./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.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 0b8de634f132d76c1b6698e4c3a5f12df478fc7c8b9ceb30d48afc80707f7564 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:53:06,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:53:06,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:53:06,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:53:06,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:53:06,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:53:06,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:53:06,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:53:06,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:53:06,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:53:06,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:53:06,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:53:06,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:53:06,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:53:06,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:53:06,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:53:06,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:53:06,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:53:06,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:53:06,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:53:06,562 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:53:06,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:53:06,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:53:06,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:53:06,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:53:06,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:53:06,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:53:06,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:53:06,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:53:06,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:53:06,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:53:06,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:53:06,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:53:06,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:53:06,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:53:06,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:53:06,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:53:06,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:53:06,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:53:06,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:53:06,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:53:06,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:53:06,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:53:06,607 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:53:06,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:53:06,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:53:06,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:53:06,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:53:06,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:53:06,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:53:06,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:53:06,609 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:53:06,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:53:06,610 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:53:06,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:53:06,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:53:06,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:53:06,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:53:06,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:53:06,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:53:06,611 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:53:06,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:53:06,611 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:53:06,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:53:06,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:53:06,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:53:06,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:53:06,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:53:06,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:53:06,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:53:06,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:53:06,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:53:06,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:53:06,613 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:53:06,613 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:53:06,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:53:06,614 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b8de634f132d76c1b6698e4c3a5f12df478fc7c8b9ceb30d48afc80707f7564 [2022-07-22 20:53:06,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:53:06,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:53:06,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:53:06,803 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:53:06,804 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:53:06,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c [2022-07-22 20:53:06,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94996cfa2/69d5788efb344e458eb47d313657259f/FLAG0a4f04b7b [2022-07-22 20:53:07,283 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:53:07,284 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c [2022-07-22 20:53:07,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94996cfa2/69d5788efb344e458eb47d313657259f/FLAG0a4f04b7b [2022-07-22 20:53:07,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94996cfa2/69d5788efb344e458eb47d313657259f [2022-07-22 20:53:07,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:53:07,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:53:07,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:53:07,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:53:07,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:53:07,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:53:07" (1/1) ... [2022-07-22 20:53:07,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16e979ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:07, skipping insertion in model container [2022-07-22 20:53:07,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:53:07" (1/1) ... [2022-07-22 20:53:07,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:53:07,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:53:07,484 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c[911,924] [2022-07-22 20:53:07,554 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c[8416,8429] [2022-07-22 20:53:07,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:53:07,639 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:53:07,646 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c[911,924] [2022-07-22 20:53:07,656 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-1.c[8416,8429] [2022-07-22 20:53:07,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:53:07,708 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:53:07,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:07 WrapperNode [2022-07-22 20:53:07,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:53:07,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:53:07,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:53:07,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:53:07,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:07" (1/1) ... [2022-07-22 20:53:07,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:07" (1/1) ... [2022-07-22 20:53:07,774 INFO L137 Inliner]: procedures = 77, calls = 95, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 1025 [2022-07-22 20:53:07,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:53:07,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:53:07,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:53:07,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:53:07,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:07" (1/1) ... [2022-07-22 20:53:07,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:07" (1/1) ... [2022-07-22 20:53:07,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:07" (1/1) ... [2022-07-22 20:53:07,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:07" (1/1) ... [2022-07-22 20:53:07,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:07" (1/1) ... [2022-07-22 20:53:07,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:07" (1/1) ... [2022-07-22 20:53:07,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:07" (1/1) ... [2022-07-22 20:53:07,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:53:07,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:53:07,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:53:07,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:53:07,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:07" (1/1) ... [2022-07-22 20:53:07,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:53:07,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:53:07,856 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) [2022-07-22 20:53:07,868 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 [2022-07-22 20:53:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:53:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 20:53:07,887 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 20:53:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-22 20:53:07,888 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-22 20:53:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-22 20:53:07,889 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-22 20:53:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-22 20:53:07,890 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-22 20:53:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-22 20:53:07,890 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-22 20:53:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-22 20:53:07,890 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-22 20:53:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-22 20:53:07,890 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-22 20:53:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-22 20:53:07,891 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-22 20:53:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-22 20:53:07,891 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-22 20:53:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-22 20:53:07,891 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-22 20:53:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-22 20:53:07,891 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-22 20:53:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:53:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-22 20:53:07,892 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-22 20:53:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-22 20:53:07,892 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-22 20:53:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:53:07,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:53:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-22 20:53:07,893 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-22 20:53:07,893 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-22 20:53:07,893 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-22 20:53:08,026 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:53:08,028 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:53:08,592 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-22 20:53:08,593 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-22 20:53:08,659 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:53:08,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:53:08,668 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2022-07-22 20:53:08,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:53:08 BoogieIcfgContainer [2022-07-22 20:53:08,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:53:08,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:53:08,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:53:08,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:53:08,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:53:07" (1/3) ... [2022-07-22 20:53:08,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afe9f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:53:08, skipping insertion in model container [2022-07-22 20:53:08,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:07" (2/3) ... [2022-07-22 20:53:08,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afe9f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:53:08, skipping insertion in model container [2022-07-22 20:53:08,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:53:08" (3/3) ... [2022-07-22 20:53:08,684 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.11.cil-1.c [2022-07-22 20:53:08,694 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:53:08,696 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:53:08,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:53:08,777 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@1ebe024d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@67869273 [2022-07-22 20:53:08,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:53:08,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 482 states, 421 states have (on average 1.6389548693586697) internal successors, (690), 429 states have internal predecessors, (690), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-22 20:53:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:53:08,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:08,804 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] [2022-07-22 20:53:08,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:08,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:08,812 INFO L85 PathProgramCache]: Analyzing trace with hash 42670934, now seen corresponding path program 1 times [2022-07-22 20:53:08,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:08,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407624330] [2022-07-22 20:53:08,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:08,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:09,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:53:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:09,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:53:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:09,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:53:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:09,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:53:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:09,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:53:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:09,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:53:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:09,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:09,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407624330] [2022-07-22 20:53:09,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407624330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:09,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:09,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:53:09,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943414959] [2022-07-22 20:53:09,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:09,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:53:09,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:09,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:53:09,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:53:09,153 INFO L87 Difference]: Start difference. First operand has 482 states, 421 states have (on average 1.6389548693586697) internal successors, (690), 429 states have internal predecessors, (690), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) 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) [2022-07-22 20:53:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:10,128 INFO L93 Difference]: Finished difference Result 1087 states and 1741 transitions. [2022-07-22 20:53:10,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:53:10,130 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 [2022-07-22 20:53:10,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:10,140 INFO L225 Difference]: With dead ends: 1087 [2022-07-22 20:53:10,140 INFO L226 Difference]: Without dead ends: 622 [2022-07-22 20:53:10,144 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 [2022-07-22 20:53:10,149 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 1220 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:10,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 2129 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:53:10,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-07-22 20:53:10,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 583. [2022-07-22 20:53:10,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 503 states have (on average 1.52882703777336) internal successors, (769), 510 states have internal predecessors, (769), 56 states have call successors, (56), 22 states have call predecessors, (56), 22 states have return successors, (57), 53 states have call predecessors, (57), 52 states have call successors, (57) [2022-07-22 20:53:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 882 transitions. [2022-07-22 20:53:10,228 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 882 transitions. Word has length 65 [2022-07-22 20:53:10,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:10,228 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 882 transitions. [2022-07-22 20:53:10,228 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) [2022-07-22 20:53:10,228 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 882 transitions. [2022-07-22 20:53:10,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:53:10,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:10,231 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] [2022-07-22 20:53:10,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:53:10,231 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:10,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:10,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1721559574, now seen corresponding path program 1 times [2022-07-22 20:53:10,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:10,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282182075] [2022-07-22 20:53:10,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:10,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:10,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:10,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:53:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:53:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:10,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:53:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:10,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:53:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:10,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:53:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:10,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:53:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:10,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:10,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:10,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282182075] [2022-07-22 20:53:10,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282182075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:10,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:10,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:53:10,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068145334] [2022-07-22 20:53:10,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:10,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:53:10,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:10,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:53:10,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:53:10,315 INFO L87 Difference]: Start difference. First operand 583 states and 882 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) [2022-07-22 20:53:11,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:11,242 INFO L93 Difference]: Finished difference Result 980 states and 1448 transitions. [2022-07-22 20:53:11,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 20:53:11,243 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 [2022-07-22 20:53:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:11,246 INFO L225 Difference]: With dead ends: 980 [2022-07-22 20:53:11,247 INFO L226 Difference]: Without dead ends: 771 [2022-07-22 20:53:11,247 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 [2022-07-22 20:53:11,248 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 1732 mSDsluCounter, 1628 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:11,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1763 Valid, 2436 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:53:11,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-07-22 20:53:11,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 695. [2022-07-22 20:53:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 593 states have (on average 1.5092748735244519) internal successors, (895), 602 states have internal predecessors, (895), 69 states have call successors, (69), 29 states have call predecessors, (69), 31 states have return successors, (78), 67 states have call predecessors, (78), 65 states have call successors, (78) [2022-07-22 20:53:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1042 transitions. [2022-07-22 20:53:11,279 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1042 transitions. Word has length 65 [2022-07-22 20:53:11,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:11,279 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 1042 transitions. [2022-07-22 20:53:11,279 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) [2022-07-22 20:53:11,279 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1042 transitions. [2022-07-22 20:53:11,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:53:11,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:11,282 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] [2022-07-22 20:53:11,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:53:11,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:11,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:11,282 INFO L85 PathProgramCache]: Analyzing trace with hash -307026536, now seen corresponding path program 1 times [2022-07-22 20:53:11,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:11,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889012530] [2022-07-22 20:53:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:11,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:11,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:11,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:53:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:11,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:53:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:11,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:53:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:11,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:53:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:11,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:53:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:11,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:53:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:11,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:11,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889012530] [2022-07-22 20:53:11,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889012530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:11,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:11,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 20:53:11,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481261267] [2022-07-22 20:53:11,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:11,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:53:11,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:11,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:53:11,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:53:11,394 INFO L87 Difference]: Start difference. First operand 695 states and 1042 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 20:53:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:13,055 INFO L93 Difference]: Finished difference Result 2241 states and 3240 transitions. [2022-07-22 20:53:13,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 20:53:13,056 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-22 20:53:13,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:13,064 INFO L225 Difference]: With dead ends: 2241 [2022-07-22 20:53:13,064 INFO L226 Difference]: Without dead ends: 1908 [2022-07-22 20:53:13,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 20:53:13,067 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 3705 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3723 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 2573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:13,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3723 Valid, 3167 Invalid, 2573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 1901 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:53:13,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2022-07-22 20:53:13,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1748. [2022-07-22 20:53:13,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1441 states have (on average 1.4149895905621097) internal successors, (2039), 1465 states have internal predecessors, (2039), 179 states have call successors, (179), 112 states have call predecessors, (179), 126 states have return successors, (211), 173 states have call predecessors, (211), 175 states have call successors, (211) [2022-07-22 20:53:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2429 transitions. [2022-07-22 20:53:13,133 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2429 transitions. Word has length 65 [2022-07-22 20:53:13,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:13,133 INFO L495 AbstractCegarLoop]: Abstraction has 1748 states and 2429 transitions. [2022-07-22 20:53:13,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 20:53:13,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2429 transitions. [2022-07-22 20:53:13,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:53:13,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:13,135 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] [2022-07-22 20:53:13,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 20:53:13,135 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:13,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:13,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1016929551, now seen corresponding path program 1 times [2022-07-22 20:53:13,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:13,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59982194] [2022-07-22 20:53:13,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:13,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:13,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:13,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:53:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:13,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:53:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:13,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:53:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:13,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:53:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:13,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 20:53:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:13,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:13,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:13,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:13,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59982194] [2022-07-22 20:53:13,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59982194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:13,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:13,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:53:13,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291522253] [2022-07-22 20:53:13,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:13,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:53:13,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:13,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:53:13,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:53:13,223 INFO L87 Difference]: Start difference. First operand 1748 states and 2429 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:53:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:14,167 INFO L93 Difference]: Finished difference Result 3276 states and 4508 transitions. [2022-07-22 20:53:14,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:53:14,169 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-22 20:53:14,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:14,176 INFO L225 Difference]: With dead ends: 3276 [2022-07-22 20:53:14,176 INFO L226 Difference]: Without dead ends: 1896 [2022-07-22 20:53:14,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:53:14,180 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 628 mSDsluCounter, 2478 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:14,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 3190 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1658 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:53:14,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2022-07-22 20:53:14,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1788. [2022-07-22 20:53:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1473 states have (on average 1.4019008825526138) internal successors, (2065), 1497 states have internal predecessors, (2065), 179 states have call successors, (179), 112 states have call predecessors, (179), 134 states have return successors, (219), 181 states have call predecessors, (219), 175 states have call successors, (219) [2022-07-22 20:53:14,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2463 transitions. [2022-07-22 20:53:14,235 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2463 transitions. Word has length 66 [2022-07-22 20:53:14,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:14,236 INFO L495 AbstractCegarLoop]: Abstraction has 1788 states and 2463 transitions. [2022-07-22 20:53:14,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:53:14,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2463 transitions. [2022-07-22 20:53:14,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:53:14,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:14,237 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] [2022-07-22 20:53:14,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 20:53:14,237 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:14,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:14,238 INFO L85 PathProgramCache]: Analyzing trace with hash -2046288849, now seen corresponding path program 1 times [2022-07-22 20:53:14,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:14,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637103350] [2022-07-22 20:53:14,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:14,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:14,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:14,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:53:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:14,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:53:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:14,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:53:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:14,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:53:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:14,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 20:53:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:14,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:14,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:14,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:14,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637103350] [2022-07-22 20:53:14,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637103350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:14,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:14,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 20:53:14,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796929169] [2022-07-22 20:53:14,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:14,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:53:14,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:14,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:53:14,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:53:14,348 INFO L87 Difference]: Start difference. First operand 1788 states and 2463 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 20:53:15,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:15,857 INFO L93 Difference]: Finished difference Result 5360 states and 7337 transitions. [2022-07-22 20:53:15,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 20:53:15,857 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-07-22 20:53:15,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:15,865 INFO L225 Difference]: With dead ends: 5360 [2022-07-22 20:53:15,865 INFO L226 Difference]: Without dead ends: 2179 [2022-07-22 20:53:15,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 20:53:15,871 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 3821 mSDsluCounter, 2339 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3839 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 2500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:15,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3839 Valid, 3188 Invalid, 2500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:53:15,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2179 states. [2022-07-22 20:53:15,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2179 to 1999. [2022-07-22 20:53:15,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1999 states, 1612 states have (on average 1.3591811414392059) internal successors, (2191), 1638 states have internal predecessors, (2191), 219 states have call successors, (219), 140 states have call predecessors, (219), 166 states have return successors, (265), 223 states have call predecessors, (265), 215 states have call successors, (265) [2022-07-22 20:53:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 2675 transitions. [2022-07-22 20:53:15,947 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 2675 transitions. Word has length 66 [2022-07-22 20:53:15,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:15,947 INFO L495 AbstractCegarLoop]: Abstraction has 1999 states and 2675 transitions. [2022-07-22 20:53:15,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 20:53:15,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 2675 transitions. [2022-07-22 20:53:15,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:53:15,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:15,949 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:15,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 20:53:15,949 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:15,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:15,950 INFO L85 PathProgramCache]: Analyzing trace with hash 630136045, now seen corresponding path program 1 times [2022-07-22 20:53:15,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:15,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878847776] [2022-07-22 20:53:15,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:15,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:15,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:15,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:53:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:15,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:53:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:16,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:53:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:16,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:53:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:16,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:53:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:16,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:53:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:16,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:53:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:53:16,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:16,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878847776] [2022-07-22 20:53:16,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878847776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:16,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:16,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:53:16,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489068622] [2022-07-22 20:53:16,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:16,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:53:16,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:16,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:53:16,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:53:16,047 INFO L87 Difference]: Start difference. First operand 1999 states and 2675 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:53:16,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:16,950 INFO L93 Difference]: Finished difference Result 3824 states and 5077 transitions. [2022-07-22 20:53:16,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:53:16,950 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-07-22 20:53:16,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:16,957 INFO L225 Difference]: With dead ends: 3824 [2022-07-22 20:53:16,957 INFO L226 Difference]: Without dead ends: 2193 [2022-07-22 