./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.05.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 2b9ed7c85c1e945b329b46ea2facde1ef0195f46b3e9e9585453dabdeb816de5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:15:24,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:15:24,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:15:24,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:15:24,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:15:24,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:15:24,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:15:24,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:15:24,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:15:24,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:15:24,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:15:24,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:15:24,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:15:24,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:15:24,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:15:24,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:15:24,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:15:24,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:15:24,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:15:24,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:15:24,121 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:15:24,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:15:24,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:15:24,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:15:24,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:15:24,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:15:24,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:15:24,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:15:24,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:15:24,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:15:24,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:15:24,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:15:24,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:15:24,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:15:24,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:15:24,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:15:24,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:15:24,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:15:24,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:15:24,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:15:24,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:15:24,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:15:24,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:15:24,178 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:15:24,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:15:24,179 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:15:24,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:15:24,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:15:24,181 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:15:24,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:15:24,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:15:24,182 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:15:24,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:15:24,183 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:15:24,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:15:24,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:15:24,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:15:24,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:15:24,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:15:24,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:15:24,185 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:15:24,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:15:24,185 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:15:24,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:15:24,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:15:24,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:15:24,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:15:24,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:15:24,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:15:24,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:15:24,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:15:24,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:15:24,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:15:24,188 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:15:24,188 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:15:24,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:15:24,188 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b9ed7c85c1e945b329b46ea2facde1ef0195f46b3e9e9585453dabdeb816de5 [2022-07-13 21:15:24,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:15:24,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:15:24,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:15:24,470 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:15:24,470 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:15:24,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.05.cil-1.c [2022-07-13 21:15:24,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2170be39d/9e34daf65b0849a8a329869e503c3e0e/FLAG697696fbb [2022-07-13 21:15:25,001 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:15:25,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.05.cil-1.c [2022-07-13 21:15:25,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2170be39d/9e34daf65b0849a8a329869e503c3e0e/FLAG697696fbb [2022-07-13 21:15:25,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2170be39d/9e34daf65b0849a8a329869e503c3e0e [2022-07-13 21:15:25,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:15:25,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:15:25,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:15:25,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:15:25,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:15:25,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:15:25" (1/1) ... [2022-07-13 21:15:25,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:25, skipping insertion in model container [2022-07-13 21:15:25,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:15:25" (1/1) ... [2022-07-13 21:15:25,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:15:25,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:15:25,617 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.05.cil-1.c[911,924] [2022-07-13 21:15:25,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.05.cil-1.c[8416,8429] [2022-07-13 21:15:25,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:15:25,714 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:15:25,724 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.05.cil-1.c[911,924] [2022-07-13 21:15:25,742 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.05.cil-1.c[8416,8429] [2022-07-13 21:15:25,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:15:25,809 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:15:25,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:25 WrapperNode [2022-07-13 21:15:25,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:15:25,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:15:25,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:15:25,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:15:25,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:25" (1/1) ... [2022-07-13 21:15:25,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:25" (1/1) ... [2022-07-13 21:15:25,893 INFO L137 Inliner]: procedures = 65, calls = 76, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 672 [2022-07-13 21:15:25,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:15:25,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:15:25,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:15:25,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:15:25,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:25" (1/1) ... [2022-07-13 21:15:25,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:25" (1/1) ... [2022-07-13 21:15:25,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:25" (1/1) ... [2022-07-13 21:15:25,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:25" (1/1) ... [2022-07-13 21:15:25,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:25" (1/1) ... [2022-07-13 21:15:25,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:25" (1/1) ... [2022-07-13 21:15:25,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:25" (1/1) ... [2022-07-13 21:15:25,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:15:25,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:15:25,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:15:25,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:15:25,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:25" (1/1) ... [2022-07-13 21:15:25,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:15:25,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:15:26,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 21:15:26,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:15:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:15:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 21:15:26,054 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 21:15:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-13 21:15:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-13 21:15:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-13 21:15:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-13 21:15:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-13 21:15:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-13 21:15:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-13 21:15:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-13 21:15:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-13 21:15:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-13 21:15:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-13 21:15:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-13 21:15:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-13 21:15:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-13 21:15:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-13 21:15:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-13 21:15:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-13 21:15:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-13 21:15:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-13 21:15:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-13 21:15:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:15:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-13 21:15:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-13 21:15:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-13 21:15:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-13 21:15:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:15:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:15:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-13 21:15:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-13 21:15:26,210 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:15:26,211 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:15:26,810 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-13 21:15:26,810 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-13 21:15:26,847 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:15:26,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:15:26,864 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-07-13 21:15:26,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:15:26 BoogieIcfgContainer [2022-07-13 21:15:26,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:15:26,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:15:26,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:15:26,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:15:26,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:15:25" (1/3) ... [2022-07-13 21:15:26,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8627e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:15:26, skipping insertion in model container [2022-07-13 21:15:26,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:25" (2/3) ... [2022-07-13 21:15:26,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8627e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:15:26, skipping insertion in model container [2022-07-13 21:15:26,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:15:26" (3/3) ... [2022-07-13 21:15:26,875 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.05.cil-1.c [2022-07-13 21:15:26,888 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:15:26,888 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:15:26,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:15:26,946 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@654323b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@63cd2340 [2022-07-13 21:15:26,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:15:26,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 272 states have (on average 1.5955882352941178) internal successors, (434), 278 states have internal predecessors, (434), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-13 21:15:26,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:15:26,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:26,963 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:15:26,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:26,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:26,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1519130765, now seen corresponding path program 1 times [2022-07-13 21:15:26,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:26,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532256942] [2022-07-13 21:15:26,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:26,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:27,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:27,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:27,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:27,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:27,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:15:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:27,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:15:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:27,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:15:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:27,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:27,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532256942] [2022-07-13 21:15:27,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532256942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:27,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:27,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:15:27,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397655362] [2022-07-13 21:15:27,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:27,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:15:27,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:27,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:15:27,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:15:27,276 INFO L87 Difference]: Start difference. First operand has 324 states, 272 states have (on average 1.5955882352941178) internal successors, (434), 278 states have internal predecessors, (434), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:15:28,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:28,301 INFO L93 Difference]: Finished difference Result 778 states and 1209 transitions. [2022-07-13 21:15:28,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:15:28,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-13 21:15:28,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:28,318 INFO L225 Difference]: With dead ends: 778 [2022-07-13 21:15:28,318 INFO L226 Difference]: Without dead ends: 465 [2022-07-13 21:15:28,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:15:28,327 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 852 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:28,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1715 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:15:28,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-07-13 21:15:28,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 426. [2022-07-13 21:15:28,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 354 states have (on average 1.4830508474576272) internal successors, (525), 360 states have internal predecessors, (525), 48 states have call successors, (48), 21 states have call predecessors, (48), 22 states have return successors, (51), 47 states have call predecessors, (51), 46 states have call successors, (51) [2022-07-13 21:15:28,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 624 transitions. [2022-07-13 21:15:28,408 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 624 transitions. Word has length 65 [2022-07-13 21:15:28,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:28,409 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 624 transitions. [2022-07-13 21:15:28,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:15:28,409 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 624 transitions. [2022-07-13 21:15:28,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:15:28,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:28,413 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:15:28,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:15:28,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:28,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:28,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1237496501, now seen corresponding path program 1 times [2022-07-13 21:15:28,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:28,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710233007] [2022-07-13 21:15:28,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:28,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:28,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:28,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:28,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:28,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:28,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:15:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:28,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:15:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:28,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:15:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:28,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:28,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710233007] [2022-07-13 21:15:28,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710233007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:28,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:28,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:15:28,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968924894] [2022-07-13 21:15:28,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:28,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:15:28,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:28,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:15:28,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:15:28,543 INFO L87 Difference]: Start difference. First operand 426 states and 624 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:15:29,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:29,548 INFO L93 Difference]: Finished difference Result 823 states and 1190 transitions. [2022-07-13 21:15:29,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:15:29,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-13 21:15:29,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:29,559 INFO L225 Difference]: With dead ends: 823 [2022-07-13 21:15:29,559 INFO L226 Difference]: Without dead ends: 614 [2022-07-13 21:15:29,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-13 21:15:29,564 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 1132 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:29,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 1686 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:15:29,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-07-13 21:15:29,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 538. [2022-07-13 21:15:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 444 states have (on average 1.4662162162162162) internal successors, (651), 452 states have internal predecessors, (651), 61 states have call successors, (61), 28 states have call predecessors, (61), 31 states have return successors, (72), 61 states have call predecessors, (72), 59 states have call successors, (72) [2022-07-13 21:15:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 784 transitions. [2022-07-13 21:15:29,639 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 784 transitions. Word has length 65 [2022-07-13 21:15:29,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:29,640 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 784 transitions. [2022-07-13 21:15:29,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:15:29,640 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 784 transitions. [2022-07-13 21:15:29,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:15:29,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:29,649 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:15:29,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:15:29,650 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:29,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:29,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1028884685, now seen corresponding path program 1 times [2022-07-13 21:15:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:29,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480888389] [2022-07-13 21:15:29,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:29,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:29,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:29,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:29,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:29,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:29,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:15:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:29,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:15:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:29,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:15:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:29,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:29,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:29,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480888389] [2022-07-13 21:15:29,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480888389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:29,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:29,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:15:29,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047851552] [2022-07-13 21:15:29,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:29,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:15:29,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:29,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:15:29,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:15:29,775 INFO L87 Difference]: Start difference. First operand 538 states and 784 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-13 21:15:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:31,643 INFO L93 Difference]: Finished difference Result 2084 states and 2982 transitions. [2022-07-13 21:15:31,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 21:15:31,644 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-13 21:15:31,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:31,653 INFO L225 Difference]: With dead ends: 2084 [2022-07-13 21:15:31,653 INFO L226 Difference]: Without dead ends: 1751 [2022-07-13 21:15:31,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 21:15:31,657 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 2637 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2655 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 1723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:31,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2655 Valid, 2294 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 1723 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:15:31,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2022-07-13 21:15:31,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1591. [2022-07-13 21:15:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1292 states have (on average 1.3893188854489165) internal successors, (1795), 1315 states have internal predecessors, (1795), 171 states have call successors, (171), 111 states have call predecessors, (171), 126 states have return successors, (205), 167 states have call predecessors, (205), 169 states have call successors, (205) [2022-07-13 21:15:31,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 2171 transitions. [2022-07-13 21:15:31,768 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 