./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a063354d-c6da-40f9-aca2-32c22da880d1/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a063354d-c6da-40f9-aca2-32c22da880d1/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a063354d-c6da-40f9-aca2-32c22da880d1/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a063354d-c6da-40f9-aca2-32c22da880d1/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a063354d-c6da-40f9-aca2-32c22da880d1/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a063354d-c6da-40f9-aca2-32c22da880d1/bin/uautomizer-wIGwrQj20G --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 aa38d95315e187ea5fe9b62230d938985648af7e7d892502233db02121b7b545 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:44:24,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:44:24,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:44:24,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:44:24,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:44:24,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:44:24,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:44:24,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:44:24,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:44:24,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:44:24,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:44:24,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:44:24,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:44:24,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:44:24,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:44:24,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:44:24,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:44:24,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:44:24,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:44:24,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:44:25,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:44:25,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:44:25,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:44:25,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:44:25,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:44:25,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:44:25,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:44:25,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:44:25,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:44:25,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:44:25,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:44:25,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:44:25,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:44:25,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:44:25,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:44:25,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:44:25,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:44:25,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:44:25,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:44:25,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:44:25,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:44:25,035 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a063354d-c6da-40f9-aca2-32c22da880d1/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:44:25,093 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:44:25,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:44:25,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:44:25,107 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:44:25,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:44:25,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:44:25,118 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:44:25,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:44:25,119 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:44:25,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:44:25,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:44:25,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:44:25,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:44:25,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:44:25,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:44:25,122 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:44:25,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:44:25,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:44:25,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:44:25,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:44:25,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:44:25,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:44:25,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:44:25,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:44:25,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:44:25,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:44:25,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:44:25,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:44:25,127 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:44:25,127 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:44:25,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:44:25,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:44:25,128 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_a063354d-c6da-40f9-aca2-32c22da880d1/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a063354d-c6da-40f9-aca2-32c22da880d1/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa38d95315e187ea5fe9b62230d938985648af7e7d892502233db02121b7b545 [2021-11-23 12:44:25,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:44:25,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:44:25,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:44:25,502 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:44:25,503 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:44:25,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a063354d-c6da-40f9-aca2-32c22da880d1/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-1.c [2021-11-23 12:44:25,596 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a063354d-c6da-40f9-aca2-32c22da880d1/bin/uautomizer-wIGwrQj20G/data/c6fbb1708/88bc9a5a37764a92a0ff47c7c2c47d14/FLAGd8e550e8d [2021-11-23 12:44:26,816 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:44:26,818 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a063354d-c6da-40f9-aca2-32c22da880d1/sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-1.c [2021-11-23 12:44:26,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a063354d-c6da-40f9-aca2-32c22da880d1/bin/uautomizer-wIGwrQj20G/data/c6fbb1708/88bc9a5a37764a92a0ff47c7c2c47d14/FLAGd8e550e8d [2021-11-23 12:44:27,011 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a063354d-c6da-40f9-aca2-32c22da880d1/bin/uautomizer-wIGwrQj20G/data/c6fbb1708/88bc9a5a37764a92a0ff47c7c2c47d14 [2021-11-23 12:44:27,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:44:27,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:44:27,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:44:27,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:44:27,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:44:27,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:44:27" (1/1) ... [2021-11-23 12:44:27,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6493aec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:27, skipping insertion in model container [2021-11-23 12:44:27,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:44:27" (1/1) ... [2021-11-23 12:44:27,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:44:27,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:44:30,041 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_a063354d-c6da-40f9-aca2-32c22da880d1/sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-1.c[378560,378573] [2021-11-23 12:44:30,093 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_a063354d-c6da-40f9-aca2-32c22da880d1/sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-1.c[383339,383352] [2021-11-23 12:44:30,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:44:30,447 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:44:32,005 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_a063354d-c6da-40f9-aca2-32c22da880d1/sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-1.c[378560,378573] [2021-11-23 12:44:32,014 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_a063354d-c6da-40f9-aca2-32c22da880d1/sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-1.c[383339,383352] [2021-11-23 12:44:32,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:44:32,135 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:44:32,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:32 WrapperNode [2021-11-23 12:44:32,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:44:32,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:44:32,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:44:32,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:44:32,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:32" (1/1) ... [2021-11-23 12:44:32,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:32" (1/1) ... [2021-11-23 12:44:32,924 INFO L137 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 60, calls inlined = 167, statements flattened = 14826 [2021-11-23 12:44:32,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:44:32,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:44:32,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:44:32,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:44:32,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:32" (1/1) ... [2021-11-23 12:44:32,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:32" (1/1) ... [2021-11-23 12:44:33,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:32" (1/1) ... [2021-11-23 12:44:33,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:32" (1/1) ... [2021-11-23 12:44:33,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:32" (1/1) ... [2021-11-23 12:44:33,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:32" (1/1) ... [2021-11-23 12:44:33,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:32" (1/1) ... [2021-11-23 12:44:33,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:44:33,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:44:33,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:44:33,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:44:33,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:32" (1/1) ... [2021-11-23 12:44:33,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:44:33,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a063354d-c6da-40f9-aca2-32c22da880d1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:33,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a063354d-c6da-40f9-aca2-32c22da880d1/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:33,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a063354d-c6da-40f9-aca2-32c22da880d1/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:44:33,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:44:33,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:44:33,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:44:33,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:44:34,220 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:44:34,222 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:44:44,681 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:44:44,734 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:44:44,735 INFO L301 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-23 12:44:44,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:44:44 BoogieIcfgContainer [2021-11-23 12:44:44,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:44:44,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:44:44,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:44:44,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:44:44,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:44:27" (1/3) ... [2021-11-23 12:44:44,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67cbb377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:44:44, skipping insertion in model container [2021-11-23 12:44:44,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:32" (2/3) ... [2021-11-23 12:44:44,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67cbb377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:44:44, skipping insertion in model container [2021-11-23 12:44:44,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:44:44" (3/3) ... [2021-11-23 12:44:44,757 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.08.cil-1.c [2021-11-23 12:44:44,767 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:44:44,768 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 12:44:44,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:44:44,959 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:44:44,960 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 12:44:45,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 3183 states, 3180 states have (on average 1.759748427672956) internal successors, (5596), 3182 states have internal predecessors, (5596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:45,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:45,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:45,097 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] [2021-11-23 12:44:45,098 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:45,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:45,105 INFO L85 PathProgramCache]: Analyzing trace with hash 867359313, now seen corresponding path program 1 times [2021-11-23 12:44:45,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:45,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343703787] [2021-11-23 12:44:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:45,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:45,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:45,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343703787] [2021-11-23 12:44:45,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343703787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:45,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:45,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:45,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876170314] [2021-11-23 12:44:45,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:45,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:44:45,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:45,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:45,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:45,466 INFO L87 Difference]: Start difference. First operand has 3183 states, 3180 states have (on average 1.759748427672956) internal successors, (5596), 3182 states have internal predecessors, (5596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:45,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:45,917 INFO L93 Difference]: Finished difference Result 6356 states and 11173 transitions. [2021-11-23 12:44:45,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:45,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:45,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:45,973 INFO L225 Difference]: With dead ends: 6356 [2021-11-23 12:44:45,974 INFO L226 Difference]: Without dead ends: 3116 [2021-11-23 12:44:45,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:45,992 INFO L933 BasicCegarLoop]: 5509 mSDtfsCounter, 1478 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 9531 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:45,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1478 Valid, 9531 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:46,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2021-11-23 12:44:46,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 3116. [2021-11-23 12:44:46,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3116 states, 3114 states have (on average 1.7472703917790624) internal successors, (5441), 3115 states have internal predecessors, (5441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 5441 transitions. [2021-11-23 12:44:46,258 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 5441 transitions. Word has length 121 [2021-11-23 12:44:46,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:46,259 INFO L470 AbstractCegarLoop]: Abstraction has 3116 states and 5441 transitions. [2021-11-23 12:44:46,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:46,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 5441 transitions. [2021-11-23 12:44:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:46,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:46,276 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] [2021-11-23 12:44:46,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:44:46,277 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:46,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:46,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1296257261, now seen corresponding path program 1 times [2021-11-23 12:44:46,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:46,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119275281] [2021-11-23 12:44:46,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:46,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:46,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:46,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119275281] [2021-11-23 12:44:46,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119275281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:46,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:46,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:44:46,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869129167] [2021-11-23 12:44:46,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:46,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:44:46,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:46,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:46,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:46,506 INFO L87 Difference]: Start difference. First operand 3116 states and 5441 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:46,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:46,717 INFO L93 Difference]: Finished difference Result 4911 states and 8104 transitions. [2021-11-23 12:44:46,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:46,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:46,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:46,747 INFO L225 Difference]: With dead ends: 4911 [2021-11-23 12:44:46,748 INFO L226 Difference]: Without dead ends: 3931 [2021-11-23 12:44:46,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:46,761 INFO L933 BasicCegarLoop]: 5435 mSDtfsCounter, 5328 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5328 SdHoareTripleChecker+Valid, 6725 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:46,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5328 Valid, 6725 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-11-23 12:44:46,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3929. [2021-11-23 12:44:46,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.6908581614463967) internal successors, (6640), 3928 states have internal predecessors, (6640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:46,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6640 transitions. [2021-11-23 12:44:46,936 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6640 transitions. Word has length 121 [2021-11-23 12:44:46,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:46,938 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6640 transitions. [2021-11-23 12:44:46,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:46,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6640 transitions. [2021-11-23 12:44:46,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:46,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:46,945 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] [2021-11-23 12:44:46,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:44:46,949 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:46,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:46,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1991925421, now seen corresponding path program 1 times [2021-11-23 12:44:46,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:46,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467841518] [2021-11-23 12:44:46,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:46,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:47,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:47,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467841518] [2021-11-23 12:44:47,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467841518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:47,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:47,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:44:47,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220762446] [2021-11-23 12:44:47,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:47,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:44:47,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:47,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:47,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:47,111 INFO L87 Difference]: Start difference. First operand 3929 states and 6640 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:47,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:47,279 INFO L93 Difference]: Finished difference Result 5721 states and 9297 transitions. [2021-11-23 12:44:47,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:47,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:47,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:47,308 INFO L225 Difference]: With dead ends: 5721 [2021-11-23 12:44:47,308 INFO L226 Difference]: Without dead ends: 3929 [2021-11-23 12:44:47,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:47,323 INFO L933 BasicCegarLoop]: 5429 mSDtfsCounter, 5418 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5418 SdHoareTripleChecker+Valid, 5429 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:47,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5418 Valid, 5429 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:47,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2021-11-23 12:44:47,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3929. [2021-11-23 12:44:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.68882098293863) internal successors, (6632), 3928 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6632 transitions. [2021-11-23 12:44:47,612 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6632 transitions. Word has length 121 [2021-11-23 12:44:47,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:47,613 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6632 transitions. [2021-11-23 12:44:47,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:47,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6632 transitions. [2021-11-23 12:44:47,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:47,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:47,616 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] [2021-11-23 12:44:47,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:44:47,617 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:47,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:47,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1598724333, now seen corresponding path program 1 times [2021-11-23 12:44:47,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:47,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772933371] [2021-11-23 12:44:47,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:47,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:47,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:47,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772933371] [2021-11-23 12:44:47,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772933371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:47,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:47,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:47,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036396651] [2021-11-23 12:44:47,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:47,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:47,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:47,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:47,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:47,720 INFO L87 Difference]: Start difference. First operand 3929 states and 6632 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:48,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:48,041 INFO L93 Difference]: Finished difference Result 7427 states and 11799 transitions. [2021-11-23 12:44:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:48,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:48,082 INFO L225 Difference]: With dead ends: 7427 [2021-11-23 12:44:48,082 INFO L226 Difference]: Without dead ends: 5637 [2021-11-23 12:44:48,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:48,097 INFO L933 BasicCegarLoop]: 6736 mSDtfsCounter, 10839 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10839 SdHoareTripleChecker+Valid, 8050 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:48,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10839 Valid, 8050 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:48,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5637 states. [2021-11-23 12:44:48,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5637 to 3929. [2021-11-23 12:44:48,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.6880570409982174) internal successors, (6629), 3928 states have internal predecessors, (6629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6629 transitions. [2021-11-23 12:44:48,292 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6629 transitions. Word has length 121 [2021-11-23 12:44:48,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:48,293 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6629 transitions. [2021-11-23 12:44:48,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:48,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6629 transitions. [2021-11-23 12:44:48,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:48,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:48,296 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] [2021-11-23 12:44:48,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:44:48,297 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:48,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:48,299 INFO L85 PathProgramCache]: Analyzing trace with hash 662848917, now seen corresponding path program 1 times [2021-11-23 12:44:48,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:48,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426512725] [2021-11-23 12:44:48,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:48,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:48,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:48,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426512725] [2021-11-23 12:44:48,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426512725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:48,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:48,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:48,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481446805] [2021-11-23 12:44:48,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:48,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:48,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:48,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:48,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:48,410 INFO L87 Difference]: Start difference. First operand 3929 states and 6629 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:48,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:48,758 INFO L93 Difference]: Finished difference Result 7425 states and 11788 transitions. [2021-11-23 12:44:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:48,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:48,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:48,801 INFO L225 Difference]: With dead ends: 7425 [2021-11-23 12:44:48,801 INFO L226 Difference]: Without dead ends: 5636 [2021-11-23 12:44:48,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:48,807 INFO L933 BasicCegarLoop]: 6731 mSDtfsCounter, 10834 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10834 SdHoareTripleChecker+Valid, 8042 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:48,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10834 Valid, 8042 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:48,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5636 states. [2021-11-23 12:44:48,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5636 to 3929. [2021-11-23 12:44:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.687293099057805) internal successors, (6626), 3928 states have internal predecessors, (6626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6626 transitions. [2021-11-23 12:44:49,221 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6626 transitions. Word has length 121 [2021-11-23 12:44:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:49,223 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6626 transitions. [2021-11-23 12:44:49,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:49,228 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6626 transitions. [2021-11-23 12:44:49,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:49,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:49,231 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] [2021-11-23 12:44:49,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:44:49,231 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:49,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:49,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1203859757, now seen corresponding path program 1 times [2021-11-23 12:44:49,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:49,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310420987] [2021-11-23 12:44:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:49,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:49,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:49,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310420987] [2021-11-23 12:44:49,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310420987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:49,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:49,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:49,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820658487] [2021-11-23 12:44:49,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:49,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:49,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:49,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:49,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:49,303 INFO L87 Difference]: Start difference. First operand 3929 states and 6626 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:49,746 INFO L93 Difference]: Finished difference Result 7423 states and 11777 transitions. [2021-11-23 12:44:49,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:49,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:49,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:49,783 INFO L225 Difference]: With dead ends: 7423 [2021-11-23 12:44:49,784 INFO L226 Difference]: Without dead ends: 5635 [2021-11-23 12:44:49,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:49,799 INFO L933 BasicCegarLoop]: 5615 mSDtfsCounter, 11942 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11942 SdHoareTripleChecker+Valid, 6923 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:49,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11942 Valid, 6923 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:49,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5635 states. [2021-11-23 12:44:50,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5635 to 3929. [2021-11-23 12:44:50,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.6865291571173924) internal successors, (6623), 3928 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:50,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6623 transitions. [2021-11-23 12:44:50,078 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6623 transitions. Word has length 121 [2021-11-23 12:44:50,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:50,079 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6623 transitions. [2021-11-23 12:44:50,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:50,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6623 transitions. [2021-11-23 12:44:50,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:50,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:50,082 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] [2021-11-23 12:44:50,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:44:50,082 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:50,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:50,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1783965141, now seen corresponding path program 1 times [2021-11-23 12:44:50,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:50,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039457561] [2021-11-23 12:44:50,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:50,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:50,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:50,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039457561] [2021-11-23 12:44:50,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039457561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:50,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:50,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:50,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620742877] [2021-11-23 12:44:50,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:50,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:50,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:50,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:50,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:50,140 INFO L87 Difference]: Start difference. First operand 3929 states and 6623 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:50,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:50,679 INFO L93 Difference]: Finished difference Result 7421 states and 11766 transitions. [2021-11-23 12:44:50,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:50,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:50,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:50,698 INFO L225 Difference]: With dead ends: 7421 [2021-11-23 12:44:50,698 INFO L226 Difference]: Without dead ends: 5634 [2021-11-23 12:44:50,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:50,704 INFO L933 BasicCegarLoop]: 6721 mSDtfsCounter, 10824 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10824 SdHoareTripleChecker+Valid, 8026 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:50,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10824 Valid, 8026 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5634 states. [2021-11-23 12:44:50,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5634 to 3929. [2021-11-23 12:44:50,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.68576521517698) internal successors, (6620), 3928 states have internal predecessors, (6620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:50,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6620 transitions. [2021-11-23 12:44:50,927 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6620 transitions. Word has length 121 [2021-11-23 12:44:50,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:50,929 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6620 transitions. [2021-11-23 12:44:50,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:50,930 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6620 transitions. [2021-11-23 12:44:50,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:50,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:50,932 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] [2021-11-23 12:44:50,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:44:50,933 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:50,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:50,935 INFO L85 PathProgramCache]: Analyzing trace with hash -613505389, now seen corresponding path program 1 times [2021-11-23 12:44:50,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:50,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286496931] [2021-11-23 12:44:50,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:50,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:50,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:50,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286496931] [2021-11-23 12:44:50,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286496931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:50,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:50,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:44:50,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060003800] [2021-11-23 12:44:50,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:50,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:44:50,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:50,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:50,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:50,994 INFO L87 Difference]: Start difference. First operand 3929 states and 6620 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:51,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:51,183 INFO L93 Difference]: Finished difference Result 5715 states and 9250 transitions. [2021-11-23 12:44:51,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:51,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:51,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:51,196 INFO L225 Difference]: With dead ends: 5715 [2021-11-23 12:44:51,196 INFO L226 Difference]: Without dead ends: 3929 [2021-11-23 12:44:51,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:51,202 INFO L933 BasicCegarLoop]: 5416 mSDtfsCounter, 5399 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5399 SdHoareTripleChecker+Valid, 5416 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:51,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5399 Valid, 5416 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:51,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2021-11-23 12:44:51,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3929. [2021-11-23 12:44:51,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.6837280366692131) internal successors, (6612), 3928 states have internal predecessors, (6612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6612 transitions. [2021-11-23 12:44:51,393 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6612 transitions. Word has length 121 [2021-11-23 12:44:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:51,393 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6612 transitions. [2021-11-23 12:44:51,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:51,394 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6612 transitions. [2021-11-23 12:44:51,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:51,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:51,396 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] [2021-11-23 12:44:51,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 12:44:51,398 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:51,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:51,399 INFO L85 PathProgramCache]: Analyzing trace with hash 479575123, now seen corresponding path program 1 times [2021-11-23 12:44:51,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:51,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305816934] [2021-11-23 12:44:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:51,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:51,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:51,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305816934] [2021-11-23 12:44:51,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305816934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:51,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:51,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:51,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262071161] [2021-11-23 12:44:51,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:51,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:51,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:51,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:51,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:51,450 INFO L87 Difference]: Start difference. First operand 3929 states and 6612 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:51,848 INFO L93 Difference]: Finished difference Result 7417 states and 11730 transitions. [2021-11-23 12:44:51,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:51,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:51,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:51,868 INFO L225 Difference]: With dead ends: 7417 [2021-11-23 12:44:51,868 INFO L226 Difference]: Without dead ends: 5632 [2021-11-23 12:44:51,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:51,877 INFO L933 BasicCegarLoop]: 6706 mSDtfsCounter, 10808 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10808 SdHoareTripleChecker+Valid, 8003 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:51,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10808 Valid, 8003 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:51,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5632 states. [2021-11-23 12:44:52,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5632 to 3929. [2021-11-23 12:44:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.6829640947288007) internal successors, (6609), 3928 states have internal predecessors, (6609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:52,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6609 transitions. [2021-11-23 12:44:52,186 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6609 transitions. Word has length 121 [2021-11-23 12:44:52,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:52,186 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6609 transitions. [2021-11-23 12:44:52,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6609 transitions. [2021-11-23 12:44:52,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:52,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:52,190 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] [2021-11-23 12:44:52,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 12:44:52,191 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:52,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:52,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1426828143, now seen corresponding path program 1 times [2021-11-23 12:44:52,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:52,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821360991] [2021-11-23 12:44:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:52,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:52,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:52,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821360991] [2021-11-23 12:44:52,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821360991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:52,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:52,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:52,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034478019] [2021-11-23 12:44:52,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:52,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:52,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:52,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:52,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:52,268 INFO L87 Difference]: Start difference. First operand 3929 states and 6609 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:52,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:52,811 INFO L93 Difference]: Finished difference Result 7287 states and 11537 transitions. [2021-11-23 12:44:52,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:52,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:52,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:52,830 INFO L225 Difference]: With dead ends: 7287 [2021-11-23 12:44:52,831 INFO L226 Difference]: Without dead ends: 5503 [2021-11-23 12:44:52,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:52,838 INFO L933 BasicCegarLoop]: 6566 mSDtfsCounter, 10709 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10709 SdHoareTripleChecker+Valid, 7836 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:52,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10709 Valid, 7836 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:44:52,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5503 states. [2021-11-23 12:44:53,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5503 to 3929. [2021-11-23 12:44:53,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.682200152788388) internal successors, (6606), 3928 states have internal predecessors, (6606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:53,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6606 transitions. [2021-11-23 12:44:53,117 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6606 transitions. Word has length 121 [2021-11-23 12:44:53,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:53,118 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6606 transitions. [2021-11-23 12:44:53,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:53,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6606 transitions. [2021-11-23 12:44:53,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:53,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:53,121 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] [2021-11-23 12:44:53,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 12:44:53,122 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:53,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:53,123 INFO L85 PathProgramCache]: Analyzing trace with hash 174242963, now seen corresponding path program 1 times [2021-11-23 12:44:53,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:53,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380366796] [2021-11-23 12:44:53,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:53,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:53,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:53,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380366796] [2021-11-23 12:44:53,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380366796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:53,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:53,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:44:53,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169527557] [2021-11-23 12:44:53,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:53,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:44:53,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:53,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:53,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:53,183 INFO L87 Difference]: Start difference. First operand 3929 states and 6606 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:53,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:53,473 INFO L93 Difference]: Finished difference Result 5711 states and 9217 transitions. [2021-11-23 12:44:53,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:53,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:53,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:53,489 INFO L225 Difference]: With dead ends: 5711 [2021-11-23 12:44:53,489 INFO L226 Difference]: Without dead ends: 3929 [2021-11-23 12:44:53,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:53,496 INFO L933 BasicCegarLoop]: 5385 mSDtfsCounter, 5283 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5283 SdHoareTripleChecker+Valid, 5473 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:53,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5283 Valid, 5473 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:53,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2021-11-23 12:44:53,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3929. [2021-11-23 12:44:53,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.6750700280112045) internal successors, (6578), 3928 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6578 transitions. [2021-11-23 12:44:53,752 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6578 transitions. Word has length 121 [2021-11-23 12:44:53,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:53,752 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6578 transitions. [2021-11-23 12:44:53,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:53,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6578 transitions. [2021-11-23 12:44:53,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:53,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:53,756 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] [2021-11-23 12:44:53,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 12:44:53,756 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:53,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:53,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1744482899, now seen corresponding path program 1 times [2021-11-23 12:44:53,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:53,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560285318] [2021-11-23 12:44:53,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:53,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:53,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:53,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:53,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560285318] [2021-11-23 12:44:53,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560285318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:53,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:53,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:53,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038574444] [2021-11-23 12:44:53,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:53,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:53,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:53,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:53,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:53,820 INFO L87 Difference]: Start difference. First operand 3929 states and 6578 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:54,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:54,310 INFO L93 Difference]: Finished difference Result 7281 states and 11440 transitions. [2021-11-23 12:44:54,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:54,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:54,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:54,328 INFO L225 Difference]: With dead ends: 7281 [2021-11-23 12:44:54,328 INFO L226 Difference]: Without dead ends: 5500 [2021-11-23 12:44:54,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:54,334 INFO L933 BasicCegarLoop]: 6529 mSDtfsCounter, 10671 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10671 SdHoareTripleChecker+Valid, 7779 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:54,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10671 Valid, 7779 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:44:54,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5500 states. [2021-11-23 12:44:54,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5500 to 3929. [2021-11-23 12:44:54,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.674306086070792) internal successors, (6575), 3928 states have internal predecessors, (6575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:54,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6575 transitions. [2021-11-23 12:44:54,617 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6575 transitions. Word has length 121 [2021-11-23 12:44:54,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:54,617 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6575 transitions. [2021-11-23 12:44:54,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:54,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6575 transitions. [2021-11-23 12:44:54,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:54,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:54,621 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] [2021-11-23 12:44:54,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 12:44:54,621 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:54,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:54,622 INFO L85 PathProgramCache]: Analyzing trace with hash 125507985, now seen corresponding path program 1 times [2021-11-23 12:44:54,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:54,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283102147] [2021-11-23 