./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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.05.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52de5146a3a24866d31d2076a85235f80d04004402c35cfcf3c3304704a7fec0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:31:37,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:31:37,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:31:38,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:31:38,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:31:38,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:31:38,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:31:38,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:31:38,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:31:38,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:31:38,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:31:38,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:31:38,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:31:38,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:31:38,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:31:38,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:31:38,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:31:38,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:31:38,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:31:38,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:31:38,053 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:31:38,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:31:38,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:31:38,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:31:38,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:31:38,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:31:38,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:31:38,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:31:38,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:31:38,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:31:38,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:31:38,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:31:38,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:31:38,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:31:38,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:31:38,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:31:38,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:31:38,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:31:38,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:31:38,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:31:38,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:31:38,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:31:38,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:31:38,091 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:31:38,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:31:38,092 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:31:38,092 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:31:38,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:31:38,093 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:31:38,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:31:38,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:31:38,095 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:31:38,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:31:38,096 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:31:38,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:31:38,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:31:38,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:31:38,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:31:38,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:31:38,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:31:38,097 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:31:38,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:31:38,099 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:31:38,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:31:38,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:31:38,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:31:38,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:31:38,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:31:38,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:31:38,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:31:38,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:31:38,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:31:38,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:31:38,105 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:31:38,105 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:31:38,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:31:38,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52de5146a3a24866d31d2076a85235f80d04004402c35cfcf3c3304704a7fec0 [2022-07-12 09:31:38,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:31:38,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:31:38,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:31:38,318 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:31:38,319 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:31:38,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-1.c [2022-07-12 09:31:38,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d80a342/ccf03d954cec4a6fbca4fa31d2cbaaaa/FLAG51243ba00 [2022-07-12 09:31:38,719 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:31:38,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-1.c [2022-07-12 09:31:38,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d80a342/ccf03d954cec4a6fbca4fa31d2cbaaaa/FLAG51243ba00 [2022-07-12 09:31:39,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60d80a342/ccf03d954cec4a6fbca4fa31d2cbaaaa [2022-07-12 09:31:39,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:31:39,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:31:39,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:31:39,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:31:39,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:31:39,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:31:39" (1/1) ... [2022-07-12 09:31:39,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc4ec06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:39, skipping insertion in model container [2022-07-12 09:31:39,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:31:39" (1/1) ... [2022-07-12 09:31:39,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:31:39,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:31:39,326 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.05.cil-1.c[914,927] [2022-07-12 09:31:39,382 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.05.cil-1.c[7115,7128] [2022-07-12 09:31:39,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:31:39,453 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:31:39,464 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.05.cil-1.c[914,927] [2022-07-12 09:31:39,490 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.05.cil-1.c[7115,7128] [2022-07-12 09:31:39,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:31:39,529 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:31:39,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:39 WrapperNode [2022-07-12 09:31:39,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:31:39,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:31:39,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:31:39,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:31:39,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:39" (1/1) ... [2022-07-12 09:31:39,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:39" (1/1) ... [2022-07-12 09:31:39,591 INFO L137 Inliner]: procedures = 63, calls = 72, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 634 [2022-07-12 09:31:39,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:31:39,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:31:39,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:31:39,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:31:39,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:39" (1/1) ... [2022-07-12 09:31:39,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:39" (1/1) ... [2022-07-12 09:31:39,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:39" (1/1) ... [2022-07-12 09:31:39,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:39" (1/1) ... [2022-07-12 09:31:39,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:39" (1/1) ... [2022-07-12 09:31:39,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:39" (1/1) ... [2022-07-12 09:31:39,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:39" (1/1) ... [2022-07-12 09:31:39,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:31:39,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:31:39,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:31:39,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:31:39,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:39" (1/1) ... [2022-07-12 09:31:39,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:31:39,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:39,673 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) [2022-07-12 09:31:39,684 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 [2022-07-12 09:31:39,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:31:39,696 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:31:39,696 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:31:39,697 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-12 09:31:39,697 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-12 09:31:39,697 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:31:39,697 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:31:39,697 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:31:39,697 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:31:39,697 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-12 09:31:39,698 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-12 09:31:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:31:39,698 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:31:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:31:39,698 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:31:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-12 09:31:39,698 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-12 09:31:39,699 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-12 09:31:39,699 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-12 09:31:39,699 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-12 09:31:39,699 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-12 09:31:39,699 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:31:39,699 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:31:39,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:31:39,699 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:31:39,700 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:31:39,700 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-12 09:31:39,700 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-12 09:31:39,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:31:39,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:31:39,700 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:31:39,700 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:31:39,764 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:31:39,765 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:31:40,202 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:31:40,211 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:31:40,211 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-07-12 09:31:40,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:31:40 BoogieIcfgContainer [2022-07-12 09:31:40,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:31:40,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:31:40,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:31:40,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:31:40,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:31:39" (1/3) ... [2022-07-12 09:31:40,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c9a330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:31:40, skipping insertion in model container [2022-07-12 09:31:40,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:39" (2/3) ... [2022-07-12 09:31:40,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c9a330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:31:40, skipping insertion in model container [2022-07-12 09:31:40,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:31:40" (3/3) ... [2022-07-12 09:31:40,219 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.05.cil-1.c [2022-07-12 09:31:40,227 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:31:40,228 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:31:40,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:31:40,268 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@74a778a7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2aeed4da [2022-07-12 09:31:40,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:31:40,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 258 states have (on average 1.5968992248062015) internal successors, (412), 264 states have internal predecessors, (412), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-12 09:31:40,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:40,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:40,280 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] [2022-07-12 09:31:40,281 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:40,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:40,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2128266520, now seen corresponding path program 1 times [2022-07-12 09:31:40,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:40,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841795639] [2022-07-12 09:31:40,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:40,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:40,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:40,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841795639] [2022-07-12 09:31:40,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841795639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:40,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:40,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:31:40,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623427511] [2022-07-12 09:31:40,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:40,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:31:40,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:40,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:31:40,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:31:40,489 INFO L87 Difference]: Start difference. First operand has 308 states, 258 states have (on average 1.5968992248062015) internal successors, (412), 264 states have internal predecessors, (412), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:40,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:40,927 INFO L93 Difference]: Finished difference Result 613 states and 949 transitions. [2022-07-12 09:31:40,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 09:31:40,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:31:40,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:40,937 INFO L225 Difference]: With dead ends: 613 [2022-07-12 09:31:40,937 INFO L226 Difference]: Without dead ends: 316 [2022-07-12 09:31:40,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:31:40,943 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 472 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:40,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 1200 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:31:40,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-07-12 09:31:40,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 298. [2022-07-12 09:31:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 250 states have (on average 1.5) internal successors, (375), 254 states have internal predecessors, (375), 33 states have call successors, (33), 14 states have call predecessors, (33), 13 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-12 09:31:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 439 transitions. [2022-07-12 09:31:40,981 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 439 transitions. Word has length 65 [2022-07-12 09:31:40,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:40,981 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 439 transitions. [2022-07-12 09:31:40,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:40,982 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 439 transitions. [2022-07-12 09:31:40,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:40,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:40,984 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] [2022-07-12 09:31:40,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:31:40,984 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:40,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:40,985 INFO L85 PathProgramCache]: Analyzing trace with hash 779915366, now seen corresponding path program 1 times [2022-07-12 09:31:40,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:40,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642075465] [2022-07-12 09:31:40,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:40,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:41,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:41,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642075465] [2022-07-12 09:31:41,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642075465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:41,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:41,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:31:41,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082723897] [2022-07-12 09:31:41,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:41,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:31:41,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:41,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:31:41,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:41,089 INFO L87 Difference]: Start difference. First operand 298 states and 439 transitions. 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) [2022-07-12 09:31:41,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:41,722 INFO L93 Difference]: Finished difference Result 521 states and 753 transitions. [2022-07-12 09:31:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:31:41,723 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 [2022-07-12 09:31:41,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:41,725 INFO L225 Difference]: With dead ends: 521 [2022-07-12 09:31:41,726 INFO L226 Difference]: Without dead ends: 433 [2022-07-12 09:31:41,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:31:41,727 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 561 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:41,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 1634 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:31:41,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-07-12 09:31:41,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 394. [2022-07-12 09:31:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 326 states have (on average 1.469325153374233) internal successors, (479), 332 states have internal predecessors, (479), 44 states have call successors, (44), 21 states have call predecessors, (44), 22 states have return successors, (47), 43 states have call predecessors, (47), 42 states have call successors, (47) [2022-07-12 09:31:41,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 570 transitions. [2022-07-12 09:31:41,751 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 570 transitions. Word has length 65 [2022-07-12 09:31:41,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:41,751 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 570 transitions. [2022-07-12 09:31:41,751 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) [2022-07-12 09:31:41,751 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 570 transitions. [2022-07-12 09:31:41,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:41,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:41,754 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] [2022-07-12 09:31:41,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:31:41,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:41,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:41,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1836163290, now seen corresponding path program 1 times [2022-07-12 09:31:41,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:41,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312380803] [2022-07-12 09:31:41,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:41,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:41,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:41,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312380803] [2022-07-12 09:31:41,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312380803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:41,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:41,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:31:41,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720688118] [2022-07-12 09:31:41,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:41,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:31:41,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:41,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:31:41,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:41,853 INFO L87 Difference]: Start difference. First operand 394 states and 570 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) [2022-07-12 09:31:42,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:42,656 INFO L93 Difference]: Finished difference Result 741 states and 1046 transitions. [2022-07-12 09:31:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:31:42,657 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 [2022-07-12 09:31:42,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:42,660 INFO L225 Difference]: With dead ends: 741 [2022-07-12 09:31:42,660 INFO L226 Difference]: Without dead ends: 564 [2022-07-12 09:31:42,660 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 [2022-07-12 09:31:42,661 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 839 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:42,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1748 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:31:42,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-07-12 09:31:42,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 490. [2022-07-12 09:31:42,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 402 states have (on average 1.4477611940298507) internal successors, (582), 410 states have internal predecessors, (582), 55 states have call successors, (55), 28 states have call predecessors, (55), 31 states have return successors, (66), 55 states have call predecessors, (66), 53 states have call successors, (66) [2022-07-12 09:31:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 703 transitions. [2022-07-12 09:31:42,687 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 703 transitions. Word has length 65 [2022-07-12 09:31:42,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:42,687 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 703 transitions. [2022-07-12 09:31:42,687 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) [2022-07-12 09:31:42,687 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 703 transitions. [2022-07-12 09:31:42,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:42,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:42,690 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] [2022-07-12 09:31:42,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:31:42,690 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:42,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:42,691 INFO L85 PathProgramCache]: Analyzing trace with hash 430217896, now seen corresponding path program 1 times [2022-07-12 09:31:42,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:42,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414021136] [2022-07-12 09:31:42,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:42,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:42,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:42,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:42,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:42,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:42,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:42,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:42,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:42,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:42,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414021136] [2022-07-12 09:31:42,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414021136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:42,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:42,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:31:42,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980586896] [2022-07-12 09:31:42,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:42,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:31:42,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:42,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:31:42,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:31:42,781 INFO L87 Difference]: Start difference. First operand 490 states and 703 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) [2022-07-12 09:31:43,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:43,381 INFO L93 Difference]: Finished difference Result 791 states and 1117 transitions. [2022-07-12 09:31:43,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:31:43,382 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 [2022-07-12 09:31:43,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:43,384 INFO L225 Difference]: With dead ends: 791 [2022-07-12 09:31:43,384 INFO L226 Difference]: Without dead ends: 524 [2022-07-12 09:31:43,385 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 [2022-07-12 09:31:43,386 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 548 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:43,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 1709 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:31:43,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-07-12 09:31:43,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 495. [2022-07-12 09:31:43,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 406 states have (on average 1.438423645320197) internal successors, (584), 414 states have internal predecessors, (584), 55 states have call successors, (55), 28 states have call predecessors, (55), 32 states have return successors, (67), 56 states have call predecessors, (67), 53 states have call successors, (67) [2022-07-12 09:31:43,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 706 transitions. [2022-07-12 09:31:43,404 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 706 transitions. Word has length 65 [2022-07-12 09:31:43,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:43,404 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 706 transitions. [2022-07-12 09:31:43,404 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) [2022-07-12 09:31:43,405 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 706 transitions. [2022-07-12 09:31:43,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:43,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:43,406 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] [2022-07-12 09:31:43,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:31:43,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:43,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:43,407 INFO L85 PathProgramCache]: Analyzing trace with hash -599141402, now seen corresponding path program 1 times [2022-07-12 09:31:43,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:43,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414889869] [2022-07-12 09:31:43,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:43,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:43,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:43,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414889869] [2022-07-12 09:31:43,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414889869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:43,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:43,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:31:43,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860145852] [2022-07-12 09:31:43,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:43,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:31:43,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:43,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:31:43,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:31:43,476 INFO L87 Difference]: Start difference. First operand 495 states and 706 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) [2022-07-12 09:31:44,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:44,090 INFO L93 Difference]: Finished difference Result 813 states and 1139 transitions. [2022-07-12 09:31:44,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:31:44,091 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 [2022-07-12 09:31:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:44,093 INFO L225 Difference]: With dead ends: 813 [2022-07-12 09:31:44,093 INFO L226 Difference]: Without dead ends: 541 [2022-07-12 09:31:44,094 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 [2022-07-12 09:31:44,094 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 370 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:44,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1899 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:31:44,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-12 09:31:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 510. [2022-07-12 09:31:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 418 states have (on average 1.4258373205741626) internal successors, (596), 426 states have internal predecessors, (596), 55 states have call successors, (55), 28 states have call predecessors, (55), 35 states have return successors, (70), 59 states have call predecessors, (70), 53 states have call successors, (70) [2022-07-12 09:31:44,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 721 transitions. [2022-07-12 09:31:44,109 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 721 transitions. Word has length 65 [2022-07-12 09:31:44,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:44,110 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 721 transitions. [2022-07-12 09:31:44,110 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) [2022-07-12 09:31:44,110 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 721 transitions. [2022-07-12 09:31:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:44,111 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:44,112 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] [2022-07-12 09:31:44,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:31:44,112 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:44,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:44,112 INFO L85 PathProgramCache]: Analyzing trace with hash 787061992, now seen corresponding path program 1 times [2022-07-12 09:31:44,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:44,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783758638] [2022-07-12 09:31:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:44,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:44,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:44,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:44,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:44,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:44,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:44,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:44,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:44,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:44,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:44,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783758638] [2022-07-12 09:31:44,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783758638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:44,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:44,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:31:44,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440296681] [2022-07-12 09:31:44,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:44,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:31:44,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:44,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:31:44,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:44,172 INFO L87 Difference]: Start difference. First operand 510 states and 721 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) [2022-07-12 09:31:44,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:44,841 INFO L93 Difference]: Finished difference Result 902 states and 1232 transitions. [2022-07-12 09:31:44,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:31:44,841 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 [2022-07-12 09:31:44,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:44,844 INFO L225 Difference]: With dead ends: 902 [2022-07-12 09:31:44,844 INFO L226 Difference]: Without dead ends: 617 [2022-07-12 09:31:44,844 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 [2022-07-12 09:31:44,845 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1071 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:44,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1317 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:31:44,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-07-12 09:31:44,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 522. [2022-07-12 09:31:44,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 428 states have (on average 1.4158878504672898) internal successors, (606), 436 states have internal predecessors, (606), 56 states have call successors, (56), 29 states have call predecessors, (56), 36 states have return successors, (69), 60 states have call predecessors, (69), 54 states have call successors, (69) [2022-07-12 09:31:44,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 731 transitions. [2022-07-12 09:31:44,861 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 731 transitions. Word has length 65 [2022-07-12 09:31:44,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:44,861 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 731 transitions. [2022-07-12 09:31:44,861 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) [2022-07-12 09:31:44,861 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 731 transitions. [2022-07-12 09:31:44,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:44,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:44,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:44,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:31:44,863 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:44,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:44,863 INFO L85 PathProgramCache]: Analyzing trace with hash 653048486, now seen corresponding path program 1 times [2022-07-12 09:31:44,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:44,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44936476] [2022-07-12 09:31:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:44,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:44,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:44,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:44,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:44,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:44,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:44,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:44,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:44,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:44,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:44,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44936476] [2022-07-12 09:31:44,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44936476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:44,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:44,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:44,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517711379] [2022-07-12 09:31:44,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:44,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:44,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:44,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:44,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:44,911 INFO L87 Difference]: Start difference. First operand 522 states and 731 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) [2022-07-12 09:31:45,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:45,281 INFO L93 Difference]: Finished difference Result 1164 states and 1575 transitions. [2022-07-12 09:31:45,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:31:45,282 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 [2022-07-12 09:31:45,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:45,285 INFO L225 Difference]: With dead ends: 1164 [2022-07-12 09:31:45,285 INFO L226 Difference]: Without dead ends: 868 [2022-07-12 09:31:45,286 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 [2022-07-12 09:31:45,286 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 839 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:45,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1232 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:31:45,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2022-07-12 09:31:45,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 812. [2022-07-12 09:31:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 652 states have (on average 1.3650306748466257) internal successors, (890), 667 states have internal predecessors, (890), 91 states have call successors, (91), 51 states have call predecessors, (91), 67 states have return successors, (126), 100 states have call predecessors, (126), 89 states have call successors, (126) [2022-07-12 09:31:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1107 transitions. [2022-07-12 09:31:45,333 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1107 transitions. Word has length 65 [2022-07-12 09:31:45,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:45,333 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1107 transitions. [2022-07-12 09:31:45,334 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) [2022-07-12 09:31:45,334 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1107 transitions. [2022-07-12 09:31:45,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:31:45,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:45,338 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] [2022-07-12 09:31:45,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:31:45,338 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:45,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:45,339 INFO L85 PathProgramCache]: Analyzing trace with hash -547287697, now seen corresponding path program 1 times [2022-07-12 09:31:45,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:45,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319503049] [2022-07-12 09:31:45,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:45,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:45,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:45,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319503049] [2022-07-12 09:31:45,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319503049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:45,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:45,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:31:45,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589870921] [2022-07-12 09:31:45,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:45,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:31:45,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:45,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:31:45,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:31:45,395 INFO L87 Difference]: Start difference. First operand 812 states and 1107 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) [2022-07-12 09:31:45,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:45,753 INFO L93 Difference]: Finished difference Result 2015 states and 2674 transitions. [2022-07-12 09:31:45,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:31:45,753 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 [2022-07-12 09:31:45,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:45,760 INFO L225 Difference]: With dead ends: 2015 [2022-07-12 09:31:45,760 INFO L226 Difference]: Without dead ends: 1408 [2022-07-12 09:31:45,761 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 [2022-07-12 09:31:45,762 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 769 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:45,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 1004 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:31:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2022-07-12 09:31:45,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1293. [2022-07-12 09:31:45,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1031 states have (on average 1.3317167798254121) internal successors, (1373), 1049 states have internal predecessors, (1373), 136 states have call successors, (136), 95 states have call predecessors, (136), 124 states have return successors, (198), 155 states have call predecessors, (198), 134 states have call successors, (198) [2022-07-12 09:31:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1707 transitions. [2022-07-12 09:31:45,803 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1707 transitions. Word has length 66 [2022-07-12 09:31:45,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:45,804 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 1707 transitions. [2022-07-12 09:31:45,804 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) [2022-07-12 09:31:45,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1707 transitions. [2022-07-12 09:31:45,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:31:45,806 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:45,807 