2171 transitions. Word has length 65 [2022-07-13 21:15:31,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:31,769 INFO L495 AbstractCegarLoop]: Abstraction has 1591 states and 2171 transitions. [2022-07-13 21:15:31,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-13 21:15:31,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 2171 transitions. [2022-07-13 21:15:31,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:15:31,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:31,770 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:15:31,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:15:31,771 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:31,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:31,771 INFO L85 PathProgramCache]: Analyzing trace with hash -591028054, now seen corresponding path program 1 times [2022-07-13 21:15:31,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:31,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929255800] [2022-07-13 21:15:31,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:31,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:31,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:31,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:31,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:31,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:31,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:15:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:31,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 21:15:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:31,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 21:15:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:31,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:31,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929255800] [2022-07-13 21:15:31,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929255800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:31,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:31,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:15:31,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015440863] [2022-07-13 21:15:31,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:31,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:15:31,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:31,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:15:31,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:15:31,889 INFO L87 Difference]: Start difference. First operand 1591 states and 2171 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:15:32,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:32,766 INFO L93 Difference]: Finished difference Result 3119 states and 4250 transitions. [2022-07-13 21:15:32,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:15:32,766 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-13 21:15:32,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:32,776 INFO L225 Difference]: With dead ends: 3119 [2022-07-13 21:15:32,776 INFO L226 Difference]: Without dead ends: 1739 [2022-07-13 21:15:32,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:15:32,782 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 386 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 2039 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:32,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 2039 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:15:32,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2022-07-13 21:15:32,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1631. [2022-07-13 21:15:32,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1324 states have (on average 1.3753776435045317) internal successors, (1821), 1347 states have internal predecessors, (1821), 171 states have call successors, (171), 111 states have call predecessors, (171), 134 states have return successors, (213), 175 states have call predecessors, (213), 169 states have call successors, (213) [2022-07-13 21:15:32,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2205 transitions. [2022-07-13 21:15:32,859 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2205 transitions. Word has length 66 [2022-07-13 21:15:32,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:32,860 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2205 transitions. [2022-07-13 21:15:32,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:15:32,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2205 transitions. [2022-07-13 21:15:32,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:15:32,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:32,862 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:15:32,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:15:32,862 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:32,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:32,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1620387352, now seen corresponding path program 1 times [2022-07-13 21:15:32,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:32,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995202684] [2022-07-13 21:15:32,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:32,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:32,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:32,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:32,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:32,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:32,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:15:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:32,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 21:15:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:32,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 21:15:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:33,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:33,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:33,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995202684] [2022-07-13 21:15:33,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995202684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:33,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:33,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:15:33,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110698499] [2022-07-13 21:15:33,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:33,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:15:33,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:33,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:15:33,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:15:33,006 INFO L87 Difference]: Start difference. First operand 1631 states and 2205 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-13 21:15:34,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:34,876 INFO L93 Difference]: Finished difference Result 5203 states and 7079 transitions. [2022-07-13 21:15:34,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 21:15:34,877 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-07-13 21:15:34,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:34,886 INFO L225 Difference]: With dead ends: 5203 [2022-07-13 21:15:34,886 INFO L226 Difference]: Without dead ends: 2022 [2022-07-13 21:15:34,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 21:15:34,895 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 3068 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3086 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:34,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3086 Valid, 2023 Invalid, 2231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:15:34,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2022-07-13 21:15:34,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1842. [2022-07-13 21:15:34,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1463 states have (on average 1.330827067669173) internal successors, (1947), 1488 states have internal predecessors, (1947), 211 states have call successors, (211), 139 states have call predecessors, (211), 166 states have return successors, (259), 217 states have call predecessors, (259), 209 states have call successors, (259) [2022-07-13 21:15:34,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2417 transitions. [2022-07-13 21:15:34,994 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2417 transitions. Word has length 66 [2022-07-13 21:15:34,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:34,995 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2417 transitions. [2022-07-13 21:15:34,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-13 21:15:34,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2417 transitions. [2022-07-13 21:15:34,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:15:34,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:34,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:34,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:15:34,998 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:34,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:34,999 INFO L85 PathProgramCache]: Analyzing trace with hash -920662268, now seen corresponding path program 1 times [2022-07-13 21:15:34,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:34,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822700325] [2022-07-13 21:15:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:34,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:35,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:35,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:35,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:35,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:35,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:15:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:35,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:15:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:35,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:15:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:35,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:15:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:35,157 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:15:35,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:35,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822700325] [2022-07-13 21:15:35,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822700325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:35,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:35,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:15:35,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380681069] [2022-07-13 21:15:35,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:35,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:15:35,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:35,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:15:35,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:15:35,168 INFO L87 Difference]: Start difference. First operand 1842 states and 2417 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:15:35,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:35,996 INFO L93 Difference]: Finished difference Result 3667 states and 4819 transitions. [2022-07-13 21:15:35,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:15:35,997 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-07-13 21:15:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:36,010 INFO L225 Difference]: With dead ends: 3667 [2022-07-13 21:15:36,010 INFO L226 Difference]: Without dead ends: 2036 [2022-07-13 21:15:36,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:15:36,019 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 560 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:36,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 1785 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 21:15:36,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2022-07-13 21:15:36,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1902. [2022-07-13 21:15:36,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1511 states have (on average 1.3163467902051622) internal successors, (1989), 1536 states have internal predecessors, (1989), 211 states have call successors, (211), 139 states have call predecessors, (211), 178 states have return successors, (271), 229 states have call predecessors, (271), 209 states have call successors, (271) [2022-07-13 21:15:36,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2471 transitions. [2022-07-13 21:15:36,126 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2471 transitions. Word has length 91 [2022-07-13 21:15:36,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:36,128 INFO L495 