12:44:54,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:54,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:54,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:54,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:54,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283102147] [2021-11-23 12:44:54,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283102147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:54,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:54,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:54,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113210434] [2021-11-23 12:44:54,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:54,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:54,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:54,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:54,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:54,668 INFO L87 Difference]: Start difference. First operand 3929 states and 6575 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:55,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:55,189 INFO L93 Difference]: Finished difference Result 7279 states and 11429 transitions. [2021-11-23 12:44:55,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:55,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:55,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:55,207 INFO L225 Difference]: With dead ends: 7279 [2021-11-23 12:44:55,207 INFO L226 Difference]: Without dead ends: 5499 [2021-11-23 12:44:55,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:55,214 INFO L933 BasicCegarLoop]: 5539 mSDtfsCounter, 11670 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11670 SdHoareTripleChecker+Valid, 6786 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:55,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11670 Valid, 6786 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:44:55,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2021-11-23 12:44:55,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 3929. [2021-11-23 12:44:55,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.6735421441303795) internal successors, (6572), 3928 states have internal predecessors, (6572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:55,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6572 transitions. [2021-11-23 12:44:55,461 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6572 transitions. Word has length 121 [2021-11-23 12:44:55,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:55,463 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6572 transitions. [2021-11-23 12:44:55,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:55,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6572 transitions. [2021-11-23 12:44:55,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:55,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:55,466 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] [2021-11-23 12:44:55,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 12:44:55,467 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:55,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:55,467 INFO L85 PathProgramCache]: Analyzing trace with hash -758001005, now seen corresponding path program 1 times [2021-11-23 12:44:55,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:55,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546510681] [2021-11-23 12:44:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:55,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:55,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:55,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546510681] [2021-11-23 12:44:55,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546510681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:55,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:55,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:55,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863734221] [2021-11-23 12:44:55,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:55,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:55,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:55,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:55,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:55,517 INFO L87 Difference]: Start difference. First operand 3929 states and 6572 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:56,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:56,023 INFO L93 Difference]: Finished difference Result 7277 states and 11418 transitions. [2021-11-23 12:44:56,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:56,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:56,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:56,040 INFO L225 Difference]: With dead ends: 7277 [2021-11-23 12:44:56,040 INFO L226 Difference]: Without dead ends: 5498 [2021-11-23 12:44:56,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:56,046 INFO L933 BasicCegarLoop]: 6519 mSDtfsCounter, 10661 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10661 SdHoareTripleChecker+Valid, 7763 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:56,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10661 Valid, 7763 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:44:56,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5498 states. [2021-11-23 12:44:56,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5498 to 3929. [2021-11-23 12:44:56,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.6727782021899669) internal successors, (6569), 3928 states have internal predecessors, (6569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:56,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6569 transitions. [2021-11-23 12:44:56,346 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6569 transitions. Word has length 121 [2021-11-23 12:44:56,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:56,346 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6569 transitions. [2021-11-23 12:44:56,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:56,347 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6569 transitions. [2021-11-23 12:44:56,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:56,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:56,349 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] [2021-11-23 12:44:56,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 12:44:56,350 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:56,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:56,351 INFO L85 PathProgramCache]: Analyzing trace with hash -786501295, now seen corresponding path program 1 times [2021-11-23 12:44:56,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:56,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993336006] [2021-11-23 12:44:56,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:56,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:56,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:56,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993336006] [2021-11-23 12:44:56,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993336006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:56,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:56,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:56,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569268443] [2021-11-23 12:44:56,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:56,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:56,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:56,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:56,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:56,404 INFO L87 Difference]: Start difference. First operand 3929 states and 6569 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:56,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:56,903 INFO L93 Difference]: Finished difference Result 7275 states and 11407 transitions. [2021-11-23 12:44:56,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:56,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:56,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:56,920 INFO L225 Difference]: With dead ends: 7275 [2021-11-23 12:44:56,921 INFO L226 Difference]: Without dead ends: 5497 [2021-11-23 12:44:56,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:56,927 INFO L933 BasicCegarLoop]: 6514 mSDtfsCounter, 10656 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10656 SdHoareTripleChecker+Valid, 7755 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:56,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10656 Valid, 7755 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:44:56,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5497 states. [2021-11-23 12:44:57,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5497 to 3929. [2021-11-23 12:44:57,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.6720142602495545) internal successors, (6566), 3928 states have internal predecessors, (6566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:57,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6566 transitions. [2021-11-23 12:44:57,195 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6566 transitions. Word has length 121 [2021-11-23 12:44:57,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:57,195 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6566 transitions. [2021-11-23 12:44:57,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:57,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6566 transitions. [2021-11-23 12:44:57,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:57,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:57,198 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] [2021-11-23 12:44:57,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 12:44:57,198 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:57,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:57,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1567883987, now seen corresponding path program 1 times [2021-11-23 12:44:57,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:57,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759560186] [2021-11-23 12:44:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:57,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:57,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:57,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759560186] [2021-11-23 12:44:57,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759560186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:57,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:57,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:44:57,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182019641] [2021-11-23 12:44:57,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:57,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:44:57,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:57,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:57,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:57,266 INFO L87 Difference]: Start difference. First operand 3929 states and 6566 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:57,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:57,539 INFO L93 Difference]: Finished difference Result 5706 states and 9132 transitions. [2021-11-23 12:44:57,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:57,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:57,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:57,550 INFO L225 Difference]: With dead ends: 5706 [2021-11-23 12:44:57,550 INFO L226 Difference]: Without dead ends: 3929 [2021-11-23 12:44:57,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:57,555 INFO L933 BasicCegarLoop]: 5361 mSDtfsCounter, 5255 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5255 SdHoareTripleChecker+Valid, 5448 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:57,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5255 Valid, 5448 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:57,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2021-11-23 12:44:57,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3929. [2021-11-23 12:44:57,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.6648841354723707) internal successors, (6538), 3928 states have internal predecessors, (6538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:57,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6538 transitions. [2021-11-23 12:44:57,845 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6538 transitions. Word has length 121 [2021-11-23 12:44:57,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:57,845 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6538 transitions. [2021-11-23 12:44:57,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:57,846 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6538 transitions. [2021-11-23 12:44:57,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:57,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:57,848 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] [2021-11-23 12:44:57,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 12:44:57,848 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:57,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:57,849 INFO L85 PathProgramCache]: Analyzing trace with hash 983121620, now seen corresponding path program 1 times [2021-11-23 