00:51,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:00:51,289 INFO L85 PathProgramCache]: Analyzing trace with hash 293374357, now seen corresponding path program 1 times [2021-12-07 00:00:51,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:00:51,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725571438] [2021-12-07 00:00:51,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:00:51,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:00:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:00:51,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:00:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:00:51,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-07 00:00:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:00:51,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:00:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:00:51,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:00:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:00:51,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:00:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:00:51,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-07 00:00:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:00:51,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 00:00:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:00:51,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-07 00:00:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:00:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 00:00:51,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:00:51,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725571438] [2021-12-07 00:00:51,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725571438] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:00:51,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160968218] [2021-12-07 00:00:51,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:00:51,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:00:51,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:00:51,405 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:00:51,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1891f2a-8691-45d1-9850-87a1a45bf436/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 00:00:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:00:51,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:00:51,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:00:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-07 00:00:51,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:00:51,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160968218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:00:51,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:00:51,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-07 00:00:51,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421294027] [2021-12-07 00:00:51,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:00:51,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:00:51,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:00:51,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:00:51,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:00:51,630 INFO L87 Difference]: Start difference. First operand 1327500 states and 2119010 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-07 00:03:33,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:03:33,366 INFO L93 Difference]: Finished difference Result 3947289 states and 6357559 transitions. [2021-12-07 00:03:33,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:03:33,366 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), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 200 [2021-12-07 00:03:33,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted.