./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.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_2.cil-1+token_ring.10.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 6d6da8f3ee43e0b2f144002fad1e1be3bc4062b8e0f7b0d6768d1ce0f0c5101f --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:12:19,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:12:19,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:12:20,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:12:20,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:12:20,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:12:20,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:12:20,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:12:20,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:12:20,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:12:20,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:12:20,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:12:20,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:12:20,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:12:20,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:12:20,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:12:20,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:12:20,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:12:20,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:12:20,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:12:20,045 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:12:20,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:12:20,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:12:20,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:12:20,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:12:20,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:12:20,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:12:20,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:12:20,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:12:20,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:12:20,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:12:20,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:12:20,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:12:20,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:12:20,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:12:20,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:12:20,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:12:20,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:12:20,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:12:20,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:12:20,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:12:20,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:12:20,060 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:12:20,083 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:12:20,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:12:20,084 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:12:20,084 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:12:20,085 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:12:20,085 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:12:20,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:12:20,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:12:20,086 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:12:20,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:12:20,087 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:12:20,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:12:20,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:12:20,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:12:20,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:12:20,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:12:20,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:12:20,087 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:12:20,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:12:20,088 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:12:20,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:12:20,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:12:20,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:12:20,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:12:20,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:12:20,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:12:20,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:12:20,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:12:20,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:12:20,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:12:20,090 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:12:20,090 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:12:20,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:12:20,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d6da8f3ee43e0b2f144002fad1e1be3bc4062b8e0f7b0d6768d1ce0f0c5101f [2022-07-13 21:12:20,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:12:20,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:12:20,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:12:20,293 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:12:20,294 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:12:20,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2022-07-13 21:12:20,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e0040b4e/b4960cfc2f484321a15fc9024d876ce1/FLAG055e2e7ae [2022-07-13 21:12:20,754 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:12:20,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2022-07-13 21:12:20,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e0040b4e/b4960cfc2f484321a15fc9024d876ce1/FLAG055e2e7ae [2022-07-13 21:12:20,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e0040b4e/b4960cfc2f484321a15fc9024d876ce1 [2022-07-13 21:12:20,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:12:20,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:12:20,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:12:20,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:12:20,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:12:20,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:12:20" (1/1) ... [2022-07-13 21:12:20,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e4a3a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:12:20, skipping insertion in model container [2022-07-13 21:12:20,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:12:20" (1/1) ... [2022-07-13 21:12:20,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:12:20,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:12:21,044 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_2.cil-1+token_ring.10.cil-1.c[914,927] [2022-07-13 21:12:21,089 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_2.cil-1+token_ring.10.cil-1.c[7115,7128] [2022-07-13 21:12:21,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:12:21,157 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:12:21,166 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_2.cil-1+token_ring.10.cil-1.c[914,927] [2022-07-13 21:12:21,178 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_2.cil-1+token_ring.10.cil-1.c[7115,7128] [2022-07-13 21:12:21,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:12:21,230 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:12:21,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:12:21 WrapperNode [2022-07-13 21:12:21,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:12:21,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:12:21,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:12:21,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:12:21,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:12:21" (1/1) ... [2022-07-13 21:12:21,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:12:21" (1/1) ... [2022-07-13 21:12:21,329 INFO L137 Inliner]: procedures = 73, calls = 88, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 929 [2022-07-13 21:12:21,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:12:21,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:12:21,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:12:21,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:12:21,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:12:21" (1/1) ... [2022-07-13 21:12:21,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:12:21" (1/1) ... [2022-07-13 21:12:21,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:12:21" (1/1) ... [2022-07-13 21:12:21,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:12:21" (1/1) ... [2022-07-13 21:12:21,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:12:21" (1/1) ... [2022-07-13 21:12:21,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:12:21" (1/1) ... [2022-07-13 21:12:21,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:12:21" (1/1) ... [2022-07-13 21:12:21,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:12:21,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:12:21,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:12:21,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:12:21,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:12:21" (1/1) ... [2022-07-13 21:12:21,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:12:21,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:12:21,414 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 21:12:21,417 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 21:12:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:12:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 21:12:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 21:12:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-13 21:12:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-13 21:12:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-13 21:12:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-13 21:12:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-13 21:12:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-13 21:12:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-13 21:12:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-13 21:12:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-13 21:12:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-13 21:12:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-13 21:12:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-13 21:12:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-13 21:12:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-13 21:12:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-13 21:12:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-13 21:12:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-13 21:12:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-13 21:12:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-13 21:12:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-13 21:12:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:12:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-13 21:12:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-13 21:12:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-13 21:12:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-13 21:12:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:12:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:12:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-13 21:12:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-13 21:12:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-13 21:12:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-13 21:12:21,523 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:12:21,524 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:12:22,059 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:12:22,068 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:12:22,068 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-07-13 21:12:22,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:12:22 BoogieIcfgContainer [2022-07-13 21:12:22,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:12:22,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:12:22,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:12:22,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:12:22,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:12:20" (1/3) ... [2022-07-13 21:12:22,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62358f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:12:22, skipping insertion in model container [2022-07-13 21:12:22,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:12:21" (2/3) ... [2022-07-13 21:12:22,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62358f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:12:22, skipping insertion in model container [2022-07-13 21:12:22,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:12:22" (3/3) ... [2022-07-13 21:12:22,076 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2022-07-13 21:12:22,085 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:12:22,085 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:12:22,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:12:22,129 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@25c95e15, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a40767 [2022-07-13 21:12:22,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:12:22,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 441 states, 383 states have (on average 1.6370757180156659) internal successors, (627), 391 states have internal predecessors, (627), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2022-07-13 21:12:22,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:12:22,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:22,142 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 21:12:22,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:22,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:22,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1192357691, now seen corresponding path program 1 times [2022-07-13 21:12:22,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:22,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116311547] [2022-07-13 21:12:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:22,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:22,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:22,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:22,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:22,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:22,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:22,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:22,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:22,373 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 21:12:22,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:22,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116311547] [2022-07-13 21:12:22,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116311547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:22,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:22,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:12:22,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875945197] [2022-07-13 21:12:22,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:22,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:12:22,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:22,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:12:22,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:12:22,414 INFO L87 Difference]: Start difference. First operand has 441 states, 383 states have (on average 1.6370757180156659) internal successors, (627), 391 states have internal predecessors, (627), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) 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 21:12:23,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:23,365 INFO L93 Difference]: Finished difference Result 990 states and 1576 transitions. [2022-07-13 21:12:23,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:12:23,367 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 21:12:23,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:23,377 INFO L225 Difference]: With dead ends: 990 [2022-07-13 21:12:23,377 INFO L226 Difference]: Without dead ends: 565 [2022-07-13 21:12:23,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:12:23,397 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 1083 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:23,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 2299 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:12:23,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-07-13 21:12:23,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 526. [2022-07-13 21:12:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 451 states have (on average 1.5210643015521064) internal successors, (686), 458 states have internal predecessors, (686), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-07-13 21:12:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 789 transitions. [2022-07-13 21:12:23,453 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 789 transitions. Word has length 65 [2022-07-13 21:12:23,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:23,453 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 789 transitions. [2022-07-13 21:12:23,454 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 21:12:23,454 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 789 transitions. [2022-07-13 21:12:23,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:12:23,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:23,456 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 21:12:23,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:12:23,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:23,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:23,457 INFO L85 PathProgramCache]: Analyzing trace with hash -929120350, now seen corresponding path program 1 times [2022-07-13 21:12:23,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:23,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175864058] [2022-07-13 21:12:23,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:23,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:23,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:23,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:23,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:23,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:23,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:23,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:23,548 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 21:12:23,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:23,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175864058] [2022-07-13 21:12:23,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175864058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:23,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:23,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:12:23,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578431858] [2022-07-13 21:12:23,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:23,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:12:23,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:23,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:12:23,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:12:23,551 INFO L87 Difference]: Start difference. First operand 526 states and 789 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 21:12:24,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:24,393 INFO L93 Difference]: Finished difference Result 873 states and 1266 transitions. [2022-07-13 21:12:24,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:12:24,393 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 21:12:24,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:24,397 INFO L225 Difference]: With dead ends: 873 [2022-07-13 21:12:24,397 INFO L226 Difference]: Without dead ends: 696 [2022-07-13 21:12:24,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-13 21:12:24,398 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 1620 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:24,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 2137 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:12:24,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-07-13 21:12:24,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 622. [2022-07-13 21:12:24,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 527 states have (on average 1.4990512333965844) internal successors, (790), 536 states have internal predecessors, (790), 62 states have call successors, (62), 29 states have call predecessors, (62), 31 states have return successors, (71), 60 states have call predecessors, (71), 58 states have call successors, (71) [2022-07-13 21:12:24,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 923 transitions. [2022-07-13 21:12:24,426 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 923 transitions. Word has length 65 [2022-07-13 21:12:24,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:24,426 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 923 transitions. [2022-07-13 21:12:24,426 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 21:12:24,426 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 923 transitions. [2022-07-13 21:12:24,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:12:24,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:24,428 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 21:12:24,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:12:24,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:24,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:24,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1337260836, now seen corresponding path program 1 times [2022-07-13 21:12:24,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:24,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157266239] [2022-07-13 21:12:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:24,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:24,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:24,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:24,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:24,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:24,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:24,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:24,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:24,524 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 21:12:24,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:24,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157266239] [2022-07-13 21:12:24,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157266239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:24,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:24,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:12:24,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425311428] [2022-07-13 21:12:24,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:24,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:12:24,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:24,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:12:24,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:12:24,527 INFO L87 Difference]: Start difference. First operand 622 states and 923 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 21:12:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:25,481 INFO L93 Difference]: Finished difference Result 923 states and 1337 transitions. [2022-07-13 21:12:25,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:12:25,482 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 65 [2022-07-13 21:12:25,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:25,486 INFO L225 Difference]: With dead ends: 923 [2022-07-13 21:12:25,486 INFO L226 Difference]: Without dead ends: 656 [2022-07-13 21:12:25,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:12:25,489 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 851 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:25,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 2584 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:12:25,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-07-13 21:12:25,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 627. [2022-07-13 21:12:25,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 531 states have (on average 1.4915254237288136) internal successors, (792), 540 states have internal predecessors, (792), 62 states have call successors, (62), 29 states have call predecessors, (62), 32 states have return successors, (72), 61 states have call predecessors, (72), 58 states have call successors, (72) [2022-07-13 21:12:25,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 926 transitions. [2022-07-13 21:12:25,510 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 926 transitions. Word has length 65 [2022-07-13 21:12:25,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:25,511 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 926 transitions. [2022-07-13 21:12:25,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 21:12:25,511 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 926 transitions. [2022-07-13 21:12:25,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:12:25,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:25,513 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 21:12:25,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:12:25,514 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:25,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:25,514 INFO L85 PathProgramCache]: Analyzing trace with hash 307901538, now seen corresponding path program 1 times [2022-07-13 21:12:25,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:25,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76780593] [2022-07-13 21:12:25,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:25,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:25,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:25,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:25,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:25,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:25,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:25,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:25,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:25,616 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 21:12:25,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:25,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76780593] [2022-07-13 21:12:25,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76780593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:25,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:25,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:12:25,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447855073] [2022-07-13 21:12:25,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:25,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:12:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:25,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:12:25,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:12:25,619 INFO L87 Difference]: Start difference. First operand 627 states and 926 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 21:12:26,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:26,496 INFO L93 Difference]: Finished difference Result 945 states and 1359 transitions. [2022-07-13 21:12:26,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:12:26,497 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 65 [2022-07-13 21:12:26,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:26,499 INFO L225 Difference]: With dead ends: 945 [2022-07-13 21:12:26,499 INFO L226 Difference]: Without dead ends: 673 [2022-07-13 21:12:26,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:12:26,501 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 852 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:26,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 2581 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:12:26,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-07-13 21:12:26,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 642. [2022-07-13 21:12:26,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 543 states have (on average 1.4806629834254144) internal successors, (804), 552 states have internal predecessors, (804), 62 states have call successors, (62), 29 states have call predecessors, (62), 35 states have return successors, (75), 64 states have call predecessors, (75), 58 states have call successors, (75) [2022-07-13 21:12:26,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 941 transitions. [2022-07-13 21:12:26,517 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 941 transitions. Word has length 65 [2022-07-13 21:12:26,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:26,517 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 941 transitions. [2022-07-13 21:12:26,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 21:12:26,518 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 941 transitions. [2022-07-13 21:12:26,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:12:26,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:26,520 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 21:12:26,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:12:26,520 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:26,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:26,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1694104932, now seen corresponding path program 1 times [2022-07-13 21:12:26,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:26,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154100910] [2022-07-13 21:12:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:26,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:26,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:26,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:26,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:26,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:26,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:26,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:26,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:26,589 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 21:12:26,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:26,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154100910] [2022-07-13 21:12:26,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154100910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:26,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:26,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:12:26,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709997763] [2022-07-13 21:12:26,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:26,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:12:26,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:26,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:12:26,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:12:26,598 INFO L87 Difference]: Start difference. First operand 642 states and 941 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 21:12:27,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:27,436 INFO L93 Difference]: Finished difference Result 1034 states and 1452 transitions. [2022-07-13 21:12:27,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:12:27,436 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 21:12:27,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:27,439 INFO L225 Difference]: With dead ends: 1034 [2022-07-13 21:12:27,440 INFO L226 Difference]: Without dead ends: 749 [2022-07-13 21:12:27,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-13 21:12:27,441 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 1286 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:27,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 2251 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:12:27,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-07-13 21:12:27,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 654. [2022-07-13 21:12:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 553 states have (on average 1.4719710669077757) internal successors, (814), 562 states have internal predecessors, (814), 63 states have call successors, (63), 30 states have call predecessors, (63), 36 states have return successors, (74), 65 states have call predecessors, (74), 59 states have call successors, (74) [2022-07-13 21:12:27,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 951 transitions. [2022-07-13 21:12:27,462 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 951 transitions. Word has length 65 [2022-07-13 21:12:27,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:27,462 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 951 transitions. [2022-07-13 21:12:27,463 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 21:12:27,463 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 951 transitions. [2022-07-13 21:12:27,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:12:27,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:27,464 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 21:12:27,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:12:27,465 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:27,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:27,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1560091426, now seen corresponding path program 1 times [2022-07-13 21:12:27,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:27,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397342572] [2022-07-13 21:12:27,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:27,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:27,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:27,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:27,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:27,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:27,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:27,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:27,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:27,552 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 21:12:27,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:27,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397342572] [2022-07-13 21:12:27,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397342572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:27,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:27,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:12:27,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778386780] [2022-07-13 21:12:27,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:27,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:12:27,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:27,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:12:27,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:12:27,554 INFO L87 Difference]: Start difference. First operand 654 states and 951 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 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 21:12:27,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:27,975 INFO L93 Difference]: Finished difference Result 1296 states and 1798 transitions. [2022-07-13 21:12:27,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:12:27,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 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 21:12:27,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:27,980 INFO L225 Difference]: With dead ends: 1296 [2022-07-13 21:12:27,980 INFO L226 Difference]: Without dead ends: 1000 [2022-07-13 21:12:27,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:12:27,983 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 1572 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:27,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 1574 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:12:27,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2022-07-13 21:12:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 944. [2022-07-13 21:12:28,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 777 states have (on average 1.416988416988417) internal successors, (1101), 793 states have internal predecessors, (1101), 98 states have call successors, (98), 52 states have call predecessors, (98), 67 states have return successors, (131), 105 states have call predecessors, (131), 94 states have call successors, (131) [2022-07-13 21:12:28,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1330 transitions. [2022-07-13 21:12:28,018 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1330 transitions. Word has length 65 [2022-07-13 21:12:28,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:28,019 INFO L495 AbstractCegarLoop]: Abstraction has 944 states and 1330 transitions. [2022-07-13 21:12:28,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 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 21:12:28,019 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1330 transitions. [2022-07-13 21:12:28,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:12:28,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:28,021 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 21:12:28,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:12:28,021 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:28,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:28,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1800845042, now seen corresponding path program 1 times [2022-07-13 21:12:28,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:28,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535971351] [2022-07-13 21:12:28,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:28,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:28,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:28,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:28,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:28,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:28,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:28,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:28,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:28,082 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 21:12:28,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:28,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535971351] [2022-07-13 21:12:28,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535971351] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:28,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:28,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:12:28,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473514134] [2022-07-13 21:12:28,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:28,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:12:28,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:28,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:12:28,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:12:28,084 INFO L87 Difference]: Start difference. First operand 944 states and 1330 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:12:28,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:28,570 INFO L93 Difference]: Finished difference Result 2147 states and 2901 transitions. [2022-07-13 21:12:28,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:12:28,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-13 21:12:28,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:28,576 INFO L225 Difference]: With dead ends: 2147 [2022-07-13 21:12:28,576 INFO L226 Difference]: Without dead ends: 1540 [2022-07-13 21:12:28,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:12:28,580 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 752 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:28,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 1836 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 21:12:28,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2022-07-13 21:12:28,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1425. [2022-07-13 21:12:28,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1156 states have (on average 1.3685121107266436) internal successors, (1582), 1175 states have internal predecessors, (1582), 143 states have call successors, (143), 96 states have call predecessors, (143), 124 states have return successors, (203), 160 states have call predecessors, (203), 139 states have call successors, (203) [2022-07-13 21:12:28,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1928 transitions. [2022-07-13 21:12:28,619 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1928 transitions. Word has length 66 [2022-07-13 21:12:28,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:28,619 INFO L495 AbstractCegarLoop]: Abstraction has 1425 states and 1928 transitions. [2022-07-13 21:12:28,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:12:28,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1928 transitions. [2022-07-13 21:12:28,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:12:28,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:28,623 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 21:12:28,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:12:28,623 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:28,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:28,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1035882595, now seen corresponding path program 1 times [2022-07-13 21:12:28,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:28,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797790285] [2022-07-13 21:12:28,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:28,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:28,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:28,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:28,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:28,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:28,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:28,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:28,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:28,680 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 21:12:28,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:28,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797790285] [2022-07-13 21:12:28,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797790285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:28,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:28,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:12:28,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765306714] [2022-07-13 21:12:28,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:28,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:12:28,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:28,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:12:28,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:12:28,682 INFO L87 Difference]: Start difference. First operand 1425 states and 1928 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:12:28,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:28,982 INFO L93 Difference]: Finished difference Result 3613 states and 4734 transitions. [2022-07-13 21:12:28,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:12:28,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-13 21:12:28,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:28,991 INFO L225 Difference]: With dead ends: 3613 [2022-07-13 21:12:28,991 INFO L226 Difference]: Without dead ends: 2545 [2022-07-13 21:12:28,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-13 21:12:29,000 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 1573 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:29,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 1280 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 21:12:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2022-07-13 21:12:29,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 2287. [2022-07-13 21:12:29,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 1822 states have (on average 1.3221734357848518) internal successors, (2409), 1851 states have internal predecessors, (2409), 241 states have call successors, (241), 180 states have call predecessors, (241), 222 states have return successors, (339), 262 states have call predecessors, (339), 237 states have call successors, (339) [2022-07-13 21:12:29,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 2989 transitions. [2022-07-13 21:12:29,133 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 2989 transitions. Word has length 66 [2022-07-13 21:12:29,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:29,133 INFO L495 AbstractCegarLoop]: Abstraction has 2287 states and 2989 transitions. [2022-07-13 21:12:29,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:12:29,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 2989 transitions. [2022-07-13 21:12:29,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 21:12:29,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:29,134 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] [2022-07-13 21:12:29,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:12:29,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:29,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:29,135 INFO L85 PathProgramCache]: Analyzing trace with hash 283948209, now seen corresponding path program 1 times [2022-07-13 21:12:29,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:29,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721845083] [2022-07-13 21:12:29,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:29,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:29,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:29,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:29,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:29,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:29,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:29,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:29,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:29,176 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 21:12:29,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:29,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721845083] [2022-07-13 21:12:29,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721845083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:29,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:29,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:12:29,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688224743] [2022-07-13 21:12:29,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:29,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:12:29,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:29,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:12:29,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:12:29,177 INFO L87 Difference]: Start difference. First operand 2287 states and 2989 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:12:29,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:29,471 INFO L93 Difference]: Finished difference Result 5197 states and 6639 transitions. [2022-07-13 21:12:29,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:12:29,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-13 21:12:29,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:29,484 INFO L225 Difference]: With dead ends: 5197 [2022-07-13 21:12:29,484 INFO L226 Difference]: Without dead ends: 3267 [2022-07-13 21:12:29,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:12:29,488 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 1554 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:29,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 1316 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 21:12:29,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2022-07-13 21:12:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 3019. [2022-07-13 21:12:29,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 2390 states have (on average 1.302510460251046) internal successors, (3113), 2427 states have internal predecessors, (3113), 321 states have call successors, (321), 250 states have call predecessors, (321), 306 states have return successors, (448), 348 states have call predecessors, (448), 317 states have call successors, (448) [2022-07-13 21:12:29,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 3882 transitions. [2022-07-13 21:12:29,603 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 3882 transitions. Word has length 72 [2022-07-13 21:12:29,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:29,604 INFO L495 AbstractCegarLoop]: Abstraction has 3019 states and 3882 transitions. [2022-07-13 21:12:29,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:12:29,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 3882 transitions. [2022-07-13 21:12:29,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-13 21:12:29,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:29,606 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:12:29,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:12:29,606 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:29,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:29,606 INFO L85 PathProgramCache]: Analyzing trace with hash -304350912, now seen corresponding path program 1 times [2022-07-13 21:12:29,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:29,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960512621] [2022-07-13 21:12:29,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:29,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:29,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:29,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:29,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:29,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:29,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:29,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:29,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:12:29,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:29,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960512621] [2022-07-13 21:12:29,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960512621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:29,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:29,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:12:29,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956118139] [2022-07-13 21:12:29,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:29,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:12:29,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:29,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:12:29,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:12:29,666 INFO L87 Difference]: Start difference. First operand 3019 states and 3882 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 21:12:30,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:30,048 INFO L93 Difference]: Finished difference Result 3793 states and 4813 transitions. [2022-07-13 21:12:30,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:12:30,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-13 21:12:30,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:30,062 INFO L225 Difference]: With dead ends: 3793 [2022-07-13 21:12:30,062 INFO L226 Difference]: Without dead ends: 3790 [2022-07-13 21:12:30,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:12:30,064 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 1877 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1887 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:30,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1887 Valid, 1598 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:12:30,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2022-07-13 21:12:30,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3513. [2022-07-13 21:12:30,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 2775 states have (on average 1.2918918918918918) internal successors, (3585), 2817 states have internal predecessors, (3585), 371 states have call successors, (371), 294 states have call predecessors, (371), 365 states have return successors, (527), 408 states have call predecessors, (527), 368 states have call successors, (527) [2022-07-13 21:12:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4483 transitions. [2022-07-13 21:12:30,202 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4483 transitions. Word has length 73 [2022-07-13 21:12:30,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:30,203 INFO L495 AbstractCegarLoop]: Abstraction has 3513 states and 4483 transitions. [2022-07-13 21:12:30,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 21:12:30,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4483 transitions. [2022-07-13 21:12:30,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-13 21:12:30,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:30,205 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:12:30,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:12:30,205 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:30,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:30,206 INFO L85 PathProgramCache]: Analyzing trace with hash -846258469, now seen corresponding path program 1 times [2022-07-13 21:12:30,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:30,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632046188] [2022-07-13 21:12:30,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:30,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:30,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:30,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:30,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:30,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:30,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:30,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:30,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:12:30,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:30,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632046188] [2022-07-13 21:12:30,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632046188] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:12:30,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993232215] [2022-07-13 21:12:30,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:30,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:12:30,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:12:30,312 