AbstractCegarLoop]: Abstraction has 1902 states and 2471 transitions. [2022-07-13 21:15:36,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:15:36,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2471 transitions. [2022-07-13 21:15:36,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:15:36,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:36,131 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:36,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:15:36,131 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:36,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:36,132 INFO L85 PathProgramCache]: Analyzing trace with hash -476761594, now seen corresponding path program 1 times [2022-07-13 21:15:36,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:36,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445062113] [2022-07-13 21:15:36,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:36,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:36,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:36,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:36,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:36,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:36,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:15:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:36,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:15:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:36,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:15:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:36,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:15:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:36,244 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:15:36,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:36,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445062113] [2022-07-13 21:15:36,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445062113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:36,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:36,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:15:36,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525486520] [2022-07-13 21:15:36,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:36,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:15:36,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:36,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:15:36,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:15:36,246 INFO L87 Difference]: Start difference. First operand 1902 states and 2471 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:15:37,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:37,190 INFO L93 Difference]: Finished difference Result 3429 states and 4435 transitions. [2022-07-13 21:15:37,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 21:15:37,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-13 21:15:37,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:37,200 INFO L225 Difference]: With dead ends: 3429 [2022-07-13 21:15:37,200 INFO L226 Difference]: Without dead ends: 1976 [2022-07-13 21:15:37,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-13 21:15:37,207 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 915 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:37,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 1639 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:15:37,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2022-07-13 21:15:37,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1681. [2022-07-13 21:15:37,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1343 states have (on average 1.3186895011169024) internal successors, (1771), 1363 states have internal predecessors, (1771), 183 states have call successors, (183), 120 states have call predecessors, (183), 153 states have return successors, (231), 199 states have call predecessors, (231), 181 states have call successors, (231) [2022-07-13 21:15:37,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2185 transitions. [2022-07-13 21:15:37,292 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2185 transitions. Word has length 91 [2022-07-13 21:15:37,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:37,292 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2185 transitions. [2022-07-13 21:15:37,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:15:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2185 transitions. [2022-07-13 21:15:37,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:15:37,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:37,294 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:37,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:15:37,294 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:37,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:37,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1462400452, now seen corresponding path program 1 times [2022-07-13 21:15:37,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:37,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435587026] [2022-07-13 21:15:37,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:37,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:37,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:37,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:37,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:37,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:15:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:37,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:15:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:37,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:15:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:37,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:15:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:37,395 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:15:37,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:37,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435587026] [2022-07-13 21:15:37,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435587026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:37,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:37,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:37,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623833249] [2022-07-13 21:15:37,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:37,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:37,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:37,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:37,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:37,401 INFO L87 Difference]: Start difference. First operand 1681 states and 2185 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-13 21:15:37,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:37,979 INFO L93 Difference]: Finished difference Result 4833 states and 6297 transitions. [2022-07-13 21:15:37,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:15:37,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-13 21:15:37,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:37,996 INFO L225 Difference]: With dead ends: 4833 [2022-07-13 21:15:37,997 INFO L226 Difference]: Without dead ends: 3364 [2022-07-13 21:15:38,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:15:38,003 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 832 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:38,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1417 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 21:15:38,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3364 states. [2022-07-13 21:15:38,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3364 to 3150. [2022-07-13 21:15:38,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3150 states, 2492 states have (on average 1.2837078651685394) internal successors, (3199), 2541 states have internal predecessors, (3199), 344 states have call successors, (344), 233 states have call predecessors, (344), 312 states have return successors, (514), 378 states have call predecessors, (514), 342 states have call successors, (514) [2022-07-13 21:15:38,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3150 states to 3150 states and 4057 transitions. [2022-07-13 21:15:38,159 INFO L78 Accepts]: Start accepts. Automaton has 3150 states and 4057 transitions. Word has length 91 [2022-07-13 21:15:38,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:38,160 INFO L495 AbstractCegarLoop]: Abstraction has 3150 states and 4057 transitions. [2022-07-13 21:15:38,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-13 21:15:38,160 INFO L276 IsEmpty]: Start isEmpty. Operand 3150 states and 4057 transitions. [2022-07-13 21:15:38,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:15:38,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:38,162 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:38,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:15:38,162 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:38,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:38,163 INFO L85 PathProgramCache]: Analyzing trace with hash 404562374, now seen corresponding path program 1 times [2022-07-13 21:15:38,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:38,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748405331] [2022-07-13 21:15:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:38,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:15:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:15:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:15:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:15:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,221 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:15:38,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:38,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748405331] [2022-07-13 21:15:38,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748405331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:38,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:38,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:15:38,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81786172] [2022-07-13 21:15:38,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:38,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:15:38,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:38,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:15:38,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:15:38,224 INFO L87 Difference]: Start difference. First operand 3150 states and 4057 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:15:38,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:38,658 INFO L93 Difference]: Finished difference Result 4734 states and 6041 transitions. [2022-07-13 21:15:38,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 21:15:38,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-13 21:15:38,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:38,666 INFO L225 Difference]: With dead ends: 4734 [2022-07-13 21:15:38,667 INFO L226 Difference]: Without dead ends: 1796 [2022-07-13 21:15:38,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:15:38,674 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 674 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:38,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 992 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:15:38,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2022-07-13 21:15:38,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1681. [2022-07-13 21:15:38,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1343 states have (on average 1.2911392405063291) internal successors, (1734), 1363 states have internal predecessors, (1734), 183 states have call successors, (183), 120 states have call predecessors, (183), 153 states have return successors, (231), 199 states have call predecessors, (231), 181 states have call successors, (231) [2022-07-13 21:15:38,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2148 transitions. [2022-07-13 21:15:38,750 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2148 transitions. Word has length 91 [2022-07-13 21:15:38,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:38,750 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2148 transitions. [2022-07-13 21:15:38,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:15:38,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2148 transitions. [2022-07-13 21:15:38,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 21:15:38,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:38,752 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:38,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:15:38,752 