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] [2022-07-12 09:31:45,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:31:45,807 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:45,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:45,808 INFO L85 PathProgramCache]: Analyzing trace with hash 910951962, now seen corresponding path program 1 times [2022-07-12 09:31:45,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:45,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839887672] [2022-07-12 09:31:45,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:45,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:45,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:45,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839887672] [2022-07-12 09:31:45,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839887672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:45,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:45,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:31:45,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122051054] [2022-07-12 09:31:45,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:45,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:31:45,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:45,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:31:45,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:31:45,867 INFO L87 Difference]: Start difference. First operand 1293 states and 1707 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) [2022-07-12 09:31:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:46,161 INFO L93 Difference]: Finished difference Result 3481 states and 4513 transitions. [2022-07-12 09:31:46,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:31:46,161 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 [2022-07-12 09:31:46,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:46,169 INFO L225 Difference]: With dead ends: 3481 [2022-07-12 09:31:46,170 INFO L226 Difference]: Without dead ends: 2413 [2022-07-12 09:31:46,172 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 [2022-07-12 09:31:46,172 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 1057 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:46,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 854 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:31:46,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2022-07-12 09:31:46,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2155. [2022-07-12 09:31:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 1697 states have (on average 1.296405421331762) internal successors, (2200), 1725 states have internal predecessors, (2200), 234 states have call successors, (234), 179 states have call predecessors, (234), 222 states have return successors, (334), 257 states have call predecessors, (334), 232 states have call successors, (334) [2022-07-12 09:31:46,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2768 transitions. [2022-07-12 09:31:46,233 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2768 transitions. Word has length 66 [2022-07-12 09:31:46,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:46,234 INFO L495 AbstractCegarLoop]: Abstraction has 2155 states and 2768 transitions. [2022-07-12 09:31:46,234 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) [2022-07-12 09:31:46,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2768 transitions. [2022-07-12 09:31:46,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 09:31:46,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:46,235 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] [2022-07-12 09:31:46,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:31:46,236 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:46,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:46,236 INFO L85 PathProgramCache]: Analyzing trace with hash 680194510, now seen corresponding path program 1 times [2022-07-12 09:31:46,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:46,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842895340] [2022-07-12 09:31:46,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:46,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:46,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:46,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842895340] [2022-07-12 09:31:46,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842895340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:46,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:46,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:31:46,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507085344] [2022-07-12 09:31:46,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:46,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:31:46,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:46,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:31:46,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:31:46,275 INFO L87 Difference]: Start difference. First operand 2155 states and 2768 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) [2022-07-12 09:31:46,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:46,585 INFO L93 Difference]: Finished difference Result 5065 states and 6418 transitions. [2022-07-12 09:31:46,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:31:46,586 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 [2022-07-12 09:31:46,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:46,596 INFO L225 Difference]: With dead ends: 5065 [2022-07-12 09:31:46,596 INFO L226 Difference]: Without dead ends: 3135 [2022-07-12 09:31:46,600 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 [2022-07-12 09:31:46,601 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 825 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:46,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1091 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:31:46,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2022-07-12 09:31:46,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 2887. [2022-07-12 09:31:46,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2265 states have (on average 1.2821192052980133) internal successors, (2904), 2301 states have internal predecessors, (2904), 314 states have call successors, (314), 249 states have call predecessors, (314), 306 states have return successors, (443), 343 states have call predecessors, (443), 312 states have call successors, (443) [2022-07-12 09:31:46,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3661 transitions. [2022-07-12 09:31:46,682 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3661 transitions. Word has length 72 [2022-07-12 09:31:46,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:46,683 INFO L495 AbstractCegarLoop]: Abstraction has 2887 states and 3661 transitions. [2022-07-12 09:31:46,683 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) [2022-07-12 09:31:46,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3661 transitions. [2022-07-12 09:31:46,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 09:31:46,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:46,685 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] [2022-07-12 09:31:46,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:31:46,685 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:46,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:46,685 INFO L85 PathProgramCache]: Analyzing trace with hash -905222844, now seen corresponding path program 1 times [2022-07-12 09:31:46,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:46,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715301936] [2022-07-12 09:31:46,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:46,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:46,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:46,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715301936] [2022-07-12 09:31:46,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715301936] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:46,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:46,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:46,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525032493] [2022-07-12 09:31:46,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:46,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:46,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:46,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:46,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:46,749 INFO L87 Difference]: Start difference. First operand 2887 states and 3661 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) [2022-07-12 09:31:47,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:47,136 INFO L93 Difference]: Finished difference Result 3661 states and 4592 transitions. [2022-07-12 09:31:47,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:31:47,137 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 [2022-07-12 09:31:47,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:47,148 INFO L225 Difference]: With dead ends: 3661 [2022-07-12 09:31:47,149 INFO L226 Difference]: Without dead ends: 3658 [2022-07-12 09:31:47,150 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 [2022-07-12 09:31:47,150 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1263 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:47,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 1067 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:31:47,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3658 states. [2022-07-12 09:31:47,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3658 to 3381. [2022-07-12 09:31:47,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3381 states, 2650 states have (on average 1.2739622641509434) internal successors, (3376), 2691 states have internal predecessors, (3376), 364 states have call successors, (364), 293 states have call predecessors, (364), 365 states have return successors, (522), 403 states have call predecessors, (522), 363 states have call successors, (522) [2022-07-12 09:31:47,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3381 states to 3381 states and 4262 transitions. [2022-07-12 09:31:47,265 INFO L78 Accepts]: Start accepts. Automaton has 3381 states and 4262 transitions. Word has length 73 [2022-07-12 09:31:47,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:47,265 INFO L495 AbstractCegarLoop]: Abstraction has 3381 states and 4262 transitions. [2022-07-12 09:31:47,266 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) [2022-07-12 09:31:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states and 4262 transitions. [2022-07-12 09:31:47,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 09:31:47,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:47,267 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] [2022-07-12 09:31:47,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:31:47,268 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:47,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:47,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2001942744, now seen corresponding path program 1 times [2022-07-12 09:31:47,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:47,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988076363] [2022-07-12 09:31:47,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:47,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:47,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:47,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988076363] [2022-07-12 09:31:47,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988076363] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:47,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674692380] [2022-07-12 09:31:47,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:47,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:47,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:47,388 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) [2022-07-12 09:31:47,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:31:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 09:31:47,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:47,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:47,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:31:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:47,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674692380] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:31:47,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:31:47,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-12 09:31:47,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909857891] [2022-07-12 09:31:47,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:31:47,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:31:47,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:47,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:31:47,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:31:47,854 INFO L87 Difference]: Start difference. First operand 3381 states and 4262 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) [2022-07-12 09:31:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:49,066 INFO L93 Difference]: Finished difference Result 7822 states and 9748 transitions. [2022-07-12 09:31:49,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 09:31:49,066 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 [2022-07-12 09:31:49,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:49,088 INFO L225 Difference]: With dead ends: 7822 [2022-07-12 09:31:49,089 INFO L226 Difference]: Without dead ends: 7819 [2022-07-12 09:31:49,091 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 [2022-07-12 09:31:49,091 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 1633 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:49,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1698 Valid, 1716 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:31:49,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7819 states. [2022-07-12 09:31:49,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7819 to 5171. [2022-07-12 09:31:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 4054 states have (on average 1.27084361124815) internal successors, (5152), 4117 states have internal predecessors, (5152), 548 states have call