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:12:30,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 21:12:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:30,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 21:12:30,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:12:30,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:12:30,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 21:12:30,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:12:30,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993232215] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 21:12:30,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 21:12:30,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-13 21:12:30,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622094051] [2022-07-13 21:12:30,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 21:12:30,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:12:30,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:30,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:12:30,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:12:30,732 INFO L87 Difference]: Start difference. First operand 3513 states and 4483 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 21:12:32,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:32,157 INFO L93 Difference]: Finished difference Result 7954 states and 9969 transitions. [2022-07-13 21:12:32,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 21:12:32,157 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-13 21:12:32,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:32,180 INFO L225 Difference]: With dead ends: 7954 [2022-07-13 21:12:32,180 INFO L226 Difference]: Without dead ends: 7951 [2022-07-13 21:12:32,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-07-13 21:12:32,183 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 1783 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 2045 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 2045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:32,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1853 Valid, 3016 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 2045 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:12:32,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7951 states. [2022-07-13 21:12:32,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7951 to 5303. [2022-07-13 21:12:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5303 states, 4179 states have (on average 1.2828427853553481) internal successors, (5361), 4243 states have internal predecessors, (5361), 555 states have call successors, (555), 452 states have call predecessors, (555), 567 states have return successors, (805), 614 states have call predecessors, (805), 552 states have call successors, (805) [2022-07-13 21:12:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5303 states to 5303 states and 6721 transitions. [2022-07-13 21:12:32,426 INFO L78 Accepts]: Start accepts. Automaton has 5303 states and 6721 transitions. Word has length 74 [2022-07-13 21:12:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:32,427 INFO L495 AbstractCegarLoop]: Abstraction has 5303 states and 6721 transitions. [2022-07-13 21:12:32,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 21:12:32,427 INFO L276 IsEmpty]: Start isEmpty. Operand 5303 states and 6721 transitions. [2022-07-13 21:12:32,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 21:12:32,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:32,428 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:12:32,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 21:12:32,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 21:12:32,646 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:32,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:32,646 INFO L85 PathProgramCache]: Analyzing trace with hash -931904896, now seen corresponding path program 2 times [2022-07-13 21:12:32,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:32,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51236863] [2022-07-13 21:12:32,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:32,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:32,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:32,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:32,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:32,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:32,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:32,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:32,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:12:32,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:32,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51236863] [2022-07-13 21:12:32,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51236863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:32,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:32,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:12:32,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971828456] [2022-07-13 21:12:32,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:32,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:12:32,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:32,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:12:32,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:12:32,696 INFO L87 Difference]: Start difference. First operand 5303 states and 6721 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 21:12:33,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:33,156 INFO L93 Difference]: Finished difference Result 7985 states and 10094 transitions. [2022-07-13 21:12:33,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:12:33,157 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), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-13 21:12:33,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:33,167 INFO L225 Difference]: With dead ends: 7985 [2022-07-13 21:12:33,168 INFO L226 Difference]: Without dead ends: 3910 [2022-07-13 21:12:33,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:12:33,173 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1160 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:33,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 1727 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:12:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2022-07-13 21:12:33,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 3675. [2022-07-13 21:12:33,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3675 states, 2907 states have (on average 1.2731338149294806) internal successors, (3701), 2949 states have internal predecessors, (3701), 387 states have call successors, (387), 308 states have call predecessors, (387), 379 states have return successors, (531), 424 states have call predecessors, (531), 384 states have call successors, (531) [2022-07-13 21:12:33,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 4619 transitions. [2022-07-13 21:12:33,299 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 4619 transitions. Word has length 77 [2022-07-13 21:12:33,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:33,299 INFO L495 AbstractCegarLoop]: Abstraction has 3675 states and 4619 transitions. [2022-07-13 21:12:33,299 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), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 21:12:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 4619 transitions. [2022-07-13 21:12:33,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-13 21:12:33,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:33,301 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:12:33,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:12:33,301 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:33,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:33,302 INFO L85 PathProgramCache]: Analyzing trace with hash -840062387, now seen corresponding path program 1 times [2022-07-13 21:12:33,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:33,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100563607] [2022-07-13 21:12:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:33,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:33,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:33,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:33,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:33,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:33,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:33,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:33,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:33,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 21:12:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:12:33,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:33,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100563607] [2022-07-13 21:12:33,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100563607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:33,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:33,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:12:33,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421775978] [2022-07-13 21:12:33,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:33,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:12:33,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:33,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:12:33,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:12:33,352 INFO L87 Difference]: Start difference. First operand 3675 states and 4619 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 21:12:34,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:34,572 INFO L93 Difference]: Finished difference Result 10547 states and 13036 transitions. [2022-07-13 21:12:34,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 21:12:34,582 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-13 21:12:34,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:34,603 INFO L225 Difference]: With dead ends: 10547 [2022-07-13 21:12:34,603 INFO L226 Difference]: Without dead ends: 5910 [2022-07-13 21:12:34,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-13 21:12:34,612 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 980 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:34,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 2340 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:12:34,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5910 states. [2022-07-13 21:12:34,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5910 to 5590. [2022-07-13 21:12:34,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 4365 states have (on average 1.2426116838487973) internal successors, (5424), 4450 states have internal predecessors, (5424), 591 states have call successors, (591), 482 states have call predecessors, (591), 632 states have return successors, (913), 664 states have call predecessors, (913), 588 states have call successors, (913) [2022-07-13 21:12:34,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 6928 transitions. [2022-07-13 21:12:34,839 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 6928 transitions. Word has length 84 [2022-07-13 21:12:34,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:34,839 INFO L495 AbstractCegarLoop]: Abstraction has 5590 states and 6928 transitions. [2022-07-13 21:12:34,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 21:12:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 6928 transitions. [2022-07-13 21:12:34,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 21:12:34,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:34,843 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-07-13 21:12:34,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:12:34,843 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:34,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:34,844 INFO L85 PathProgramCache]: Analyzing trace with hash 670528542, now seen corresponding path program 1 times [2022-07-13 21:12:34,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:34,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255468392] [2022-07-13 21:12:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:34,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:34,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:34,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:34,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:34,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:34,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:34,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:34,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:34,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 21:12:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 21:12:34,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:34,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255468392] [2022-07-13 21:12:34,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255468392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:34,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:34,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:12:34,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850846696] [2022-07-13 21:12:34,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:34,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:12:34,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:34,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:12:34,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:12:34,911 INFO L87 Difference]: Start difference. First operand 5590 states and 6928 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 21:12:35,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:35,959 INFO L93 Difference]: Finished difference Result 9593 states and 11768 transitions. [2022-07-13 21:12:35,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 21:12:35,960 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 93 [2022-07-13 21:12:35,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:35,978 INFO L225 Difference]: With dead ends: 9593 [2022-07-13 21:12:35,978 INFO L226 Difference]: Without dead ends: 5000 [2022-07-13 21:12:35,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-13 21:12:35,986 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 2198 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:35,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2242 Valid, 2062 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:12:35,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5000 states. [2022-07-13 21:12:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5000 to 4666. [2022-07-13 21:12:36,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4666 states, 3654 states have (on average 1.2378215654077722) internal successors, (4523), 3721 states have internal predecessors, (4523), 492 states have call successors, (492), 397 states have call predecessors, (492), 518 states have return successors, (691), 554 states have call predecessors, (691), 489 states have call successors, (691) [2022-07-13 21:12:36,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4666 states to 4666 states and 5706 transitions. [2022-07-13 21:12:36,179 INFO L78 Accepts]: Start accepts. Automaton has 4666 states and 5706 transitions. Word has length 93 [2022-07-13 21:12:36,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:36,179 INFO L495 AbstractCegarLoop]: Abstraction has 4666 states and 5706 transitions. [2022-07-13 21:12:36,179 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 21:12:36,179 INFO L276 IsEmpty]: Start isEmpty. Operand 4666 states and 5706 transitions. [2022-07-13 21:12:36,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:12:36,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:36,184 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:12:36,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:12:36,184 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:36,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:36,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1155770855, now seen corresponding path program 1 times [2022-07-13 21:12:36,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:36,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930722174] [2022-07-13 21:12:36,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:36,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 21:12:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 21:12:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 21:12:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 21:12:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:12:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 21:12:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 21:12:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-13 21:12:36,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:36,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930722174] [2022-07-13 21:12:36,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930722174] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:12:36,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657247818] [2022-07-13 21:12:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:36,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:12:36,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:12:36,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:12:36,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 21:12:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:36,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 21:12:36,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:12:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 21:12:36,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:12:36,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657247818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:36,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:12:36,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-13 21:12:36,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961347973] [2022-07-13 21:12:36,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:36,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:12:36,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:36,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:12:36,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 