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:38,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:38,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1171182892, now seen corresponding path program 1 times [2022-07-13 21:15:38,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:38,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115217177] [2022-07-13 21:15:38,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:38,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:15:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:15:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:15:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 21:15:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 21:15:38,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:38,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115217177] [2022-07-13 21:15:38,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115217177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:38,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:38,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:15:38,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41085725] [2022-07-13 21:15:38,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:38,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:15:38,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:38,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:15:38,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:15:38,855 INFO L87 Difference]: Start difference. First operand 1681 states and 2148 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 21:15:40,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:40,099 INFO L93 Difference]: Finished difference Result 4099 states and 5231 transitions. [2022-07-13 21:15:40,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 21:15:40,099 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-07-13 21:15:40,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:40,111 INFO L225 Difference]: With dead ends: 4099 [2022-07-13 21:15:40,112 INFO L226 Difference]: Without dead ends: 2479 [2022-07-13 21:15:40,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-13 21:15:40,118 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 1777 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:40,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 1793 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:15:40,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2022-07-13 21:15:40,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2302. [2022-07-13 21:15:40,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 1810 states have (on average 1.2574585635359117) internal successors, (2276), 1838 states have internal predecessors, (2276), 260 states have call successors, (260), 168 states have call predecessors, (260), 230 states have return successors, (362), 297 states have call predecessors, (362), 258 states have call successors, (362) [2022-07-13 21:15:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 2898 transitions. [2022-07-13 21:15:40,239 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 2898 transitions. Word has length 92 [2022-07-13 21:15:40,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:40,241 INFO L495 AbstractCegarLoop]: Abstraction has 2302 states and 2898 transitions. [2022-07-13 21:15:40,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 21:15:40,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 2898 transitions. [2022-07-13 21:15:40,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 21:15:40,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:40,243 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:15:40,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:15:40,244 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:40,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:40,244 INFO L85 PathProgramCache]: Analyzing trace with hash 972429717, now seen corresponding path program 1 times [2022-07-13 21:15:40,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:40,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178334942] [2022-07-13 21:15:40,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:40,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:40,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 21:15:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:40,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 21:15:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:40,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 21:15:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:40,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 21:15:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:40,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:40,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178334942] [2022-07-13 21:15:40,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178334942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:40,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:40,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:15:40,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163647206] [2022-07-13 21:15:40,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:40,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:15:40,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:40,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:15:40,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:15:40,315 INFO L87 Difference]: Start difference. First operand 2302 states and 2898 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:41,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:41,078 INFO L93 Difference]: Finished difference Result 2562 states and 3308 transitions. [2022-07-13 21:15:41,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:15:41,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-13 21:15:41,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:41,088 INFO L225 Difference]: With dead ends: 2562 [2022-07-13 21:15:41,089 INFO L226 Difference]: Without dead ends: 2367 [2022-07-13 21:15:41,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:15:41,091 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 614 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:41,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 878 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 21:15:41,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2022-07-13 21:15:41,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2302. [2022-07-13 21:15:41,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 1810 states have (on average 1.2569060773480663) internal successors, (2275), 1838 states have internal predecessors, (2275), 260 states have call successors, (260), 168 states have call predecessors, (260), 230 states have return successors, (362), 297 states have call predecessors, (362), 258 states have call successors, (362) [2022-07-13 21:15:41,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 2897 transitions. [2022-07-13 21:15:41,261 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 2897 transitions. Word has length 101 [2022-07-13 21:15:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:41,261 INFO L495 AbstractCegarLoop]: Abstraction has 2302 states and 2897 transitions. [2022-07-13 21:15:41,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 2897 transitions. [2022-07-13 21:15:41,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 21:15:41,264 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:41,264 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:15:41,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:15:41,264 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:41,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:41,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1000930007, now seen corresponding path program 1 times [2022-07-13 21:15:41,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:41,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933811591] [2022-07-13 21:15:41,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:41,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:41,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:41,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 21:15:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:41,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 21:15:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:41,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 21:15:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:41,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 21:15:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:41,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:41,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:41,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933811591] [2022-07-13 21:15:41,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933811591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:41,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:41,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:15:41,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097473218] [2022-07-13 21:15:41,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:41,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:15:41,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:41,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:15:41,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:15:41,367 INFO L87 Difference]: Start difference. First operand 2302 states and 2897 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:42,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:42,693 INFO L93 Difference]: Finished difference Result 2814 states and 3704 transitions. [2022-07-13 21:15:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:15:42,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-13 21:15:42,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:42,703 INFO L225 Difference]: With dead ends: 2814 [2022-07-13 21:15:42,704 INFO L226 Difference]: Without dead ends: 2625 [2022-07-13 21:15:42,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:15:42,705 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 989 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:42,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1170 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:15:42,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2022-07-13 21:15:42,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2496. [2022-07-13 21:15:42,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 1983 states have (on average 1.2829046898638428) internal successors, (2544), 2012 states have internal predecessors, (2544), 274 states have call successors, (274), 174 states have call predecessors, (274), 237 states have return successors, (379), 311 states have call predecessors, (379), 272 states have call successors, (379) [2022-07-13 21:15:42,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3197 transitions. [2022-07-13 21:15:42,836 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3197 transitions. Word has length 101 [2022-07-13 21:15:42,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:42,836 INFO L495 AbstractCegarLoop]: Abstraction has 2496 states and 3197 transitions. [2022-07-13 21:15:42,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:42,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3197 transitions. [2022-07-13 21:15:42,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 21:15:42,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:42,838 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:15:42,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:15:42,838 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:42,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:42,839 INFO L85 PathProgramCache]: Analyzing trace with hash -715954597, now seen corresponding path program 1 times [2022-07-13 21:15:42,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:42,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333092435] [2022-07-13 21:15:42,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:42,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:42,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:42,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 21:15:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:42,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 21:15:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:42,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 21:15:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:42,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 