successors, (548), 451 states have call predecessors, (548), 567 states have return successors, (800), 609 states have call predecessors, (800), 547 states have call successors, (800) [2022-07-12 09:31:49,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 6500 transitions. [2022-07-12 09:31:49,349 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 6500 transitions. Word has length 74 [2022-07-12 09:31:49,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:49,349 INFO L495 AbstractCegarLoop]: Abstraction has 5171 states and 6500 transitions. [2022-07-12 09:31:49,350 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) [2022-07-12 09:31:49,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 6500 transitions. [2022-07-12 09:31:49,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 09:31:49,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:49,351 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] [2022-07-12 09:31:49,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:31:49,569 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,SelfDestructingSolverStorable11 [2022-07-12 09:31:49,569 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:49,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:49,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1151605564, now seen corresponding path program 2 times [2022-07-12 09:31:49,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:49,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495678410] [2022-07-12 09:31:49,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:49,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:49,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:49,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495678410] [2022-07-12 09:31:49,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495678410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:49,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:49,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:31:49,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212797746] [2022-07-12 09:31:49,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:49,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:31:49,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:49,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:31:49,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:31:49,609 INFO L87 Difference]: Start difference. First operand 5171 states and 6500 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) [2022-07-12 09:31:50,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:50,070 INFO L93 Difference]: Finished difference Result 7853 states and 9873 transitions. [2022-07-12 09:31:50,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 09:31:50,071 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 [2022-07-12 09:31:50,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:50,081 INFO L225 Difference]: With dead ends: 7853 [2022-07-12 09:31:50,081 INFO L226 Difference]: Without dead ends: 3778 [2022-07-12 09:31:50,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:31:50,087 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 926 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:50,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 974 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:31:50,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2022-07-12 09:31:50,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3543. [2022-07-12 09:31:50,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 2782 states have (on average 1.2552120776419842) internal successors, (3492), 2823 states have internal predecessors, (3492), 380 states have call successors, (380), 307 states have call predecessors, (380), 379 states have return successors, (526), 419 states have call predecessors, (526), 379 states have call successors, (526) [2022-07-12 09:31:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 4398 transitions. [2022-07-12 09:31:50,219 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 4398 transitions. Word has length 77 [2022-07-12 09:31:50,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:50,219 INFO L495 AbstractCegarLoop]: Abstraction has 3543 states and 4398 transitions. [2022-07-12 09:31:50,219 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) [2022-07-12 09:31:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 4398 transitions. [2022-07-12 09:31:50,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 09:31:50,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:50,221 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] [2022-07-12 09:31:50,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:31:50,222 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:50,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:50,222 INFO L85 PathProgramCache]: Analyzing trace with hash -948888726, now seen corresponding path program 1 times [2022-07-12 09:31:50,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:50,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323421010] [2022-07-12 09:31:50,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:50,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:31:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:31:50,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:50,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323421010] [2022-07-12 09:31:50,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323421010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:50,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:50,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:31:50,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464759663] [2022-07-12 09:31:50,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:50,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:31:50,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:50,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:31:50,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:50,275 INFO L87 Difference]: Start difference. First operand 3543 states and 4398 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) [2022-07-12 09:31:51,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:51,242 INFO L93 Difference]: Finished difference Result 10399 states and 12779 transitions. [2022-07-12 09:31:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 09:31:51,242 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 [2022-07-12 09:31:51,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:51,264 INFO L225 Difference]: With dead ends: 10399 [2022-07-12 09:31:51,264 INFO L226 Difference]: Without dead ends: 5778 [2022-07-12 09:31:51,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-12 09:31:51,271 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 774 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:51,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1571 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:31:51,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5778 states. [2022-07-12 09:31:51,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5778 to 5458. [2022-07-12 09:31:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5458 states, 4240 states have (on average 1.2308962264150944) internal successors, (5219), 4324 states have internal predecessors, (5219), 584 states have call successors, (584), 481 states have call predecessors, (584), 632 states have return successors, (908), 659 states have call predecessors, (908), 583 states have call successors, (908) [2022-07-12 09:31:51,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 6711 transitions. [2022-07-12 09:31:51,532 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 6711 transitions. Word has length 84 [2022-07-12 09:31:51,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:51,533 INFO L495 AbstractCegarLoop]: Abstraction has 5458 states and 6711 transitions. [2022-07-12 09:31:51,534 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) [2022-07-12 09:31:51,534 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 6711 transitions. [2022-07-12 09:31:51,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 09:31:51,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:51,537 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] [2022-07-12 09:31:51,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:31:51,537 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:51,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:51,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1201115614, now seen corresponding path program 1 times [2022-07-12 09:31:51,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:51,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868480573] [2022-07-12 09:31:51,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:51,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 09:31:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,598 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 09:31:51,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:51,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868480573] [2022-07-12 09:31:51,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868480573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:51,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:51,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:31:51,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829356697] [2022-07-12 09:31:51,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:51,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:31:51,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:51,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:31:51,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:31:51,600 INFO L87 Difference]: Start difference. First operand 5458 states and 6711 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) [2022-07-12 09:31:52,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:52,491 INFO L93 Difference]: Finished difference Result 9461 states and 11551 transitions. [2022-07-12 09:31:52,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 09:31:52,491 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 [2022-07-12 09:31:52,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:52,511 INFO L225 Difference]: With dead ends: 9461 [2022-07-12 09:31:52,511 INFO L226 Difference]: Without dead ends: 4868 [2022-07-12 09:31:52,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-12 09:31:52,580 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1709 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:52,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1748 Valid, 1395 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:31:52,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4868 states. [2022-07-12 09:31:52,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4534. [2022-07-12 09:31:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 3529 states have (on average 1.2235760838764522) internal successors, (4318), 3595 states have internal predecessors, (4318), 485 states have call successors, (485), 396 states have call predecessors, (485), 518 states have return successors, (686), 549 states have call predecessors, (686), 484 states have call successors, (686) [2022-07-12 09:31:52,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 5489 transitions. [2022-07-12 09:31:52,741 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 5489 transitions. Word has length 93 [2022-07-12 09:31:52,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:52,741 INFO L495 AbstractCegarLoop]: Abstraction has 4534 states and 5489 transitions. [2022-07-12 09:31:52,741 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) [2022-07-12 09:31:52,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 5489 transitions. [2022-07-12 09:31:52,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 09:31:52,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:52,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:52,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:31:52,744 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:52,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:52,745 INFO L85 PathProgramCache]: Analyzing trace with hash 198003052, now seen corresponding path program 1 times [2022-07-12 09:31:52,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:52,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439013315] [2022-07-12 09:31:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:52,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 09:31:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 09:31:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 09:31:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:31:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:52,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:52,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439013315] [2022-07-12 09:31:52,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439013315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:52,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:52,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:31:52,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478217214] [2022-07-12 09:31:52,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:52,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:31:52,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:52,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:31:52,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:31:52,805 INFO L87 Difference]: Start difference. First operand 4534 states and 5489 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:31:53,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:53,451 INFO L93 Difference]: Finished difference Result 4791 states and 5893 transitions. [2022-07-12 09:31:53,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:31:53,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 09:31:53,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:53,461 INFO L225 Difference]: With dead ends: 4791 [2022-07-12 09:31:53,461 INFO L226 Difference]: Without dead ends: 4599 [2022-07-12 09:31:53,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:31:53,463 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 605 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:53,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 