20:53:16,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:53:16,960 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 623 mSDsluCounter, 2437 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:16,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 3137 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:53:16,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2022-07-22 20:53:17,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2059. [2022-07-22 20:53:17,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 1660 states have (on average 1.3451807228915662) internal successors, (2233), 1686 states have internal predecessors, (2233), 219 states have call successors, (219), 140 states have call predecessors, (219), 178 states have return successors, (277), 235 states have call predecessors, (277), 215 states have call successors, (277) [2022-07-22 20:53:17,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2729 transitions. [2022-07-22 20:53:17,022 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2729 transitions. Word has length 91 [2022-07-22 20:53:17,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:17,023 INFO L495 AbstractCegarLoop]: Abstraction has 2059 states and 2729 transitions. [2022-07-22 20:53:17,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:53:17,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2729 transitions. [2022-07-22 20:53:17,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:53:17,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:17,028 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:17,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 20:53:17,028 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:17,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:17,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1074036719, now seen corresponding path program 1 times [2022-07-22 20:53:17,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:17,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117359918] [2022-07-22 20:53:17,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:17,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:17,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:17,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:53:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:17,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:53:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:17,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:53:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:17,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:53:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:17,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:53:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:17,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:53:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:17,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:53:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:17,126 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:53:17,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:17,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117359918] [2022-07-22 20:53:17,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117359918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:17,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:17,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:53:17,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790065118] [2022-07-22 20:53:17,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:17,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:53:17,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:17,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:53:17,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:53:17,128 INFO L87 Difference]: Start difference. First operand 2059 states and 2729 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:53:18,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:18,014 INFO L93 Difference]: Finished difference Result 3586 states and 4693 transitions. [2022-07-22 20:53:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 20:53:18,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-22 20:53:18,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:18,021 INFO L225 Difference]: With dead ends: 3586 [2022-07-22 20:53:18,022 INFO L226 Difference]: Without dead ends: 2133 [2022-07-22 20:53:18,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-22 20:53:18,025 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 1735 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:18,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 2167 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:53:18,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2022-07-22 20:53:18,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 1838. [2022-07-22 20:53:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1492 states have (on average 1.3505361930294906) internal successors, (2015), 1513 states have internal predecessors, (2015), 191 states have call successors, (191), 121 states have call predecessors, (191), 153 states have return successors, (237), 205 states have call predecessors, (237), 187 states have call successors, (237) [2022-07-22 20:53:18,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2443 transitions. [2022-07-22 20:53:18,075 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2443 transitions. Word has length 91 [2022-07-22 20:53:18,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:18,076 INFO L495 AbstractCegarLoop]: Abstraction has 1838 states and 2443 transitions. [2022-07-22 20:53:18,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:53:18,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2443 transitions. [2022-07-22 20:53:18,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:53:18,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:18,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:18,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 20:53:18,077 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:18,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:18,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1281768531, now seen corresponding path program 1 times [2022-07-22 20:53:18,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:18,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761946212] [2022-07-22 20:53:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:18,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:53:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:53:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:53:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:53:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:53:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:53:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:53:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 20:53:18,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:18,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761946212] [2022-07-22 20:53:18,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761946212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:18,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:18,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:18,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828205001] [2022-07-22 20:53:18,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:18,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:18,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:18,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:18,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:18,156 INFO L87 Difference]: Start difference. First operand 1838 states and 2443 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 20:53:18,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:18,585 INFO L93 Difference]: Finished difference Result 4990 states and 6555 transitions. [2022-07-22 20:53:18,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:53:18,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-22 20:53:18,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:18,598 INFO L225 Difference]: With dead ends: 4990 [2022-07-22 20:53:18,598 INFO L226 Difference]: Without dead ends: 3521 [2022-07-22 20:53:18,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:53:18,602 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 1652 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:18,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 1827 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:53:18,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2022-07-22 20:53:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 3307. [2022-07-22 20:53:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 2641 states have (on average 1.30367285119273) internal successors, (3443), 2691 states have internal predecessors, (3443), 352 states have call successors, (352), 234 states have call predecessors, (352), 312 states have return successors, (520), 384 states have call predecessors, (520), 348 states have call successors, (520) [2022-07-22 20:53:18,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 4315 transitions. [2022-07-22 20:53:18,698 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 4315 transitions. Word has length 91 [2022-07-22 20:53:18,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:18,698 INFO L495 AbstractCegarLoop]: Abstraction has 3307 states and 4315 transitions. [2022-07-22 20:53:18,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 20:53:18,698 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 4315 