21:15:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:42,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:42,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:42,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333092435] [2022-07-13 21:15:42,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333092435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:42,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:42,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:42,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636982782] [2022-07-13 21:15:42,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:42,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:42,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:42,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:42,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:42,961 INFO L87 Difference]: Start difference. First operand 2496 states and 3197 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:44,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:44,604 INFO L93 Difference]: Finished difference Result 3274 states and 4421 transitions. [2022-07-13 21:15:44,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:15:44,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-13 21:15:44,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:44,617 INFO L225 Difference]: With dead ends: 3274 [2022-07-13 21:15:44,617 INFO L226 Difference]: Without dead ends: 2891 [2022-07-13 21:15:44,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:15:44,620 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 994 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:44,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 1846 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:15:44,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2022-07-13 21:15:44,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 2678. [2022-07-13 21:15:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2144 states have (on average 1.3008395522388059) internal successors, (2789), 2174 states have internal predecessors, (2789), 288 states have call successors, (288), 180 states have call predecessors, (288), 244 states have return successors, (395), 326 states have call predecessors, (395), 286 states have call successors, (395) [2022-07-13 21:15:44,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 3472 transitions. [2022-07-13 21:15:44,764 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 3472 transitions. Word has length 101 [2022-07-13 21:15:44,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:44,765 INFO L495 AbstractCegarLoop]: Abstraction has 2678 states and 3472 transitions. [2022-07-13 21:15:44,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:44,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 3472 transitions. [2022-07-13 21:15:44,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 21:15:44,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:44,767 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:15:44,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:15:44,768 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:44,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:44,768 INFO L85 PathProgramCache]: Analyzing trace with hash 608901597, now seen corresponding path program 1 times [2022-07-13 21:15:44,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:44,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666141902] [2022-07-13 21:15:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:44,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 21:15:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 21:15:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 21:15:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 21:15:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:44,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:44,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666141902] [2022-07-13 21:15:44,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666141902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:44,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:44,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:44,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984980468] [2022-07-13 21:15:44,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:44,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:44,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:44,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:44,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:44,885 INFO L87 Difference]: Start difference. First operand 2678 states and 3472 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:46,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:46,540 INFO L93 Difference]: Finished difference Result 3949 states and 5464 transitions. [2022-07-13 21:15:46,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:15:46,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-13 21:15:46,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:46,558 INFO L225 Difference]: With dead ends: 3949 [2022-07-13 21:15:46,559 INFO L226 Difference]: Without dead ends: 3384 [2022-07-13 21:15:46,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:15:46,563 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 990 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 1839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:46,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1839 Invalid, 1839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:15:46,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2022-07-13 21:15:46,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 3045. [2022-07-13 21:15:46,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3045 states, 2469 states have (on average 1.3300931551235318) internal successors, (3284), 2501 states have internal predecessors, (3284), 316 states have call successors, (316), 192 states have call predecessors, (316), 258 states have return successors, (431), 356 states have call predecessors, (431), 314 states have call successors, (431) [2022-07-13 21:15:46,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 4031 transitions. [2022-07-13 21:15:46,721 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 4031 transitions. Word has length 101 [2022-07-13 21:15:46,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:46,721 INFO L495 AbstractCegarLoop]: Abstraction has 3045 states and 4031 transitions. [2022-07-13 21:15:46,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:46,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 4031 transitions. [2022-07-13 21:15:46,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 21:15:46,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:46,723 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:15:46,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:15:46,724 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:46,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:46,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2119307749, now seen corresponding path program 1 times [2022-07-13 21:15:46,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:46,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475025064] [2022-07-13 21:15:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:46,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:46,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:46,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 21:15:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:46,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 21:15:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:46,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 21:15:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:46,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 21:15:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:46,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:46,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475025064] [2022-07-13 21:15:46,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475025064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:46,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:46,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:46,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686864044] [2022-07-13 21:15:46,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:46,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:46,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:46,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:46,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:46,821 INFO L87 Difference]: Start difference. First operand 3045 states and 4031 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:48,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:48,465 INFO L93 Difference]: Finished difference Result 5258 states and 7483 transitions. [2022-07-13 21:15:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:15:48,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-13 21:15:48,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:48,492 INFO L225 Difference]: With dead ends: 5258 [2022-07-13 21:15:48,492 INFO L226 Difference]: Without dead ends: 4326 [2022-07-13 21:15:48,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:15:48,500 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 989 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:48,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1834 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:15:48,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2022-07-13 21:15:48,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 3782. [2022-07-13 21:15:48,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3782 states, 3122 states have (on average 1.3702754644458681) internal successors, (4278), 3158 states have internal predecessors, (4278), 372 states have call successors, (372), 216 states have call predecessors, (372), 286 states have return successors, (509), 416 states have call predecessors, (509), 370 states have call successors, (509) [2022-07-13 21:15:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 5159 transitions. [2022-07-13 21:15:48,726 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 5159 transitions. Word has length 101 [2022-07-13 21:15:48,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:48,726 INFO L495 AbstractCegarLoop]: Abstraction has 3782 states and 5159 transitions. [2022-07-13 21:15:48,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:48,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 5159 transitions. [2022-07-13 21:15:48,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 21:15:48,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:48,729 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:15:48,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:15:48,730 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:48,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:48,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1117821469, now seen corresponding path program 1 times [2022-07-13 21:15:48,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:48,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139048571] [2022-07-13 21:15:48,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:48,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:48,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 21:15:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 21:15:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:48,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 21:15:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:48,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 21:15:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:48,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:48,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139048571] [2022-07-13 21:15:48,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139048571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:48,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:48,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:48,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327969907] [2022-07-13 21:15:48,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:48,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:48,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:48,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:48,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:48,831 INFO L87 Difference]: Start difference. First operand 3782 states and 5159 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:50,493 