836 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:31:53,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4599 states. [2022-07-12 09:31:53,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4599 to 4534. [2022-07-12 09:31:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 3529 states have (on average 1.2232927174837065) internal successors, (4317), 3595 states have internal predecessors, (4317), 485 states have call successors, (485), 396 states have call predecessors, (485), 518 states have return successors, (686), 549 states have call predecessors, (686), 484 states have call successors, (686) [2022-07-12 09:31:53,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 5488 transitions. [2022-07-12 09:31:53,683 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 5488 transitions. Word has length 101 [2022-07-12 09:31:53,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:53,683 INFO L495 AbstractCegarLoop]: Abstraction has 4534 states and 5488 transitions. [2022-07-12 09:31:53,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:31:53,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 5488 transitions. [2022-07-12 09:31:53,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 09:31:53,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:53,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:53,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:31:53,686 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:53,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:53,687 INFO L85 PathProgramCache]: Analyzing trace with hash 968736618, now seen corresponding path program 1 times [2022-07-12 09:31:53,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:53,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620250102] [2022-07-12 09:31:53,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:53,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 09:31:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 09:31:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 09:31:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:31:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:53,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:53,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620250102] [2022-07-12 09:31:53,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620250102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:53,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:53,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:31:53,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531512201] [2022-07-12 09:31:53,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:53,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:31:53,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:53,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:31:53,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:31:53,744 INFO L87 Difference]: Start difference. First operand 4534 states and 5488 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:31:54,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:54,904 INFO L93 Difference]: Finished difference Result 5046 states and 6295 transitions. [2022-07-12 09:31:54,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:31:54,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 09:31:54,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:54,916 INFO L225 Difference]: With dead ends: 5046 [2022-07-12 09:31:54,916 INFO L226 Difference]: Without dead ends: 4857 [2022-07-12 09:31:54,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:31:54,918 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 967 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:54,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1135 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:31:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4857 states. [2022-07-12 09:31:55,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4857 to 4728. [2022-07-12 09:31:55,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4728 states, 3702 states have (on average 1.2387898433279307) internal successors, (4586), 3769 states have internal predecessors, (4586), 499 states have call successors, (499), 402 states have call predecessors, (499), 525 states have return successors, (703), 563 states have call predecessors, (703), 498 states have call successors, (703) [2022-07-12 09:31:55,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4728 states to 4728 states and 5788 transitions. [2022-07-12 09:31:55,174 INFO L78 Accepts]: Start accepts. Automaton has 4728 states and 5788 transitions. Word has length 101 [2022-07-12 09:31:55,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:55,174 INFO L495 AbstractCegarLoop]: Abstraction has 4728 states and 5788 transitions. [2022-07-12 09:31:55,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:31:55,175 INFO L276 IsEmpty]: Start isEmpty. Operand 4728 states and 5788 transitions. [2022-07-12 09:31:55,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 09:31:55,178 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:55,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:55,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:31:55,179 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:55,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:55,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1449747860, now seen corresponding path program 1 times [2022-07-12 09:31:55,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:55,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534334762] [2022-07-12 09:31:55,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:55,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 09:31:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 09:31:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 09:31:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:31:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:55,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:55,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534334762] [2022-07-12 09:31:55,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534334762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:55,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:55,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:55,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535590356] [2022-07-12 09:31:55,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:55,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:55,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:55,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:55,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:55,252 INFO L87 Difference]: Start difference. First operand 4728 states and 5788 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:31:56,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:56,689 INFO L93 Difference]: Finished difference Result 5506 states and 7012 transitions. [2022-07-12 09:31:56,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:31:56,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 09:31:56,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:56,703 INFO L225 Difference]: With dead ends: 5506 [2022-07-12 09:31:56,704 INFO L226 Difference]: Without dead ends: 5123 [2022-07-12 09:31:56,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:31:56,708 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 972 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:56,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 1804 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1725 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:31:56,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5123 states. [2022-07-12 09:31:56,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5123 to 4910. [2022-07-12 09:31:56,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4910 states, 3863 states have (on average 1.250582448873932) internal successors, (4831), 3931 states have internal predecessors, (4831), 513 states have call successors, (513), 408 states have call predecessors, (513), 532 states have return successors, (719), 578 states have call predecessors, (719), 512 states have call successors, (719) [2022-07-12 09:31:56,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4910 states to 4910 states and 6063 transitions. [2022-07-12 09:31:56,930 INFO L78 Accepts]: Start accepts. Automaton has 4910 states and 6063 transitions. Word has length 101 [2022-07-12 09:31:56,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:56,930 INFO L495 AbstractCegarLoop]: Abstraction has 4910 states and 6063 transitions. [2022-07-12 09:31:56,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:31:56,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4910 states and 6063 transitions. [2022-07-12 09:31:56,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 09:31:56,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:56,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:56,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:31:56,934 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:56,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:56,934 INFO L85 PathProgramCache]: Analyzing trace with hash -124891666, now seen corresponding path program 1 times [2022-07-12 09:31:56,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:56,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614491998] [2022-07-12 09:31:56,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:56,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:56,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 09:31:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:56,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 09:31:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:56,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 09:31:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:31:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:56,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:56,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614491998] [2022-07-12 09:31:56,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614491998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:56,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:56,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:56,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622163785] [2022-07-12 09:31:56,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:56,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:56,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:56,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:56,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:56,991 INFO L87 Difference]: Start difference. First operand 4910 states and 6063 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:31:58,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:58,435 INFO L93 Difference]: Finished difference Result 6181 states and 8055 transitions. [2022-07-12 09:31:58,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:31:58,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 09:31:58,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:58,448 INFO L225 Difference]: With dead ends: 6181 [2022-07-12 09:31:58,448 INFO L226 Difference]: Without dead ends: 5616 [2022-07-12 09:31:58,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:31:58,452 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 968 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:58,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 1797 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:31:58,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5616 states. [2022-07-12 09:31:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5616 to 5277. [2022-07-12 09:31:58,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5277 states, 4188 states have (on average 1.2717287488061126) internal successors, (5326), 4258 states have internal predecessors, (5326), 541 states have call successors, (541), 420 states have call predecessors, (541), 546 states have return successors, (755), 608 states have call predecessors, (755), 540 states have call successors, (755) [2022-07-12 09:31:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 6622 transitions. [2022-07-12 09:31:58,833 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 6622 transitions. Word has length 101 [2022-07-12 09:31:58,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:58,833 INFO L495 AbstractCegarLoop]: Abstraction has 5277 states and 6622 transitions. [2022-07-12 09:31:58,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:31:58,834 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 6622 transitions. [2022-07-12 09:31:58,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 09:31:58,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:58,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:58,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:31:58,837 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:58,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:58,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1441866284, now seen corresponding path program 1 times [2022-07-12 09:31:58,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:58,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503884516] [2022-07-12 09:31:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:58,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 09:31:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 09:31:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 09:31:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:31:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:58,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:58,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503884516] [2022-07-12 09:31:58,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503884516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:58,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:58,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:58,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774734785] [2022-07-12 09:31:58,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:58,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:58,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:58,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:58,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:58,903 