12:44:57,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:57,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635414630] [2021-11-23 12:44:57,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:57,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:57,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:57,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635414630] [2021-11-23 12:44:57,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635414630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:57,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:57,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:57,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109425211] [2021-11-23 12:44:57,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:57,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:57,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:57,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:57,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:57,909 INFO L87 Difference]: Start difference. First operand 3929 states and 6538 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:58,448 INFO L93 Difference]: Finished difference Result 7271 states and 11314 transitions. [2021-11-23 12:44:58,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:58,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:58,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:58,460 INFO L225 Difference]: With dead ends: 7271 [2021-11-23 12:44:58,460 INFO L226 Difference]: Without dead ends: 5495 [2021-11-23 12:44:58,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:58,466 INFO L933 BasicCegarLoop]: 6479 mSDtfsCounter, 10619 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10619 SdHoareTripleChecker+Valid, 7702 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:58,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10619 Valid, 7702 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:44:58,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2021-11-23 12:44:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 3929. [2021-11-23 12:44:58,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3927 states have (on average 1.6641201935319583) internal successors, (6535), 3928 states have internal predecessors, (6535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:58,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 6535 transitions. [2021-11-23 12:44:58,751 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 6535 transitions. Word has length 121 [2021-11-23 12:44:58,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:58,752 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 6535 transitions. [2021-11-23 12:44:58,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:58,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 6535 transitions. [2021-11-23 12:44:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 12:44:58,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:58,755 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] [2021-11-23 12:44:58,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 12:44:58,756 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:58,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:58,756 INFO L85 PathProgramCache]: Analyzing trace with hash 212388054, now seen corresponding path program 1 times [2021-11-23 12:44:58,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:58,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571859985] [2021-11-23 12:44:58,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:58,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:58,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:58,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:58,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571859985] [2021-11-23 12:44:58,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571859985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:58,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:58,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:44:58,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327345930] [2021-11-23 12:44:58,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:58,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:44:58,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:58,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:58,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:58,803 INFO L87 Difference]: Start difference. First operand 3929 states and 6535 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:59,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:59,181 INFO L93 Difference]: Finished difference Result 7366 states and 11426 transitions. [2021-11-23 12:44:59,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:59,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-23 12:44:59,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:59,192 INFO L225 Difference]: With dead ends: 7366 [2021-11-23 12:44:59,192 INFO L226 Difference]: Without dead ends: 5592 [2021-11-23 12:44:59,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:59,198 INFO L933 BasicCegarLoop]: 5359 mSDtfsCounter, 5297 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5297 SdHoareTripleChecker+Valid, 6586 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:59,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5297 Valid, 6586 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:59,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2021-11-23 12:44:59,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 5468. [2021-11-23 12:44:59,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5468 states, 5466 states have (on average 1.5916575192096598) internal successors, (8700), 5467 states have internal predecessors, (8700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:59,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5468 states to 5468 states and 8700 transitions. [2021-11-23 12:44:59,642 INFO L78 Accepts]: Start accepts. Automaton has 5468 states and 8700 transitions. Word has length 121 [2021-11-23 12:44:59,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:59,642 INFO L470 AbstractCegarLoop]: Abstraction has 5468 states and 8700 transitions. [2021-11-23 12:44:59,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 5468 states and 8700 transitions. [2021-11-23 12:44:59,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-23 12:44:59,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:59,648 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:59,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 12:44:59,649 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:59,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:59,649 INFO L85 PathProgramCache]: Analyzing trace with hash 410293436, now seen corresponding path program 1 times [2021-11-23 12:44:59,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:59,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942036898] [2021-11-23 12:44:59,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:59,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 12:44:59,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:59,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942036898] [2021-11-23 12:44:59,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942036898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:59,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:59,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:44:59,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252850246] [2021-11-23 12:44:59,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:59,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:44:59,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:59,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:44:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:59,746 INFO L87 Difference]: Start difference. First operand 5468 states and 8700 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:00,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:00,852 INFO L93 Difference]: Finished difference Result 11982 states and 17935 transitions. [2021-11-23 12:45:00,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:45:00,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-11-23 12:45:00,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:00,862 INFO L225 Difference]: With dead ends: 11982 [2021-11-23 12:45:00,862 INFO L226 Difference]: Without dead ends: 8673 [2021-11-23 12:45:00,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:45:00,869 INFO L933 BasicCegarLoop]: 5335 mSDtfsCounter, 4981 mSDsluCounter, 17755 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4981 SdHoareTripleChecker+Valid, 23090 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:00,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4981 Valid, 23090 Invalid, 205 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:45:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8673 states. [2021-11-23 12:45:01,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8673 to 5531. [2021-11-23 12:45:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5531 states, 5529 states have (on average 1.5812986073431001) internal successors, (8743), 5530 states have internal predecessors, (8743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:01,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 8743 transitions. [2021-11-23 12:45:01,305 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 8743 transitions. Word has length 196 [2021-11-23 12:45:01,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:01,306 INFO L470 AbstractCegarLoop]: Abstraction has 5531 states and 8743 transitions. [2021-11-23 12:45:01,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:01,306 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 8743 transitions. [2021-11-23 12:45:01,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-23 12:45:01,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:01,311 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:01,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 12:45:01,312 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:45:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:01,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1708034632, now seen corresponding path program 1 times [2021-11-23 12:45:01,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:01,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316562148] [2021-11-23 12:45:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:01,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 12:45:01,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:01,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316562148] [2021-11-23 12:45:01,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316562148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:01,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:01,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:45:01,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237377646] [2021-11-23 12:45:01,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:01,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:45:01,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:01,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:45:01,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:45:01,369 INFO L87 Difference]: Start difference. First operand 5531 states and 8743 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:02,445 INFO L93 Difference]: Finished difference Result 13627 states and 20070 transitions. [2021-11-23 12:45:02,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:45:02,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-11-23 12:45:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:02,462 INFO L225 Difference]: With dead ends: 13627 [2021-11-23 12:45:02,463 INFO L226 Difference]: Without dead ends: 10257 [2021-11-23 12:45:02,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:45:02,472 INFO L933 BasicCegarLoop]: 5417 mSDtfsCounter, 11547 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11547 SdHoareTripleChecker+Valid, 8328 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:02,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11547 Valid, 8328 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:45:02,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10257 states. [2021-11-23 12:45:03,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10257 to 8512. [2021-11-23 12:45:03,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8512 states, 8510 states have (on average 1.5133960047003525) internal successors, (12879), 8511 states have internal predecessors, (12879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8512 states to 8512 states and 12879 transitions. [2021-11-23 12:45:03,283 INFO L78 Accepts]: Start accepts. Automaton has 8512 states and 12879 transitions. Word has length 196 [2021-11-23 12:45:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:03,283 INFO L470 AbstractCegarLoop]: Abstraction has 8512 states and 12879 transitions. [2021-11-23 12:45:03,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:03,284 INFO L276 IsEmpty]: Start isEmpty. Operand 8512 states and 12879 transitions. [2021-11-23 12:45:03,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-23 12:45:03,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:03,292 