21:12:36,477 INFO L87 Difference]: Start difference. First operand 4666 states and 5706 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 21:12:36,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:36,675 INFO L93 Difference]: Finished difference Result 6832 states and 8329 transitions. [2022-07-13 21:12:36,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:12:36,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-13 21:12:36,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:36,683 INFO L225 Difference]: With dead ends: 6832 [2022-07-13 21:12:36,683 INFO L226 Difference]: Without dead ends: 2527 [2022-07-13 21:12:36,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:12:36,690 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 34 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:36,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3230 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:12:36,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2022-07-13 21:12:36,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 2402. [2022-07-13 21:12:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 1967 states have (on average 1.2552109811896288) internal successors, (2469), 1983 states have internal predecessors, (2469), 216 states have call successors, (216), 163 states have call predecessors, (216), 217 states have return successors, (298), 256 states have call predecessors, (298), 213 states have call successors, (298) [2022-07-13 21:12:36,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 2983 transitions. [2022-07-13 21:12:36,817 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 2983 transitions. Word has length 145 [2022-07-13 21:12:36,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:36,818 INFO L495 AbstractCegarLoop]: Abstraction has 2402 states and 2983 transitions. [2022-07-13 21:12:36,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 21:12:36,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 2983 transitions. [2022-07-13 21:12:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-13 21:12:36,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:36,821 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:12:36,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 21:12:37,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-13 21:12:37,038 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:37,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:37,039 INFO L85 PathProgramCache]: Analyzing trace with hash -707927933, now seen corresponding path program 1 times [2022-07-13 21:12:37,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:37,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638016068] [2022-07-13 21:12:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:37,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 21:12:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 21:12:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 21:12:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 21:12:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 21:12:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 21:12:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 21:12:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,092 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-13 21:12:37,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:37,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638016068] [2022-07-13 21:12:37,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638016068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:37,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:37,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:12:37,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154760736] [2022-07-13 21:12:37,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:37,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:12:37,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:37,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:12:37,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:12:37,093 INFO L87 Difference]: Start difference. First operand 2402 states and 2983 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 21:12:37,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:37,563 INFO L93 Difference]: Finished difference Result 2467 states and 3051 transitions. [2022-07-13 21:12:37,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:12:37,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-07-13 21:12:37,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:37,567 INFO L225 Difference]: With dead ends: 2467 [2022-07-13 21:12:37,567 INFO L226 Difference]: Without dead ends: 2024 [2022-07-13 21:12:37,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:12:37,569 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 673 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:37,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 1778 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 21:12:37,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2022-07-13 21:12:37,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 1962. [2022-07-13 21:12:37,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1623 states have (on average 1.2723351817621689) internal successors, (2065), 1636 states have internal predecessors, (2065), 170 states have call successors, (170), 123 states have call predecessors, (170), 167 states have return successors, (234), 203 states have call predecessors, (234), 167 states have call successors, (234) [2022-07-13 21:12:37,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2469 transitions. [2022-07-13 21:12:37,630 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2469 transitions. Word has length 147 [2022-07-13 21:12:37,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:37,630 INFO L495 AbstractCegarLoop]: Abstraction has 1962 states and 2469 transitions. [2022-07-13 21:12:37,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 21:12:37,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2469 transitions. [2022-07-13 21:12:37,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-13 21:12:37,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:37,633 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:12:37,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:12:37,634 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:37,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:37,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1913489485, now seen corresponding path program 1 times [2022-07-13 21:12:37,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:37,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968027715] [2022-07-13 21:12:37,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:37,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:12:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:12:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 21:12:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 21:12:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 21:12:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 21:12:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 21:12:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-13 21:12:37,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:37,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968027715] [2022-07-13 21:12:37,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968027715] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:37,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:37,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:12:37,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939704026] [2022-07-13 21:12:37,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:37,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:12:37,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:37,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:12:37,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:12:37,698 INFO L87 Difference]: Start difference. First operand 1962 states and 2469 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 21:12:38,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:38,268 INFO L93 Difference]: Finished difference Result 3439 states and 4268 transitions. [2022-07-13 21:12:38,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:12:38,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-07-13 21:12:38,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:38,274 INFO L225 Difference]: With dead ends: 3439 [2022-07-13 21:12:38,274 INFO L226 Difference]: Without dead ends: 2063 [2022-07-13 21:12:38,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:12:38,277 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 600 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:38,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 2262 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:12:38,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2022-07-13 21:12:38,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 1871. [2022-07-13 21:12:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1554 states have (on average 1.274131274131274) internal successors, (1980), 1568 states have internal predecessors, (1980), 161 states have call successors, (161), 118 states have call predecessors, (161), 154 states have return successors, (218), 185 states have call predecessors, (218), 158 states have call successors, (218) [2022-07-13 21:12:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 2359 transitions. [2022-07-13 21:12:38,354 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 2359 transitions. Word has length 159 [2022-07-13 21:12:38,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:38,355 INFO L495 AbstractCegarLoop]: Abstraction has 1871 states and 2359 transitions. [2022-07-13 21:12:38,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 21:12:38,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 2359 transitions. [2022-07-13 21:12:38,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 21:12:38,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:38,357 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:12:38,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:12:38,358 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:38,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:38,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1858661205, now seen corresponding path program 1 times [2022-07-13 21:12:38,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:38,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764177757] [2022-07-13 21:12:38,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:38,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:12:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:12:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:12:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:12:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:12:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:12:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 21:12:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 21:12:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:12:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:12:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 21:12:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 21:12:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:12:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-13 21:12:38,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:38,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764177757] [2022-07-13 21:12:38,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764177757] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:12:38,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183734178] [2022-07-13 21:12:38,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:38,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:12:38,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:12:38,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:12:38,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 21:12:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:38,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 21:12:38,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:12:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-13 21:12:38,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 21:12:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-13 21:12:38,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183734178] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 21:12:38,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 21:12:38,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-07-13 21:12:38,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395577477] [2022-07-13 21:12:38,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 21:12:38,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 21:12:38,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:38,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 21:12:38,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:12:38,926 INFO L87 Difference]: Start difference. First operand 1871 states and 2359 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-13 21:12:39,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:39,667 INFO L93 Difference]: Finished difference Result 3843 states and 4812 transitions. [2022-07-13 21:12:39,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 21:12:39,667 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-07-13 21:12:39,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:39,686 INFO L225 Difference]: With dead ends: 3843 [2022-07-13 21:12:39,686 INFO L226 Difference]: Without dead ends: 2411 [2022-07-13 21:12:39,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 354 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-07-13 21:12:39,690 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 2108 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 1859 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:39,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2140 Valid, 1859 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:12:39,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2022-07-13 21:12:39,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 2261. [2022-07-13 21:12:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1832 states have (on average 1.2461790393013101) internal successors, (2283), 1854 states have internal predecessors, (2283), 215 states have call successors, (215), 168 states have call predecessors, (215), 212 states have return successors, (332), 239 states have call predecessors, (332), 212 states have call successors, (332) [2022-07-13 21:12:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 2830 transitions. [2022-07-13 21:12:39,808 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 2830 transitions. Word has length 162 [2022-07-13 21:12:39,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:39,808 INFO L495 AbstractCegarLoop]: Abstraction has 2261 states and 2830 transitions. [2022-07-13 21:12:39,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-13 21:12:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 2830 transitions. [2022-07-13 21:12:39,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 21:12:39,812 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:39,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:39,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 21:12:40,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-13 21:12:40,030 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:40,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:40,030 INFO L85 PathProgramCache]: Analyzing trace with hash 451963073, now seen corresponding path program 1 times [2022-07-13 21:12:40,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:40,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975570515] [2022-07-13 21:12:40,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:40,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:40,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:40,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 21:12:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:40,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:12:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:40,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:12:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:40,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:12:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:40,115 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 21:12:40,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:40,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975570515] [2022-07-13 21:12:40,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975570515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:40,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:40,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:12:40,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925824358] [2022-07-13 21:12:40,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:40,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:12:40,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:40,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:12:40,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:12:40,117 INFO L87 Difference]: Start difference. First operand 2261 states and 2830 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:12:41,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:41,068 INFO L93 Difference]: Finished difference Result 2705 states and 3546 transitions. [2022-07-13 21:12:41,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:12:41,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-13 21:12:41,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:41,079 INFO L225 Difference]: With dead ends: 2705 [2022-07-13 21:12:41,080 INFO L226 Difference]: Without dead ends: 2381 [2022-07-13 21:12:41,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:12:41,082 