transitions. [2022-07-22 20:53:18,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:53:18,700 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:18,700 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:18,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 20:53:18,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:18,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:18,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1955360687, now seen corresponding path program 1 times [2022-07-22 20:53:18,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:18,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29671070] [2022-07-22 20:53:18,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:18,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:53:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:53:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:53:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:53:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:53:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:53:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:53:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:53:18,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:18,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29671070] [2022-07-22 20:53:18,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29671070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:18,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:18,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:53:18,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117403650] [2022-07-22 20:53:18,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:18,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:53:18,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:18,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:53:18,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:53:18,758 INFO L87 Difference]: Start difference. First operand 3307 states and 4315 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:53:19,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:19,193 INFO L93 Difference]: Finished difference Result 4891 states and 6299 transitions. [2022-07-22 20:53:19,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 20:53:19,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-22 20:53:19,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:19,200 INFO L225 Difference]: With dead ends: 4891 [2022-07-22 20:53:19,201 INFO L226 Difference]: Without dead ends: 1953 [2022-07-22 20:53:19,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:53:19,206 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 740 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:19,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1948 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:53:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2022-07-22 20:53:19,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1838. [2022-07-22 20:53:19,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1492 states have (on average 1.3257372654155497) internal successors, (1978), 1513 states have internal predecessors, (1978), 191 states have call successors, (191), 121 states have call predecessors, (191), 153 states have return successors, (237), 205 states have call predecessors, (237), 187 states have call successors, (237) [2022-07-22 20:53:19,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2406 transitions. [2022-07-22 20:53:19,257 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2406 transitions. Word has length 91 [2022-07-22 20:53:19,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:19,258 INFO L495 AbstractCegarLoop]: Abstraction has 1838 states and 2406 transitions. [2022-07-22 20:53:19,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:53:19,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2406 transitions. [2022-07-22 20:53:19,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 20:53:19,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:19,259 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:19,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 20:53:19,259 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:19,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1143882069, now seen corresponding path program 1 times [2022-07-22 20:53:19,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:19,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667348459] [2022-07-22 20:53:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:19,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:19,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:19,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:53:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:19,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:53:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:19,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:53:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:53:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:19,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:53:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:19,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:53:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 20:53:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:53:19,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:19,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667348459] [2022-07-22 20:53:19,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667348459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:19,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:19,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:53:19,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777576288] [2022-07-22 20:53:19,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:19,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:53:19,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:19,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:53:19,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:53:19,339 INFO L87 Difference]: Start difference. First operand 1838 states and 2406 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) [2022-07-22 20:53:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:20,437 INFO L93 Difference]: Finished difference Result 4256 states and 5489 transitions. [2022-07-22 20:53:20,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 20:53:20,438 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-07-22 20:53:20,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:20,445 INFO L225 Difference]: With dead ends: 4256 [2022-07-22 20:53:20,445 INFO L226 Difference]: Without dead ends: 2636 [2022-07-22 20:53:20,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-22 20:53:20,447 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 2441 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2483 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:20,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2483 Valid, 2598 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:53:20,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2022-07-22 20:53:20,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2459. [2022-07-22 20:53:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 1959 states have (on average 1.2863705972434916) internal successors, (2520), 1988 states have internal predecessors, (2520), 268 states have call successors, (268), 169 states have call predecessors, (268), 230 states have return successors, (368), 303 states have call predecessors, (368), 264 states have call successors, (368) [2022-07-22 20:53:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3156 transitions. [2022-07-22 20:53:20,517 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3156 transitions. Word has length 92 [2022-07-22 20:53:20,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:20,517 INFO L495 AbstractCegarLoop]: Abstraction has 2459 states and 3156 transitions. [2022-07-22 20:53:20,517 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) [2022-07-22 20:53:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3156 transitions. [2022-07-22 20:53:20,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 20:53:20,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:20,519 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:20,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 20:53:20,519 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:20,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:20,520 INFO L85 PathProgramCache]: Analyzing trace with hash -729006388, now seen corresponding path program 1 times [2022-07-22 20:53:20,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:20,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756003429] [2022-07-22 20:53:20,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:20,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:53:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:53:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:53:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:53:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:53:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:53:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 20:53:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 20:53:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 20:53:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:53:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:53:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:53:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 