INFO L93 Difference]: Finished difference Result 7877 states and 11541 transitions. [2022-07-13 21:15:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:15:50,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-13 21:15:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:50,518 INFO L225 Difference]: With dead ends: 7877 [2022-07-13 21:15:50,518 INFO L226 Difference]: Without dead ends: 6208 [2022-07-13 21:15:50,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:15:50,528 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 988 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1713 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:50,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 1829 Invalid, 1823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1713 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:15:50,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6208 states. [2022-07-13 21:15:50,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6208 to 5263. [2022-07-13 21:15:50,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 4435 states have (on average 1.4151071025930102) internal successors, (6276), 4479 states have internal predecessors, (6276), 484 states have call successors, (484), 264 states have call predecessors, (484), 342 states have return successors, (683), 536 states have call predecessors, (683), 482 states have call successors, (683) [2022-07-13 21:15:50,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 7443 transitions. [2022-07-13 21:15:50,848 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 7443 transitions. Word has length 101 [2022-07-13 21:15:50,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:50,848 INFO L495 AbstractCegarLoop]: Abstraction has 5263 states and 7443 transitions. [2022-07-13 21:15:50,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:50,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 7443 transitions. [2022-07-13 21:15:50,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 21:15:50,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:50,852 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:15:50,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:15:50,853 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:50,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:50,853 INFO L85 PathProgramCache]: Analyzing trace with hash -24680997, now seen corresponding path program 1 times [2022-07-13 21:15:50,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:50,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030784548] [2022-07-13 21:15:50,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:50,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:50,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:50,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 21:15:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:50,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 21:15:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 21:15:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:50,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 21:15:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:50,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:50,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030784548] [2022-07-13 21:15:50,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030784548] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:50,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:50,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:50,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695156049] [2022-07-13 21:15:50,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:50,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:50,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:50,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:50,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:50,940 INFO L87 Difference]: Start difference. First operand 5263 states and 7443 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:53,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:53,073 INFO L93 Difference]: Finished difference Result 14380 states and 21609 transitions. [2022-07-13 21:15:53,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:15:53,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-13 21:15:53,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:53,114 INFO L225 Difference]: With dead ends: 14380 [2022-07-13 21:15:53,114 INFO L226 Difference]: Without dead ends: 11230 [2022-07-13 21:15:53,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:15:53,131 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 1083 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:53,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 1454 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:15:53,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11230 states. [2022-07-13 21:15:53,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11230 to 8192. [2022-07-13 21:15:53,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8192 states, 7044 states have (on average 1.4568427030096536) internal successors, (10262), 7104 states have internal predecessors, (10262), 692 states have call successors, (692), 360 states have call predecessors, (692), 454 states have return successors, (1069), 760 states have call predecessors, (1069), 690 states have call successors, (1069) [2022-07-13 21:15:53,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8192 states to 8192 states and 12023 transitions. [2022-07-13 21:15:53,619 INFO L78 Accepts]: Start accepts. Automaton has 8192 states and 12023 transitions. Word has length 101 [2022-07-13 21:15:53,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:53,619 INFO L495 AbstractCegarLoop]: Abstraction has 8192 states and 12023 transitions. [2022-07-13 21:15:53,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:53,619 INFO L276 IsEmpty]: Start isEmpty. Operand 8192 states and 12023 transitions. [2022-07-13 21:15:53,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 21:15:53,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:53,626 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:15:53,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:15:53,627 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:53,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:53,627 INFO L85 PathProgramCache]: Analyzing trace with hash 215558749, now seen corresponding path program 1 times [2022-07-13 21:15:53,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:53,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369095727] [2022-07-13 21:15:53,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:53,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:53,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:53,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 21:15:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:53,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 21:15:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:53,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 21:15:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:53,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 21:15:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:53,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:53,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369095727] [2022-07-13 21:15:53,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369095727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:53,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:53,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:53,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474754208] [2022-07-13 21:15:53,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:53,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:53,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:53,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:53,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:53,714 INFO L87 Difference]: Start difference. First operand 8192 states and 12023 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:56,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:56,120 INFO L93 Difference]: Finished difference Result 25595 states and 39247 transitions. [2022-07-13 21:15:56,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:15:56,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-13 21:15:56,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:56,227 INFO L225 Difference]: With dead ends: 25595 [2022-07-13 21:15:56,228 INFO L226 Difference]: Without dead ends: 19516 [2022-07-13 21:15:56,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:15:56,252 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 1159 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:56,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 1805 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:15:56,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19516 states. [2022-07-13 21:15:57,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19516 to 13873. [2022-07-13 21:15:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13873 states, 12101 states have (on average 1.4868192711346169) internal successors, (17992), 12193 states have internal predecessors, (17992), 1092 states have call successors, (1092), 552 states have call predecessors, (1092), 678 states have return successors, (1987), 1192 states have call predecessors, (1987), 1090 states have call successors, (1987) [2022-07-13 21:15:57,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13873 states to 13873 states and 21071 transitions. [2022-07-13 21:15:57,093 INFO L78 Accepts]: Start accepts. Automaton has 13873 states and 21071 transitions. Word has length 101 [2022-07-13 21:15:57,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:57,093 INFO L495 AbstractCegarLoop]: Abstraction has 13873 states and 21071 transitions. [2022-07-13 21:15:57,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:57,094 INFO L276 IsEmpty]: Start isEmpty. Operand 13873 states and 21071 transitions. [2022-07-13 21:15:57,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 21:15:57,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:57,104 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:15:57,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:15:57,105 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:57,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1054592411, now seen corresponding path program 1 times [2022-07-13 21:15:57,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:57,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476365042] [2022-07-13 21:15:57,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:57,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:57,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:57,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 21:15:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:57,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 21:15:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:57,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 21:15:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:57,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 21:15:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:57,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:57,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476365042] [2022-07-13 21:15:57,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476365042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:57,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:57,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:57,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060422050] [2022-07-13 21:15:57,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:57,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:57,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:57,182 INFO L87 Difference]: Start difference. First operand 13873 states and 21071 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:00,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:00,869 INFO L93 Difference]: Finished difference Result 46954 states and 73429 transitions. [2022-07-13 21:16:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:16:00,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-13 21:16:00,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:01,032 INFO L225 Difference]: With dead ends: 46954 [2022-07-13 21:16:01,033 INFO L226 Difference]: Without dead ends: 35194 [2022-07-13 21:16:01,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:16:01,078 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 1021 