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 992 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:41,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1224 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:12:41,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2022-07-13 21:12:41,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2261. [2022-07-13 21:12:41,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1832 states have (on average 1.2456331877729259) internal successors, (2282), 1854 states have internal predecessors, (2282), 215 states have call successors, (215), 168 states have call predecessors, (215), 212 states have return successors, (332), 239 states have call predecessors, (332), 212 states have call successors, (332) [2022-07-13 21:12:41,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 2829 transitions. [2022-07-13 21:12:41,287 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 2829 transitions. Word has length 157 [2022-07-13 21:12:41,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:41,287 INFO L495 AbstractCegarLoop]: Abstraction has 2261 states and 2829 transitions. [2022-07-13 21:12:41,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:12:41,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 2829 transitions. [2022-07-13 21:12:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 21:12:41,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:41,290 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:41,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:12:41,290 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:41,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:41,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1445016385, now seen corresponding path program 1 times [2022-07-13 21:12:41,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:41,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159329202] [2022-07-13 21:12:41,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:41,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:41,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:41,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 21:12:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:41,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:12:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:41,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:12:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:41,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:12:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:41,375 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 21:12:41,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:41,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159329202] [2022-07-13 21:12:41,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159329202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:41,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:41,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:12:41,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251778304] [2022-07-13 21:12:41,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:41,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:12:41,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:41,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:12:41,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:12:41,378 INFO L87 Difference]: Start difference. First operand 2261 states and 2829 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:12:43,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:43,445 INFO L93 Difference]: Finished difference Result 3147 states and 4260 transitions. [2022-07-13 21:12:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:12:43,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-13 21:12:43,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:43,451 INFO L225 Difference]: With dead ends: 3147 [2022-07-13 21:12:43,451 INFO L226 Difference]: Without dead ends: 2831 [2022-07-13 21:12:43,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:12:43,452 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 1554 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:43,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 1878 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 21:12:43,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2022-07-13 21:12:43,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2590. [2022-07-13 21:12:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2590 states, 2135 states have (on average 1.2955503512880562) internal successors, (2766), 2158 states have internal predecessors, (2766), 234 states have call successors, (234), 174 states have call predecessors, (234), 219 states have return successors, (354), 258 states have call predecessors, (354), 231 states have call successors, (354) [2022-07-13 21:12:43,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 3354 transitions. [2022-07-13 21:12:43,571 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 3354 transitions. Word has length 157 [2022-07-13 21:12:43,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:43,572 INFO L495 AbstractCegarLoop]: Abstraction has 2590 states and 3354 transitions. [2022-07-13 21:12:43,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:12:43,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 3354 transitions. [2022-07-13 21:12:43,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 21:12:43,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:43,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:43,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 21:12:43,575 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:43,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:43,575 INFO L85 PathProgramCache]: Analyzing trace with hash -778981189, now seen corresponding path program 1 times [2022-07-13 21:12:43,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:43,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860107714] [2022-07-13 21:12:43,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:43,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:43,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:43,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 21:12:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:43,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:12:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:43,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:12:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:43,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:12:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:43,671 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 21:12:43,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:43,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860107714] [2022-07-13 21:12:43,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860107714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:43,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:43,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:12:43,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744978564] [2022-07-13 21:12:43,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:43,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:12:43,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:43,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:12:43,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:12:43,674 INFO L87 Difference]: Start difference. First operand 2590 states and 3354 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:12:46,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:46,543 INFO L93 Difference]: Finished difference Result 3940 states and 5536 transitions. [2022-07-13 21:12:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:12:46,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-13 21:12:46,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:46,553 INFO L225 Difference]: With dead ends: 3940 [2022-07-13 21:12:46,553 INFO L226 Difference]: Without dead ends: 3295 [2022-07-13 21:12:46,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:12:46,557 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 1573 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 2875 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 2984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:46,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 2912 Invalid, 2984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2875 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:12:46,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2022-07-13 21:12:46,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 2896. [2022-07-13 21:12:46,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2415 states have (on average 1.3267080745341615) internal successors, (3204), 2439 states have internal predecessors, (3204), 253 states have call successors, (253), 180 states have call predecessors, (253), 226 states have return successors, (375), 278 states have call predecessors, (375), 250 states have call successors, (375) [2022-07-13 21:12:46,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 3832 transitions. [2022-07-13 21:12:46,752 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 3832 transitions. Word has length 157 [2022-07-13 21:12:46,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:46,752 INFO L495 AbstractCegarLoop]: Abstraction has 2896 states and 3832 transitions. [2022-07-13 21:12:46,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:12:46,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 3832 transitions. [2022-07-13 21:12:46,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 21:12:46,760 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:46,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:46,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 21:12:46,761 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:46,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:46,762 INFO L85 PathProgramCache]: Analyzing trace with hash 619972413, now seen corresponding path program 1 times [2022-07-13 21:12:46,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:46,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335389352] [2022-07-13 21:12:46,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:46,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:46,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:46,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 21:12:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:46,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:12:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:46,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:12:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:46,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:12:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:46,880 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 21:12:46,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:46,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335389352] [2022-07-13 21:12:46,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335389352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:46,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:46,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:12:46,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815670044] [2022-07-13 21:12:46,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:46,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:12:46,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:46,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:12:46,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:12:46,883 INFO L87 Difference]: Start difference. First operand 2896 states and 3832 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:12:49,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:49,514 INFO L93 Difference]: Finished difference Result 5109 states and 7402 transitions. [2022-07-13 21:12:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:12:49,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-13 21:12:49,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:49,528 INFO L225 Difference]: With dead ends: 5109 [2022-07-13 21:12:49,528 INFO L226 Difference]: Without dead ends: 4158 [2022-07-13 21:12:49,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:12:49,533 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 1570 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 2877 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:49,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 2904 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2877 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 21:12:49,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2022-07-13 21:12:49,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 3509. [2022-07-13 21:12:49,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2976 states have (on average 1.3713037634408602) internal successors, (4081), 3002 states have internal predecessors, (4081), 291 states have call successors, (291), 192 states have call predecessors, (291), 240 states have return successors, (421), 318 states have call predecessors, (421), 288 states have call successors, (421) [2022-07-13 21:12:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 4793 transitions. [2022-07-13 21:12:49,824 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 4793 transitions. Word has length 157 [2022-07-13 21:12:49,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:49,824 INFO L495 AbstractCegarLoop]: Abstraction has 3509 states and 4793 transitions. [2022-07-13 21:12:49,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:12:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 4793 transitions. [2022-07-13 21:12:49,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 21:12:49,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:49,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:49,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 21:12:49,829 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:49,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:49,830 INFO L85 PathProgramCache]: Analyzing trace with hash -997468037, now seen corresponding path program 1 times [2022-07-13 21:12:49,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:49,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016243620] [2022-07-13 21:12:49,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:49,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:49,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 21:12:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:49,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:12:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:49,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:12:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:49,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:12:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:49,945 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 21:12:49,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:49,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016243620] [2022-07-13 21:12:49,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016243620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:49,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:49,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:12:49,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552995881] [2022-07-13 21:12:49,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:49,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:12:49,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:49,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:12:49,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:12:49,947 INFO L87 Difference]: Start difference. First operand 3509 states and 4793 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:12:53,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:53,072 INFO L93 Difference]: Finished difference Result 7358 states and 10971 transitions. [2022-07-13 21:12:53,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:12:53,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-13 21:12:53,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:53,084 INFO L225 Difference]: With dead ends: 7358 [2022-07-13 21:12:53,084 INFO L226 Difference]: Without dead ends: 5794 [2022-07-13 21:12:53,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:12:53,088 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 1666 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 2563 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1693 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:53,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1693 Valid, 2094 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2563 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:12:53,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5794 states. [2022-07-13 21:12:53,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5794 to 4736. [2022-07-13 21:12:53,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4736 states, 4099 states have (on average 1.4235179312027324) internal successors, (5835), 4129 states have internal predecessors, (5835), 367 states have call successors, (367), 216 states have call predecessors, (367), 268 states have return successors, (519), 398 states have call predecessors, (519), 364 states have call successors, (519) [2022-07-13 21:12:53,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4736 states to 4736 states and 6721 transitions. [2022-07-13 21:12:53,342 INFO L78 Accepts]: Start accepts. Automaton has 4736 states and 6721 transitions. Word has length 157 [2022-07-13 21:12:53,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:53,343 INFO L495 AbstractCegarLoop]: Abstraction has 4736 states and 6721 transitions. [2022-07-13 21:12:53,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:12:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 4736 states and 6721 transitions. [2022-07-13 21:12:53,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 21:12:53,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:53,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:53,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 