20:53:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:53:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:53:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 20:53:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-22 20:53:20,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:20,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756003429] [2022-07-22 20:53:20,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756003429] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:53:20,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825372709] [2022-07-22 20:53:20,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:20,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:53:20,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:53:20,606 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) [2022-07-22 20:53:20,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 20:53:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:53:20,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:53:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 20:53:20,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:53:20,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825372709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:20,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:53:20,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-22 20:53:20,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123208033] [2022-07-22 20:53:20,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:20,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:53:20,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:20,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:53:20,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:53:20,836 INFO L87 Difference]: Start difference. First operand 2459 states and 3156 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 20:53:20,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:20,930 INFO L93 Difference]: Finished difference Result 6385 states and 7985 transitions. [2022-07-22 20:53:20,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:53:20,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2022-07-22 20:53:20,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:20,941 INFO L225 Difference]: With dead ends: 6385 [2022-07-22 20:53:20,942 INFO L226 Difference]: Without dead ends: 4371 [2022-07-22 20:53:20,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:53:20,947 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 61 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:20,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1413 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:53:20,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2022-07-22 20:53:21,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 4329. [2022-07-22 20:53:21,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4329 states, 3416 states have (on average 1.2511709601873535) internal successors, (4274), 3468 states have internal predecessors, (4274), 475 states have call successors, (475), 330 states have call predecessors, (475), 436 states have return successors, (636), 532 states have call predecessors, (636), 471 states have call successors, (636) [2022-07-22 20:53:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4329 states to 4329 states and 5385 transitions. [2022-07-22 20:53:21,123 INFO L78 Accepts]: Start accepts. Automaton has 4329 states and 5385 transitions. Word has length 163 [2022-07-22 20:53:21,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:21,123 INFO L495 AbstractCegarLoop]: Abstraction has 4329 states and 5385 transitions. [2022-07-22 20:53:21,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 20:53:21,124 INFO L276 IsEmpty]: Start isEmpty. Operand 4329 states and 5385 transitions. [2022-07-22 20:53:21,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:53:21,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:21,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:21,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 20:53:21,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 20:53:21,347 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:21,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:21,347 INFO L85 PathProgramCache]: Analyzing trace with hash -175523429, now seen corresponding path program 1 times [2022-07-22 20:53:21,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:21,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644867496] [2022-07-22 20:53:21,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:21,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:21,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:21,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:53:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:21,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:21,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:53:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:21,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:53:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:21,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:21,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644867496] [2022-07-22 20:53:21,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644867496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:21,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:21,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:53:21,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857730614] [2022-07-22 20:53:21,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:21,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:53:21,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:21,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:53:21,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:53:21,476 INFO L87 Difference]: Start difference. First operand 4329 states and 5385 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:22,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:22,786 INFO L93 Difference]: Finished difference Result 4807 states and 6157 transitions. [2022-07-22 20:53:22,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:53:22,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:53:22,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:22,798 INFO L225 Difference]: With dead ends: 4807 [2022-07-22 20:53:22,798 INFO L226 Difference]: Without dead ends: 4460 [2022-07-22 20:53:22,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:53:22,800 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 1073 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:22,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 1340 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:53:22,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4460 states. [2022-07-22 20:53:23,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4460 to 4329. [2022-07-22 20:53:23,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4329 states, 3416 states have (on average 1.2508782201405153) internal successors, (4273), 3468 states have internal predecessors, (4273), 475 states have call successors, (475), 330 states have call predecessors, (475), 436 states have return successors, (636), 532 states have call predecessors, (636), 471 states have call successors, (636) [2022-07-22 20:53:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4329 states to 4329 states and 5384 transitions. [2022-07-22 20:53:23,018 INFO L78 Accepts]: Start accepts. Automaton has 4329 states and 5384 transitions. Word has length 168 [2022-07-22 20:53:23,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:23,018 INFO L495 AbstractCegarLoop]: Abstraction has 4329 states and 5384 transitions. [2022-07-22 20:53:23,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:23,018 INFO L276 IsEmpty]: Start isEmpty. Operand 4329 states and 5384 transitions. [2022-07-22 20:53:23,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:53:23,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:23,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:23,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 20:53:23,020 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:23,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:23,021 INFO L85 PathProgramCache]: Analyzing trace with hash 435745629, now seen corresponding path program 1 times [2022-07-22 20:53:23,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:23,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503018611] [2022-07-22 20:53:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:23,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:23,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:53:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:23,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:23,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:53:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:23,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:53:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:23,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:23,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:23,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503018611] [2022-07-22 20:53:23,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503018611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:23,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:23,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:53:23,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745851931] [2022-07-22 