INFO L87 Difference]: Start difference. First operand 5277 states and 6622 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:00,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:00,463 INFO L93 Difference]: Finished difference Result 7490 states and 10074 transitions. [2022-07-12 09:32:00,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:00,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 09:32:00,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:00,485 INFO L225 Difference]: With dead ends: 7490 [2022-07-12 09:32:00,485 INFO L226 Difference]: Without dead ends: 6558 [2022-07-12 09:32:00,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:00,489 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 967 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:00,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1792 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:32:00,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6558 states. [2022-07-12 09:32:00,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6558 to 6014. [2022-07-12 09:32:00,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6014 states, 4841 states have (on average 1.305515389382359) internal successors, (6320), 4915 states have internal predecessors, (6320), 597 states have call successors, (597), 444 states have call predecessors, (597), 574 states have return successors, (833), 668 states have call predecessors, (833), 596 states have call successors, (833) [2022-07-12 09:32:00,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6014 states to 6014 states and 7750 transitions. [2022-07-12 09:32:00,815 INFO L78 Accepts]: Start accepts. Automaton has 6014 states and 7750 transitions. Word has length 101 [2022-07-12 09:32:00,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:00,816 INFO L495 AbstractCegarLoop]: Abstraction has 6014 states and 7750 transitions. [2022-07-12 09:32:00,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:00,816 INFO L276 IsEmpty]: Start isEmpty. Operand 6014 states and 7750 transitions. [2022-07-12 09:32:00,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 09:32:00,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:00,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:00,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:32:00,821 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:00,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:00,822 INFO L85 PathProgramCache]: Analyzing trace with hash 384028206, now seen corresponding path program 1 times [2022-07-12 09:32:00,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:00,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315567448] [2022-07-12 09:32:00,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:00,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 09:32:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 09:32:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 09:32:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:32:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:00,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:00,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315567448] [2022-07-12 09:32:00,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315567448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:00,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:00,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:00,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043136836] [2022-07-12 09:32:00,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:00,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:00,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:00,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:00,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:00,918 INFO L87 Difference]: Start difference. First operand 6014 states and 7750 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:02,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:02,442 INFO L93 Difference]: Finished difference Result 10109 states and 14132 transitions. [2022-07-12 09:32:02,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:02,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 09:32:02,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:02,501 INFO L225 Difference]: With dead ends: 10109 [2022-07-12 09:32:02,501 INFO L226 Difference]: Without dead ends: 8440 [2022-07-12 09:32:02,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:02,509 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 966 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:02,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 1787 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:32:02,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8440 states. [2022-07-12 09:32:02,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8440 to 7495. [2022-07-12 09:32:02,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7495 states, 6154 states have (on average 1.3516412089697758) internal successors, (8318), 6236 states have internal predecessors, (8318), 709 states have call successors, (709), 492 states have call predecessors, (709), 630 states have return successors, (1007), 788 states have call predecessors, (1007), 708 states have call successors, (1007) [2022-07-12 09:32:02,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7495 states to 7495 states and 10034 transitions. [2022-07-12 09:32:02,862 INFO L78 Accepts]: Start accepts. Automaton has 7495 states and 10034 transitions. Word has length 101 [2022-07-12 09:32:02,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:02,863 INFO L495 AbstractCegarLoop]: Abstraction has 7495 states and 10034 transitions. [2022-07-12 09:32:02,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:02,863 INFO L276 IsEmpty]: Start isEmpty. Operand 7495 states and 10034 transitions. [2022-07-12 09:32:02,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 09:32:02,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:02,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:02,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:32:02,874 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:02,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:02,875 INFO L85 PathProgramCache]: Analyzing trace with hash -758474260, now seen corresponding path program 1 times [2022-07-12 09:32:02,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:02,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714494552] [2022-07-12 09:32:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:02,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:02,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:02,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 09:32:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:02,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 09:32:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:02,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 09:32:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:32:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:02,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:02,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:02,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714494552] [2022-07-12 09:32:02,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714494552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:02,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:02,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:02,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468580260] [2022-07-12 09:32:02,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:02,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:02,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:02,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:02,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:02,954 INFO L87 Difference]: Start difference. First operand 7495 states and 10034 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:04,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:04,758 INFO L93 Difference]: Finished difference Result 16612 states and 24200 transitions. [2022-07-12 09:32:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:32:04,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 09:32:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:04,788 INFO L225 Difference]: With dead ends: 16612 [2022-07-12 09:32:04,788 INFO L226 Difference]: Without dead ends: 13462 [2022-07-12 09:32:04,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:32:04,798 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 1018 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:04,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1860 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:32:04,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13462 states. [2022-07-12 09:32:05,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13462 to 10424. [2022-07-12 09:32:05,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10424 states, 8763 states have (on average 1.4040853588953555) internal successors, (12304), 8861 states have internal predecessors, (12304), 917 states have call successors, (917), 588 states have call predecessors, (917), 742 states have return successors, (1393), 1012 states have call predecessors, (1393), 916 states have call successors, (1393) [2022-07-12 09:32:05,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10424 states to 10424 states and 14614 transitions. [2022-07-12 09:32:05,268 INFO L78 Accepts]: Start accepts. Automaton has 10424 states and 14614 transitions. Word has length 101 [2022-07-12 09:32:05,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:05,269 INFO L495 AbstractCegarLoop]: Abstraction has 10424 states and 14614 transitions. [2022-07-12 09:32:05,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:05,269 INFO L276 IsEmpty]: Start isEmpty. Operand 10424 states and 14614 transitions. [2022-07-12 09:32:05,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 09:32:05,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:05,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:05,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 09:32:05,277 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:05,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:05,278 INFO L85 PathProgramCache]: Analyzing trace with hash -518234514, now seen corresponding path program 1 times [2022-07-12 09:32:05,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:05,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175993167] [2022-07-12 09:32:05,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:05,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 09:32:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 09:32:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 09:32:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:32:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:05,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:05,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175993167] [2022-07-12 09:32:05,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175993167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:05,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:05,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:05,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844942399] [2022-07-12 09:32:05,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:05,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:05,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:05,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:05,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:05,339 INFO L87 Difference]: Start difference. First operand 10424 states and 14614 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:07,780 INFO L93 Difference]: Finished difference Result 27827 states and 41838 transitions. [2022-07-12 09:32:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:32:07,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 09:32:07,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:07,908 INFO L225 Difference]: With dead ends: 27827 [2022-07-12 09:32:07,908 INFO L226 Difference]: Without dead ends: 21748 [2022-07-12 09:32:07,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:32:07,963 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 1137 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:07,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 1763 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:32:07,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21748 states. [2022-07-12 09:32:08,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21748 to 16105. [2022-07-12 09:32:08,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16105 states, 13820 states have (on average 1.4496382054992765) internal successors, (20034), 13950 states have internal predecessors, (20034), 1317 states have call successors, (1317), 780 states have call predecessors, (1317), 966 states have return successors, (2311), 1444 states have call predecessors, (2311), 1316 states have call successors, (2311) [2022-07-12 09:32:09,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16105 states to 16105 states and 23662 transitions. [2022-07-12 09:32:09,032 INFO L78 Accepts]: Start accepts. Automaton has 16105 states and 23662 transitions. Word has length 101 [2022-07-12 09:32:09,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:09,032 INFO L495 AbstractCegarLoop]: Abstraction has 16105 states and 23662 transitions. [2022-07-12 09:32:09,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:09,032 INFO L276 IsEmpty]: Start isEmpty. Operand 16105 states and 23662 transitions. [2022-07-12 09:32:09,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 09:32:09,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:09,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:09,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 09:32:09,068 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:09,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:09,068 INFO L85 PathProgramCache]: Analyzing trace with hash 320799148, now seen corresponding path program 1 times [2022-07-12 