21:12:53,348 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:53,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:53,349 INFO L85 PathProgramCache]: Analyzing trace with hash -634001539, now seen corresponding path program 1 times [2022-07-13 21:12:53,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:53,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485335792] [2022-07-13 21:12:53,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:53,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:53,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:53,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 21:12:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:53,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:12:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:53,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:12:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:53,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:12:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:53,466 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 21:12:53,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:53,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485335792] [2022-07-13 21:12:53,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485335792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:53,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:53,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:12:53,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876910426] [2022-07-13 21:12:53,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:53,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:12:53,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:53,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:12:53,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:12:53,469 INFO L87 Difference]: Start difference. First operand 4736 states and 6721 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:12:56,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:56,797 INFO L93 Difference]: Finished difference Result 11855 states and 18125 transitions. [2022-07-13 21:12:56,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:12:56,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-13 21:12:56,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:56,816 INFO L225 Difference]: With dead ends: 11855 [2022-07-13 21:12:56,817 INFO L226 Difference]: Without dead ends: 9064 [2022-07-13 21:12:56,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:12:56,823 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 1562 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 2867 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:56,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 2896 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2867 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:12:56,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9064 states. [2022-07-13 21:12:57,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9064 to 7195. [2022-07-13 21:12:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7195 states, 6350 states have (on average 1.4722834645669292) internal successors, (9349), 6388 states have internal predecessors, (9349), 519 states have call successors, (519), 264 states have call predecessors, (519), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2022-07-13 21:12:57,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 10601 transitions. [2022-07-13 21:12:57,235 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 10601 transitions. Word has length 157 [2022-07-13 21:12:57,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:57,235 INFO L495 AbstractCegarLoop]: Abstraction has 7195 states and 10601 transitions. [2022-07-13 21:12:57,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:12:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 10601 transitions. [2022-07-13 21:12:57,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 21:12:57,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:57,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:57,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 21:12:57,241 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:57,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:57,241 INFO L85 PathProgramCache]: Analyzing trace with hash -345182149, now seen corresponding path program 1 times [2022-07-13 21:12:57,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:57,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108603853] [2022-07-13 21:12:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:57,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:57,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:57,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 21:12:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:57,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:12:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:57,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:12:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:57,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:12:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:57,338 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 21:12:57,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:57,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108603853] [2022-07-13 21:12:57,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108603853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:57,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:57,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:12:57,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513678555] [2022-07-13 21:12:57,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:57,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:12:57,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:57,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:12:57,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:12:57,339 INFO L87 Difference]: Start difference. First operand 7195 states and 10601 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:12:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:59,038 INFO L93 Difference]: Finished difference Result 14402 states and 22250 transitions. [2022-07-13 21:12:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:12:59,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-13 21:12:59,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:59,058 INFO L225 Difference]: With dead ends: 14402 [2022-07-13 21:12:59,058 INFO L226 Difference]: Without dead ends: 9152 [2022-07-13 21:12:59,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:12:59,071 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 1383 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:59,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1411 Valid, 1487 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:12:59,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9152 states. [2022-07-13 21:12:59,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9152 to 7195. [2022-07-13 21:12:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7195 states, 6350 states have (on average 1.4696062992125984) internal successors, (9332), 6388 states have internal predecessors, (9332), 519 states have call successors, (519), 264 states have call predecessors, (519), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2022-07-13 21:12:59,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 10584 transitions. [2022-07-13 21:12:59,532 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 10584 transitions. Word has length 157 [2022-07-13 21:12:59,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:59,533 INFO L495 AbstractCegarLoop]: Abstraction has 7195 states and 10584 transitions. [2022-07-13 21:12:59,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:12:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 10584 transitions. [2022-07-13 21:12:59,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 21:12:59,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:59,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:59,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 21:12:59,541 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:59,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:59,541 INFO L85 PathProgramCache]: Analyzing trace with hash -890054723, now seen corresponding path program 1 times [2022-07-13 21:12:59,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:59,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648199208] [2022-07-13 21:12:59,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:59,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:59,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:59,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 21:12:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:59,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:12:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:59,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:12:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:59,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:12:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:59,655 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 21:12:59,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:59,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648199208] [2022-07-13 21:12:59,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648199208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:59,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:59,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:12:59,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130921697] [2022-07-13 21:12:59,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:59,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:12:59,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:59,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:12:59,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:12:59,657 INFO L87 Difference]: Start difference. First operand 7195 states and 10584 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:01,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:01,661 INFO L93 Difference]: Finished difference Result 14367 states and 22130 transitions. [2022-07-13 21:13:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:13:01,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-13 21:13:01,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:01,679 INFO L225 Difference]: With dead ends: 14367 [2022-07-13 21:13:01,680 INFO L226 Difference]: Without dead ends: 9117 [2022-07-13 21:13:01,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:13:01,690 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 1185 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:01,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 1710 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:13:01,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9117 states. [2022-07-13 21:13:02,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9117 to 7195. [2022-07-13 21:13:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7195 states, 6350 states have (on average 1.4669291338582677) internal successors, (9315), 6388 states have internal predecessors, (9315), 519 states have call successors, (519), 264 states have call predecessors, (519), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2022-07-13 21:13:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 10567 transitions. [2022-07-13 21:13:02,205 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 10567 transitions. Word has length 157 [2022-07-13 21:13:02,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:02,205 INFO L495 AbstractCegarLoop]: Abstraction has 7195 states and 10567 transitions. [2022-07-13 21:13:02,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:02,206 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 10567 transitions. [2022-07-13 21:13:02,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 21:13:02,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:02,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:02,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 21:13:02,210 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:02,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:02,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1838106689, now seen corresponding path program 1 times [2022-07-13 21:13:02,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:02,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528546480] [2022-07-13 21:13:02,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:02,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:02,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:02,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 21:13:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:02,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:13:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:02,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:13:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:02,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:13:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:02,332 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 21:13:02,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:02,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528546480] [2022-07-13 21:13:02,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528546480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:02,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:02,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:02,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617183921] [2022-07-13 21:13:02,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:02,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:02,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:02,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:02,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:02,334 INFO L87 Difference]: Start difference. First operand 7195 states and 10567 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:05,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:05,381 INFO L93 Difference]: Finished difference Result 20795 states and 32221 transitions. [2022-07-13 21:13:05,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:13:05,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-13 21:13:05,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:05,421 INFO L225 Difference]: With dead ends: 20795 [2022-07-13 21:13:05,422 INFO L226 Difference]: Without dead ends: 15545 [2022-07-13 21:13:05,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:13:05,462 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 1545 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 2807 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:05,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1572 Valid, 2874 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2807 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 21:13:05,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15545 states. [2022-07-13 21:13:06,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15545 to 12176. [2022-07-13 21:13:06,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12176 states, 10915 states have (on average 1.5023362345396243) internal successors, (16398), 10969 states have internal predecessors, (16398), 823 states have call successors, (823), 360 states have call predecessors, (823), 436 states have return successors, (1215), 878 states have call predecessors, (1215), 820 states have call successors, (1215) [2022-07-13 21:13:06,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12176 states to 12176 states and 18436 transitions. [2022-07-13 21:13:06,268 INFO L78 Accepts]: Start accepts. Automaton has 12176 states and 18436 transitions. Word has length 157 [2022-07-13 21:13:06,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:06,269 INFO L495 AbstractCegarLoop]: Abstraction has 12176 states and 18436 transitions. [2022-07-13 21:13:06,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:06,269 INFO L276 IsEmpty]: Start isEmpty. Operand 12176 states and 18436 transitions. [2022-07-13 21:13:06,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 21:13:06,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:06,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:06,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 21:13:06,278 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:06,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:06,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1872088957, now seen corresponding path program 1 times [2022-07-13 21:13:06,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:06,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366162750] [2022-07-13 21:13:06,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:06,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:06,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:06,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 21:13:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:06,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:13:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:06,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:13:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:06,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:13:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:06,449 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 21:13:06,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:06,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366162750] [2022-07-13 21:13:06,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366162750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:06,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:06,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:06,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925566267] [2022-07-13 21:13:06,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:06,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:06,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:06,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:06,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:06,451 