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:03,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 12:45:03,293 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:45:03,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:03,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1435623977, now seen corresponding path program 1 times [2021-11-23 12:45:03,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:03,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796600799] [2021-11-23 12:45:03,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:03,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 12:45:03,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:03,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796600799] [2021-11-23 12:45:03,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796600799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:03,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:03,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:45:03,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153455319] [2021-11-23 12:45:03,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:03,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:45:03,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:03,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:45:03,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:45:03,361 INFO L87 Difference]: Start difference. First operand 8512 states and 12879 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:04,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:04,784 INFO L93 Difference]: Finished difference Result 20765 states and 30048 transitions. [2021-11-23 12:45:04,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:45:04,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-11-23 12:45:04,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:04,803 INFO L225 Difference]: With dead ends: 20765 [2021-11-23 12:45:04,803 INFO L226 Difference]: Without dead ends: 14418 [2021-11-23 12:45:04,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:45:04,812 INFO L933 BasicCegarLoop]: 5476 mSDtfsCounter, 4659 mSDsluCounter, 17392 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4659 SdHoareTripleChecker+Valid, 22868 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:04,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4659 Valid, 22868 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:45:04,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14418 states. [2021-11-23 12:45:05,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14418 to 8632. [2021-11-23 12:45:05,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8632 states, 8630 states have (on average 1.5019698725376593) internal successors, (12962), 8631 states have internal predecessors, (12962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8632 states to 8632 states and 12962 transitions. [2021-11-23 12:45:05,722 INFO L78 Accepts]: Start accepts. Automaton has 8632 states and 12962 transitions. Word has length 196 [2021-11-23 12:45:05,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:05,722 INFO L470 AbstractCegarLoop]: Abstraction has 8632 states and 12962 transitions. [2021-11-23 12:45:05,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:05,723 INFO L276 IsEmpty]: Start isEmpty. Operand 8632 states and 12962 transitions. [2021-11-23 12:45:05,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-23 12:45:05,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:05,732 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:05,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 12:45:05,733 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:45:05,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:05,734 INFO L85 PathProgramCache]: Analyzing trace with hash -273257517, now seen corresponding path program 1 times [2021-11-23 12:45:05,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:05,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344801293] [2021-11-23 12:45:05,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:05,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 12:45:05,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:05,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344801293] [2021-11-23 12:45:05,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344801293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:05,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:05,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:45:05,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736089669] [2021-11-23 12:45:05,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:05,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:45:05,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:05,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:45:05,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:45:05,799 INFO L87 Difference]: Start difference. First operand 8632 states and 12962 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:07,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:07,757 INFO L93 Difference]: Finished difference Result 24141 states and 34360 transitions. [2021-11-23 12:45:07,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:45:07,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-11-23 12:45:07,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:07,780 INFO L225 Difference]: With dead ends: 24141 [2021-11-23 12:45:07,780 INFO L226 Difference]: Without dead ends: 17683 [2021-11-23 12:45:07,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:45:07,790 INFO L933 BasicCegarLoop]: 5393 mSDtfsCounter, 11510 mSDsluCounter, 3006 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11510 SdHoareTripleChecker+Valid, 8399 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:07,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11510 Valid, 8399 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:45:07,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17683 states. [2021-11-23 12:45:08,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17683 to 14399. [2021-11-23 12:45:08,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14399 states, 14397 states have (on average 1.4488435090643885) internal successors, (20859), 14398 states have internal predecessors, (20859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14399 states to 14399 states and 20859 transitions. [2021-11-23 12:45:09,001 INFO L78 Accepts]: Start accepts. Automaton has 14399 states and 20859 transitions. Word has length 196 [2021-11-23 12:45:09,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:09,002 INFO L470 AbstractCegarLoop]: Abstraction has 14399 states and 20859 transitions. [2021-11-23 12:45:09,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:09,002 INFO L276 IsEmpty]: Start isEmpty. Operand 14399 states and 20859 transitions. [2021-11-23 12:45:09,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-23 12:45:09,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:09,014 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:09,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 12:45:09,014 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:45:09,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:09,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2104554894, now seen corresponding path program 1 times [2021-11-23 12:45:09,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:09,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683829482] [2021-11-23 12:45:09,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:09,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:09,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 12:45:09,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:09,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683829482] [2021-11-23 12:45:09,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683829482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:09,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:09,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:45:09,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600293095] [2021-11-23 12:45:09,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:09,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:45:09,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:09,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:45:09,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:45:09,074 INFO L87 Difference]: Start difference. First operand 14399 states and 20859 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:11,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:11,524 INFO L93 Difference]: Finished difference Result 36964 states and 52160 transitions. [2021-11-23 12:45:11,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:45:11,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-11-23 12:45:11,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:11,558 INFO L225 Difference]: With dead ends: 36964 [2021-11-23 12:45:11,558 INFO L226 Difference]: Without dead ends: 24743 [2021-11-23 12:45:11,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:45:11,575 INFO L933 BasicCegarLoop]: 5432 mSDtfsCounter, 4202 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4202 SdHoareTripleChecker+Valid, 22675 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:11,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4202 Valid, 22675 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:45:11,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24743 states. [2021-11-23 12:45:13,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24743 to 14627. [2021-11-23 12:45:13,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14627 states, 14625 states have (on average 1.437128205128205) internal successors, (21018), 14626 states have internal predecessors, (21018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14627 states to 14627 states and 21018 transitions. [2021-11-23 12:45:13,098 INFO L78 Accepts]: Start accepts. Automaton has 14627 states and 21018 transitions. Word has length 196 [2021-11-23 12:45:13,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:13,099 INFO L470 AbstractCegarLoop]: Abstraction has 14627 states and 21018 transitions. [2021-11-23 12:45:13,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:13,099 INFO L276 IsEmpty]: Start isEmpty. Operand 14627 states and 21018 transitions. [2021-11-23 12:45:13,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-23 12:45:13,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:13,106 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:13,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 12:45:13,106 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:45:13,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:13,106 INFO L85 PathProgramCache]: Analyzing trace with hash -817925522, now seen corresponding path program 1 times [2021-11-23 12:45:13,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:13,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579868446] [2021-11-23 12:45:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:13,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 12:45:13,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:13,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579868446] [2021-11-23 12:45:13,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579868446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:13,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:13,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:45:13,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607131933] [2021-11-23 12:45:13,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:13,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:45:13,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:13,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:45:13,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:45:13,166 INFO L87 Difference]: Start difference. First operand 14627 states and 21018 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:16,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:16,804 INFO L93 Difference]: Finished difference Result 46140 states and 64449 transitions. [2021-11-23 12:45:16,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:45:16,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-11-23 12:45:16,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:16,847 INFO L225 Difference]: With dead ends: 46140 [2021-11-23 12:45:16,848 INFO L226 Difference]: Without dead ends: 33698 [2021-11-23 12:45:16,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:45:16,864 INFO L933 BasicCegarLoop]: 6328 mSDtfsCounter, 3620 mSDsluCounter, 17544 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3620 SdHoareTripleChecker+Valid, 23872 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:16,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3620 Valid, 23872 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:45:16,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33698 states. [2021-11-23 12:45:18,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33698 to 15062. [2021-11-23 12:45:18,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15062 states, 15060 states have (on average 1.4245019920318724) internal successors, (21453), 15061 states have internal predecessors, (21453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15062 states to 15062 states and 21453 transitions. [2021-11-23 