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:01,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 1862 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:16:01,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35194 states. [2022-07-13 21:16:02,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35194 to 25362. [2022-07-13 21:16:02,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25362 states, 22374 states have (on average 1.5079109680879592) internal successors, (33738), 22530 states have internal predecessors, (33738), 1860 states have call successors, (1860), 936 states have call predecessors, (1860), 1126 states have return successors, (4277), 2024 states have call predecessors, (4277), 1858 states have call successors, (4277) [2022-07-13 21:16:02,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25362 states to 25362 states and 39875 transitions. [2022-07-13 21:16:02,535 INFO L78 Accepts]: Start accepts. Automaton has 25362 states and 39875 transitions. Word has length 101 [2022-07-13 21:16:02,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:02,535 INFO L495 AbstractCegarLoop]: Abstraction has 25362 states and 39875 transitions. [2022-07-13 21:16:02,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:02,536 INFO L276 IsEmpty]: Start isEmpty. Operand 25362 states and 39875 transitions. [2022-07-13 21:16:02,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 21:16:02,557 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:02,557 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:16:02,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:16:02,557 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:02,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:02,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1081658013, now seen corresponding path program 1 times [2022-07-13 21:16:02,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:02,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335716992] [2022-07-13 21:16:02,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:02,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:02,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:02,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 21:16:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:02,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 21:16:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:02,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 21:16:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:02,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 21:16:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:02,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:02,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335716992] [2022-07-13 21:16:02,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335716992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:02,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:02,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:16:02,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913194914] [2022-07-13 21:16:02,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:02,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:16:02,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:02,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:16:02,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:16:02,798 INFO L87 Difference]: Start difference. First operand 25362 states and 39875 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:07,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:07,869 INFO L93 Difference]: Finished difference Result 86983 states and 139735 transitions. [2022-07-13 21:16:07,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:16:07,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-13 21:16:07,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:08,184 INFO L225 Difference]: With dead ends: 86983 [2022-07-13 21:16:08,184 INFO L226 Difference]: Without dead ends: 63734 [2022-07-13 21:16:08,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:16:08,282 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1040 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:08,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 1793 Invalid, 1779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:16:08,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63734 states. [2022-07-13 21:16:11,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63734 to 48404. [2022-07-13 21:16:11,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48404 states, 43048 states have (on average 1.5227188254971196) internal successors, (65550), 43332 states have internal predecessors, (65550), 3332 states have call successors, (3332), 1704 states have call predecessors, (3332), 2022 states have return successors, (10251), 3624 states have call predecessors, (10251), 3330 states have call successors, (10251) [2022-07-13 21:16:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48404 states to 48404 states and 79133 transitions. [2022-07-13 21:16:11,775 INFO L78 Accepts]: Start accepts. Automaton has 48404 states and 79133 transitions. Word has length 101 [2022-07-13 21:16:11,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:11,775 INFO L495 AbstractCegarLoop]: Abstraction has 48404 states and 79133 transitions. [2022-07-13 21:16:11,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:11,776 INFO L276 IsEmpty]: Start isEmpty. Operand 48404 states and 79133 transitions. [2022-07-13 21:16:11,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 21:16:11,815 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:11,815 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:16:11,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 21:16:11,815 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:11,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1479204833, now seen corresponding path program 1 times [2022-07-13 21:16:11,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:11,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371707469] [2022-07-13 21:16:11,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:11,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:11,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:11,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 21:16:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:11,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 21:16:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:11,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 21:16:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:11,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 21:16:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:11,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:11,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:11,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371707469] [2022-07-13 21:16:11,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371707469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:11,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:11,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:16:11,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662220300] [2022-07-13 21:16:11,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:11,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:16:11,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:11,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:16:11,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:16:11,924 INFO L87 Difference]: Start difference. First operand 48404 states and 79133 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:20,619 INFO L93 Difference]: Finished difference Result 166727 states and 277487 transitions. [2022-07-13 21:16:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:16:20,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-13 21:16:20,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:21,258 INFO L225 Difference]: With dead ends: 166727 [2022-07-13 21:16:21,259 INFO L226 Difference]: Without dead ends: 120436 [2022-07-13 21:16:21,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:16:21,620 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 985 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:21,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 1801 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1744 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:16:21,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120436 states. [2022-07-13 21:16:27,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120436 to 94357. [2022-07-13 21:16:27,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94357 states, 84393 states have (on average 1.5320701953953526) internal successors, (129296), 84933 states have internal predecessors, (129296), 6148 states have call successors, (6148), 3240 states have call predecessors, (6148), 3814 states have return successors, (26445), 6696 states have call predecessors, (26445), 6146 states have call successors, (26445) [2022-07-13 21:16:27,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94357 states to 94357 states and 161889 transitions. [2022-07-13 21:16:27,773 INFO L78 Accepts]: Start accepts. Automaton has 94357 states and 161889 transitions. Word has length 101 [2022-07-13 21:16:27,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:27,773 INFO L495 AbstractCegarLoop]: Abstraction has 94357 states and 161889 transitions. [2022-07-13 21:16:27,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:27,773 INFO L276 IsEmpty]: Start isEmpty. Operand 94357 states and 161889 transitions. [2022-07-13 21:16:28,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 21:16:28,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:28,189 INFO L195 NwaCegarLoop]: 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] [2022-07-13 21:16:28,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 21:16:28,189 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:28,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:28,189 INFO L85 PathProgramCache]: Analyzing trace with hash -591981987, now seen corresponding path program 1 times [2022-07-13 21:16:28,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:28,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593978517] [2022-07-13 21:16:28,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:28,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:28,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:28,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 21:16:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:28,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 21:16:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:28,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 21:16:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:28,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 21:16:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:28,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:28,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593978517] [2022-07-13 21:16:28,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593978517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:28,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:28,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:16:28,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578400500] [2022-07-13 21:16:28,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:28,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:16:28,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:28,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:16:28,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:16:28,330 INFO L87 Difference]: Start difference. First operand 94357 states and 161889 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:43,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:43,942 INFO L93 Difference]: Finished difference Result 259607 states and 429231 transitions. [2022-07-13 21:16:43,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:16:43,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-13 21:16:43,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:44,573 INFO L225 Difference]: With dead ends: 259607 [2022-07-13 21:16:44,573 INFO L226 Difference]: Without dead ends: 167364 [2022-07-13 21:16:45,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:16:45,041 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 660 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:45,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 1475 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:16:45,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167364 states.