INFO L87 Difference]: Start difference. First operand 12176 states and 18436 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:08,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:08,706 INFO L93 Difference]: Finished difference Result 25941 states and 40627 transitions. [2022-07-13 21:13:08,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:13:08,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-13 21:13:08,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:08,749 INFO L225 Difference]: With dead ends: 25941 [2022-07-13 21:13:08,749 INFO L226 Difference]: Without dead ends: 15710 [2022-07-13 21:13:08,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:13:08,771 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 1184 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:08,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 1703 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:13:08,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15710 states. [2022-07-13 21:13:09,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15710 to 12176. [2022-07-13 21:13:09,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12176 states, 10915 states have (on average 1.4993128721942282) internal successors, (16365), 10969 states have internal predecessors, (16365), 823 states have call successors, (823), 360 states have call predecessors, (823), 436 states have return successors, (1215), 878 states have call predecessors, (1215), 820 states have call successors, (1215) [2022-07-13 21:13:10,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12176 states to 12176 states and 18403 transitions. [2022-07-13 21:13:10,002 INFO L78 Accepts]: Start accepts. Automaton has 12176 states and 18403 transitions. Word has length 157 [2022-07-13 21:13:10,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:10,002 INFO L495 AbstractCegarLoop]: Abstraction has 12176 states and 18403 transitions. [2022-07-13 21:13:10,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:10,003 INFO L276 IsEmpty]: Start isEmpty. Operand 12176 states and 18403 transitions. [2022-07-13 21:13:10,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 21:13:10,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:10,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:10,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 21:13:10,010 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:10,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:10,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1437583359, now seen corresponding path program 1 times [2022-07-13 21:13:10,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:10,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324000085] [2022-07-13 21:13:10,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:10,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:10,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:10,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 21:13:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:10,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:13:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:10,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:13:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:10,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:13:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:10,104 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 21:13:10,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:10,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324000085] [2022-07-13 21:13:10,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324000085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:10,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:10,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:10,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967164597] [2022-07-13 21:13:10,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:10,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:10,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:10,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:10,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:10,107 INFO L87 Difference]: Start difference. First operand 12176 states and 18403 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:14,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:14,783 INFO L93 Difference]: Finished difference Result 38750 states and 60730 transitions. [2022-07-13 21:13:14,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:13:14,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-13 21:13:14,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:14,859 INFO L225 Difference]: With dead ends: 38750 [2022-07-13 21:13:14,860 INFO L226 Difference]: Without dead ends: 28519 [2022-07-13 21:13:14,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:13:14,905 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 1537 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 2780 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:14,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 2863 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2780 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 21:13:14,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28519 states. [2022-07-13 21:13:16,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28519 to 22196. [2022-07-13 21:13:16,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22196 states, 20103 states have (on average 1.5205193254738099) internal successors, (30567), 20189 states have internal predecessors, (30567), 1431 states have call successors, (1431), 552 states have call predecessors, (1431), 660 states have return successors, (2341), 1518 states have call predecessors, (2341), 1428 states have call successors, (2341) [2022-07-13 21:13:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22196 states to 22196 states and 34339 transitions. [2022-07-13 21:13:16,792 INFO L78 Accepts]: Start accepts. Automaton has 22196 states and 34339 transitions. Word has length 157 [2022-07-13 21:13:16,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:16,792 INFO L495 AbstractCegarLoop]: Abstraction has 22196 states and 34339 transitions. [2022-07-13 21:13:16,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:16,793 INFO L276 IsEmpty]: Start isEmpty. Operand 22196 states and 34339 transitions. [2022-07-13 21:13:16,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 21:13:16,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:16,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:16,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 21:13:16,802 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:16,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:16,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1007925053, now seen corresponding path program 1 times [2022-07-13 21:13:16,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:16,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623101649] [2022-07-13 21:13:16,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:16,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:16,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:16,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 21:13:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:16,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:13:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:16,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:13:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:16,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:13:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:16,899 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 21:13:16,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:16,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623101649] [2022-07-13 21:13:16,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623101649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:16,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:16,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:16,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38145256] [2022-07-13 21:13:16,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:16,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:16,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:16,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:16,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:16,901 INFO L87 Difference]: Start difference. First operand 22196 states and 34339 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:26,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:26,264 INFO L93 Difference]: Finished difference Result 84260 states and 133206 transitions. [2022-07-13 21:13:26,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:13:26,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-13 21:13:26,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:26,440 INFO L225 Difference]: With dead ends: 84260 [2022-07-13 21:13:26,441 INFO L226 Difference]: Without dead ends: 64009 [2022-07-13 21:13:26,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:13:26,493 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 1727 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 2977 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 3129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 2977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:26,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1753 Valid, 2230 Invalid, 3129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 2977 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:13:26,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64009 states. [2022-07-13 21:13:29,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64009 to 42105. [2022-07-13 21:13:29,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42105 states, 38412 states have (on average 1.534234093512444) internal successors, (58933), 38562 states have internal predecessors, (58933), 2583 states have call successors, (2583), 936 states have call predecessors, (2583), 1108 states have return successors, (5015), 2734 states have call predecessors, (5015), 2580 states have call successors, (5015) [2022-07-13 21:13:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42105 states to 42105 states and 66531 transitions. [2022-07-13 21:13:30,047 INFO L78 Accepts]: Start accepts. Automaton has 42105 states and 66531 transitions. Word has length 157 [2022-07-13 21:13:30,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:30,048 INFO L495 AbstractCegarLoop]: Abstraction has 42105 states and 66531 transitions. [2022-07-13 21:13:30,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:30,048 INFO L276 IsEmpty]: Start isEmpty. Operand 42105 states and 66531 transitions. [2022-07-13 21:13:30,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 21:13:30,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:30,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:30,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 21:13:30,064 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:30,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:30,065 INFO L85 PathProgramCache]: Analyzing trace with hash 301328447, now seen corresponding path program 1 times [2022-07-13 21:13:30,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:30,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464597792] [2022-07-13 21:13:30,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:30,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 21:13:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:13:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:13:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:13:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,175 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 21:13:30,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:30,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464597792] [2022-07-13 21:13:30,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464597792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:30,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:30,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:30,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370574522] [2022-07-13 21:13:30,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:30,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:30,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:30,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:30,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:30,177 INFO L87 Difference]: Start difference. First operand 42105 states and 66531 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:47,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:47,010 INFO L93 Difference]: Finished difference Result 163631 states and 262208 transitions. [2022-07-13 21:13:47,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:13:47,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-13 21:13:47,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:47,476 INFO L225 Difference]: With dead ends: 163631 [2022-07-13 21:13:47,478 INFO L226 Difference]: Without dead ends: 123471 [2022-07-13 21:13:47,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:13:47,764 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 1903 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 2756 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:47,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1941 Valid, 2839 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2756 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 21:13:47,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123471 states. [2022-07-13 21:13:55,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123471 to 80578. [2022-07-13 21:13:55,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80578 states, 73749 states have (on average 1.537959836743549) internal successors, (113423), 74027 states have internal predecessors, (113423), 4823 states have call successors, (4823), 1704 states have call predecessors, (4823), 2004 states have return successors, (11757), 5102 states have call predecessors, (11757), 4820 states have call successors, (11757) [2022-07-13 21:13:55,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80578 states to 80578 states and 130003 transitions. [2022-07-13 21:13:55,651 INFO L78 Accepts]: Start accepts. Automaton has 80578 states and 130003 transitions. Word has length 157 [2022-07-13 21:13:55,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:55,652 INFO L495 AbstractCegarLoop]: Abstraction has 80578 states and 130003 transitions. [2022-07-13 21:13:55,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:55,653 INFO L276 IsEmpty]: Start isEmpty. Operand 80578 states and 130003 transitions. [2022-07-13 21:13:55,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 21:13:55,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:55,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:55,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 21:13:55,685 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:55,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:55,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1248366333, now seen corresponding path program 1 times [2022-07-13 21:13:55,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:55,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702019163] [2022-07-13 21:13:55,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:55,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:55,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:55,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 21:13:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:55,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:13:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:55,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:13:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:55,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:13:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:55,819 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 21:13:55,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:55,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702019163] [2022-07-13 21:13:55,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702019163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:55,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:55,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:55,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788631365] [2022-07-13 21:13:55,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:55,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:55,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:55,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:55,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:55,821 INFO L87 Difference]: Start difference. First operand 80578 states and 130003 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:29,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:29,368 INFO L93 Difference]: Finished difference Result 316166 states and 515230 transitions. [2022-07-13 21:14:29,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:14:29,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-13 21:14:29,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:30,324 INFO L225 Difference]: With dead ends: 316166 [2022-07-13 21:14:30,324 INFO L226 Difference]: Without dead ends: 237533 [2022-07-13 21:14:30,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:14:30,526 INFO L413 NwaCegarLoop]: 1077 mSDtfsCounter, 1620 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 3170 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 2976 SdHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 3170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:30,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1646 Valid, 2976 Invalid, 3291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 3170 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:14:30,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237533 states.