12:45:18,552 INFO L78 Accepts]: Start accepts. Automaton has 15062 states and 21453 transitions. Word has length 196 [2021-11-23 12:45:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:18,552 INFO L470 AbstractCegarLoop]: Abstraction has 15062 states and 21453 transitions. [2021-11-23 12:45:18,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:18,553 INFO L276 IsEmpty]: Start isEmpty. Operand 15062 states and 21453 transitions. [2021-11-23 12:45:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-23 12:45:18,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:18,560 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:18,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 12:45:18,560 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:45:18,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:18,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1859601324, now seen corresponding path program 1 times [2021-11-23 12:45:18,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:18,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111297327] [2021-11-23 12:45:18,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:18,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 12:45:18,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:18,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111297327] [2021-11-23 12:45:18,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111297327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:18,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:18,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:45:18,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217568581] [2021-11-23 12:45:18,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:18,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:45:18,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:18,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:45:18,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:45:18,614 INFO L87 Difference]: Start difference. First operand 15062 states and 21453 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:21,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:21,506 INFO L93 Difference]: Finished difference Result 39479 states and 54466 transitions. [2021-11-23 12:45:21,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:45:21,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-11-23 12:45:21,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:21,545 INFO L225 Difference]: With dead ends: 39479 [2021-11-23 12:45:21,545 INFO L226 Difference]: Without dead ends: 26607 [2021-11-23 12:45:21,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:45:21,560 INFO L933 BasicCegarLoop]: 5346 mSDtfsCounter, 5173 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5173 SdHoareTripleChecker+Valid, 6573 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:21,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5173 Valid, 6573 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:45:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26607 states. [2021-11-23 12:45:24,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26607 to 26573. [2021-11-23 12:45:24,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26573 states, 26571 states have (on average 1.387904105980204) internal successors, (36878), 26572 states have internal predecessors, (36878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26573 states to 26573 states and 36878 transitions. [2021-11-23 12:45:24,491 INFO L78 Accepts]: Start accepts. Automaton has 26573 states and 36878 transitions. Word has length 196 [2021-11-23 12:45:24,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:24,491 INFO L470 AbstractCegarLoop]: Abstraction has 26573 states and 36878 transitions. [2021-11-23 12:45:24,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand 26573 states and 36878 transitions. [2021-11-23 12:45:24,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-23 12:45:24,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:24,502 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:24,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 12:45:24,502 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:45:24,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:24,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1235851467, now seen corresponding path program 1 times [2021-11-23 12:45:24,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:24,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722017946] [2021-11-23 12:45:24,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:24,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 12:45:24,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:24,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722017946] [2021-11-23 12:45:24,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722017946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:24,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:24,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:45:24,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17647140] [2021-11-23 12:45:24,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:24,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:45:24,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:45:24,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:45:24,566 INFO L87 Difference]: Start difference. First operand 26573 states and 36878 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:30,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:30,243 INFO L93 Difference]: Finished difference Result 69348 states and 95003 transitions. [2021-11-23 12:45:30,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:45:30,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-11-23 12:45:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:30,299 INFO L225 Difference]: With dead ends: 69348 [2021-11-23 12:45:30,299 INFO L226 Difference]: Without dead ends: 44969 [2021-11-23 12:45:30,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:45:30,323 INFO L933 BasicCegarLoop]: 5388 mSDtfsCounter, 3722 mSDsluCounter, 16915 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3722 SdHoareTripleChecker+Valid, 22303 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:30,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3722 Valid, 22303 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:45:30,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44969 states. [2021-11-23 12:45:34,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44969 to 27005. [2021-11-23 12:45:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27005 states, 27003 states have (on average 1.376921082842647) internal successors, (37181), 27004 states have internal predecessors, (37181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27005 states to 27005 states and 37181 transitions. [2021-11-23 12:45:34,408 INFO L78 Accepts]: Start accepts. Automaton has 27005 states and 37181 transitions. Word has length 196 [2021-11-23 12:45:34,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:34,408 INFO L470 AbstractCegarLoop]: Abstraction has 27005 states and 37181 transitions. [2021-11-23 12:45:34,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:34,409 INFO L276 IsEmpty]: Start isEmpty. Operand 27005 states and 37181 transitions. [2021-11-23 12:45:34,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-23 12:45:34,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:34,427 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:34,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 12:45:34,428 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:45:34,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:34,429 INFO L85 PathProgramCache]: Analyzing trace with hash 899226311, now seen corresponding path program 1 times [2021-11-23 12:45:34,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:34,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693904120] [2021-11-23 12:45:34,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:34,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 12:45:34,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:34,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693904120] [2021-11-23 12:45:34,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693904120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:34,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:34,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:45:34,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182597453] [2021-11-23 12:45:34,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:34,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:45:34,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:34,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:45:34,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:45:34,502 INFO L87 Difference]: Start difference. First operand 27005 states and 37181 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:42,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:42,671 INFO L93 Difference]: Finished difference Result 85500 states and 116176 transitions. [2021-11-23 12:45:42,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:45:42,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-11-23 12:45:42,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:42,754 INFO L225 Difference]: With dead ends: 85500 [2021-11-23 12:45:42,755 INFO L226 Difference]: Without dead ends: 60696 [2021-11-23 12:45:42,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:45:42,782 INFO L933 BasicCegarLoop]: 5760 mSDtfsCounter, 3361 mSDsluCounter, 16848 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3361 SdHoareTripleChecker+Valid, 22608 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:42,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3361 Valid, 22608 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:45:42,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60696 states. [2021-11-23 12:45:47,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60696 to 27824. [2021-11-23 12:45:47,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27824 states, 27822 states have (on average 1.3658256056358278) internal successors, (38000), 27823 states have internal predecessors, (38000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27824 states to 27824 states and 38000 transitions. [2021-11-23 12:45:47,288 INFO L78 Accepts]: Start accepts. Automaton has 27824 states and 38000 transitions. Word has length 196 [2021-11-23 12:45:47,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:47,288 INFO L470 AbstractCegarLoop]: Abstraction has 27824 states and 38000 transitions. [2021-11-23 12:45:47,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 27824 states and 38000 transitions. [2021-11-23 12:45:47,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-23 12:45:47,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:47,301 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:47,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 12:45:47,301 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:45:47,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:47,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1151182587, now seen corresponding path program 1 times [2021-11-23 12:45:47,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:47,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927208881] [2021-11-23 12:45:47,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:47,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 12:45:47,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:47,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927208881] [2021-11-23 12:45:47,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927208881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:47,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:47,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:45:47,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484395703] [2021-11-23 12:45:47,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:47,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:45:47,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:47,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:45:47,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:45:47,406 INFO L87 Difference]: Start difference. First operand 27824 states and 38000 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:54,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:54,904 INFO L93 Difference]: Finished difference Result 75697 states and 101086 transitions. [2021-11-23 12:45:54,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:45:54,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-11-23 12:45:54,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:54,978 INFO L225 Difference]: With dead ends: 75697 [2021-11-23 12:45:54,978 INFO L226 Difference]: Without dead ends: 50084 [2021-11-23 12:45:54,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:45:54,998 INFO L933 BasicCegarLoop]: 5312 mSDtfsCounter, 3062 mSDsluCounter, 14917 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3062 SdHoareTripleChecker+Valid, 20229 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:54,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3062 Valid, 20229 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:45:55,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50084 states.