09:32:09,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:09,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389773689] [2022-07-12 09:32:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:09,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:09,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:09,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 09:32:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:09,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 09:32:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:09,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 09:32:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:09,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:32:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:09,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:09,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:09,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389773689] [2022-07-12 09:32:09,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389773689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:09,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:09,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:09,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570902571] [2022-07-12 09:32:09,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:09,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:09,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:09,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:09,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:09,139 INFO L87 Difference]: Start difference. First operand 16105 states and 23662 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:12,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:12,498 INFO L93 Difference]: Finished difference Result 49186 states and 76020 transitions. [2022-07-12 09:32:12,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:32:12,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 09:32:12,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:12,619 INFO L225 Difference]: With dead ends: 49186 [2022-07-12 09:32:12,619 INFO L226 Difference]: Without dead ends: 37426 [2022-07-12 09:32:12,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:32:12,660 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 1038 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:12,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1376 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:32:12,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37426 states. [2022-07-12 09:32:14,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37426 to 27594. [2022-07-12 09:32:14,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27594 states, 24093 states have (on average 1.4850786535508238) internal successors, (35780), 24287 states have internal predecessors, (35780), 2085 states have call successors, (2085), 1164 states have call predecessors, (2085), 1414 states have return successors, (4601), 2276 states have call predecessors, (4601), 2084 states have call successors, (4601) [2022-07-12 09:32:14,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27594 states to 27594 states and 42466 transitions. [2022-07-12 09:32:14,218 INFO L78 Accepts]: Start accepts. Automaton has 27594 states and 42466 transitions. Word has length 101 [2022-07-12 09:32:14,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:14,218 INFO L495 AbstractCegarLoop]: Abstraction has 27594 states and 42466 transitions. [2022-07-12 09:32:14,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:14,218 INFO L276 IsEmpty]: Start isEmpty. Operand 27594 states and 42466 transitions. [2022-07-12 09:32:14,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 09:32:14,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:14,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:14,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 09:32:14,234 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:14,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:14,234 INFO L85 PathProgramCache]: Analyzing trace with hash 347864750, now seen corresponding path program 1 times [2022-07-12 09:32:14,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:14,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914307831] [2022-07-12 09:32:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:14,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 09:32:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 09:32:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 09:32:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:32:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:14,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:14,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914307831] [2022-07-12 09:32:14,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914307831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:14,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:14,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:14,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960522626] [2022-07-12 09:32:14,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:14,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:14,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:14,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:14,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:14,305 INFO L87 Difference]: Start difference. First operand 27594 states and 42466 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:19,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:19,422 INFO L93 Difference]: Finished difference Result 89215 states and 142326 transitions. [2022-07-12 09:32:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:32:19,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 09:32:19,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:19,640 INFO L225 Difference]: With dead ends: 89215 [2022-07-12 09:32:19,640 INFO L226 Difference]: Without dead ends: 65966 [2022-07-12 09:32:19,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:32:19,727 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 1018 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:19,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 1751 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:32:19,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65966 states. [2022-07-12 09:32:23,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65966 to 50636. [2022-07-12 09:32:23,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50636 states, 44767 states have (on average 1.5098621752630286) internal successors, (67592), 45089 states have internal predecessors, (67592), 3557 states have call successors, (3557), 1932 states have call predecessors, (3557), 2310 states have return successors, (10575), 3876 states have call predecessors, (10575), 3556 states have call successors, (10575) [2022-07-12 09:32:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50636 states to 50636 states and 81724 transitions. [2022-07-12 09:32:23,274 INFO L78 Accepts]: Start accepts. Automaton has 50636 states and 81724 transitions. Word has length 101 [2022-07-12 09:32:23,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:23,274 INFO L495 AbstractCegarLoop]: Abstraction has 50636 states and 81724 transitions. [2022-07-12 09:32:23,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:23,275 INFO L276 IsEmpty]: Start isEmpty. Operand 50636 states and 81724 transitions. [2022-07-12 09:32:23,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 09:32:23,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:23,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:23,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 09:32:23,300 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:23,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:23,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2081969200, now seen corresponding path program 1 times [2022-07-12 09:32:23,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:23,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102502875] [2022-07-12 09:32:23,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:23,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 09:32:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 09:32:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 09:32:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:32:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:23,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:23,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102502875] [2022-07-12 09:32:23,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102502875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:23,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:23,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:23,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488783659] [2022-07-12 09:32:23,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:23,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:23,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:23,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:23,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:23,434 INFO L87 Difference]: Start difference. First operand 50636 states and 81724 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:32,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:32,589 INFO L93 Difference]: Finished difference Result 168959 states and 280078 transitions. [2022-07-12 09:32:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:32:32,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 09:32:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:33,235 INFO L225 Difference]: With dead ends: 168959 [2022-07-12 09:32:33,236 INFO L226 Difference]: Without dead ends: 122668 [2022-07-12 09:32:33,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:32:33,395 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 963 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:33,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 1759 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:32:33,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122668 states. [2022-07-12 09:32:39,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122668 to 96589. [2022-07-12 09:32:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96589 states, 86112 states have (on average 1.525199739873653) internal successors, (131338), 86690 states have internal predecessors, (131338), 6373 states have call successors, (6373), 3468 states have call predecessors, (6373), 4102 states have return successors, (26769), 6948 states have call predecessors, (26769), 6372 states have call successors, (26769) [2022-07-12 09:32:39,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96589 states to 96589 states and 164480 transitions. [2022-07-12 09:32:39,909 INFO L78 Accepts]: Start accepts. Automaton has 96589 states and 164480 transitions. Word has length 101 [2022-07-12 09:32:39,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:39,909 INFO L495 AbstractCegarLoop]: Abstraction has 96589 states and 164480 transitions. [2022-07-12 09:32:39,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:39,909 INFO L276 IsEmpty]: Start isEmpty. Operand 96589 states and 164480 transitions. [2022-07-12 09:32:39,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 09:32:39,955 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:39,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:39,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 09:32:39,955 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:39,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:39,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1325775250, now seen corresponding path program 1 times [2022-07-12 09:32:39,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:39,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548390559] [2022-07-12 09:32:39,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:39,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:39,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:39,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 09:32:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:39,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 09:32:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:40,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 09:32:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:40,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 09:32:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:40,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:40,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:40,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548390559] [2022-07-12 09:32:40,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548390559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:40,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:40,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:40,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142328100] [2022-07-12 09:32:40,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:40,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:40,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:40,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:40,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:40,029 INFO L87 Difference]: Start difference. First operand 96589 states and 164480 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:55,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:55,879 INFO L93 Difference]: Finished difference Result 261839 states and 431822 transitions. [2022-07-12 09:32:55,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:32:55,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-07-12 09:32:55,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:56,815 INFO L225 Difference]: With dead ends: 261839 [2022-07-12 09:32:56,816 INFO L226 Difference]: Without dead ends: 169596 [2022-07-12 09:32:57,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-12 09:32:57,010 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 652 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:57,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1415 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:32:57,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169596 states.