20:53:23,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:23,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:53:23,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:23,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:53:23,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:53:23,124 INFO L87 Difference]: Start difference. First operand 4329 states and 5384 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:25,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:25,442 INFO L93 Difference]: Finished difference Result 5287 states and 6935 transitions. [2022-07-22 20:53:25,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:53:25,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:53:25,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:25,460 INFO L225 Difference]: With dead ends: 5287 [2022-07-22 20:53:25,460 INFO L226 Difference]: Without dead ends: 4947 [2022-07-22 20:53:25,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:53:25,462 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 1692 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1722 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:25,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1722 Valid, 1900 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 20:53:25,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4947 states. [2022-07-22 20:53:25,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4947 to 4684. [2022-07-22 20:53:25,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4684 states, 3744 states have (on average 1.2815170940170941) internal successors, (4798), 3797 states have internal predecessors, (4798), 495 states have call successors, (495), 336 states have call predecessors, (495), 443 states have return successors, (659), 552 states have call predecessors, (659), 491 states have call successors, (659) [2022-07-22 20:53:25,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4684 states to 4684 states and 5952 transitions. [2022-07-22 20:53:25,697 INFO L78 Accepts]: Start accepts. Automaton has 4684 states and 5952 transitions. Word has length 168 [2022-07-22 20:53:25,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:25,697 INFO L495 AbstractCegarLoop]: Abstraction has 4684 states and 5952 transitions. [2022-07-22 20:53:25,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:25,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4684 states and 5952 transitions. [2022-07-22 20:53:25,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:53:25,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:25,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:25,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 20:53:25,699 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:25,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:25,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1358146137, now seen corresponding path program 1 times [2022-07-22 20:53:25,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:25,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639996475] [2022-07-22 20:53:25,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:25,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:25,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:25,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:53:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:25,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:25,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:53:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:25,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:53:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:25,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:25,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639996475] [2022-07-22 20:53:25,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639996475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:25,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:25,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:25,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098770696] [2022-07-22 20:53:25,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:25,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:25,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:25,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:25,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:25,811 INFO L87 Difference]: Start difference. First operand 4684 states and 5952 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:28,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:28,603 INFO L93 Difference]: Finished difference Result 6145 states and 8320 transitions. [2022-07-22 20:53:28,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:53:28,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:53:28,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:28,614 INFO L225 Difference]: With dead ends: 6145 [2022-07-22 20:53:28,614 INFO L226 Difference]: Without dead ends: 5450 [2022-07-22 20:53:28,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:53:28,616 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 1720 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 3243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:28,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 3157 Invalid, 3243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 3121 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 20:53:28,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5450 states. [2022-07-22 20:53:28,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5450 to 5014. [2022-07-22 20:53:28,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 4047 states have (on average 1.302940449715839) internal successors, (5273), 4101 states have internal predecessors, (5273), 515 states have call successors, (515), 342 states have call predecessors, (515), 450 states have return successors, (681), 573 states have call predecessors, (681), 511 states have call successors, (681) [2022-07-22 20:53:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 6469 transitions. [2022-07-22 20:53:28,853 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 6469 transitions. Word has length 168 [2022-07-22 20:53:28,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:28,853 INFO L495 AbstractCegarLoop]: Abstraction has 5014 states and 6469 transitions. [2022-07-22 20:53:28,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:28,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 6469 transitions. [2022-07-22 20:53:28,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:53:28,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:28,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:28,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 20:53:28,855 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:28,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:28,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1039841701, now seen corresponding path program 1 times [2022-07-22 20:53:28,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:28,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289241512] [2022-07-22 20:53:28,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:28,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:28,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:28,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:53:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:28,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:28,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:53:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:28,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:53:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:28,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:28,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289241512] [2022-07-22 20:53:28,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289241512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:28,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:28,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:28,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395450676] [2022-07-22 20:53:28,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:28,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:28,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:28,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:28,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:28,960 INFO L87 Difference]: Start difference. First operand 5014 states and 6469 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:30,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:30,453 INFO L93 Difference]: Finished difference Result 6489 states and 8873 transitions. [2022-07-22 20:53:30,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:53:30,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:53:30,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:30,466 INFO L225 Difference]: With dead ends: 6489 [2022-07-22 20:53:30,467 INFO L226 Difference]: Without dead ends: 5464 [2022-07-22 20:53:30,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:53:30,471 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 1371 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:30,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1402 Valid, 1840 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:53:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2022-07-22 20:53:30,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 5014. [2022-07-22 20:53:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 4047 states have (on average 1.3021991598715097) internal successors, (5270), 4101 states have internal predecessors, (5270), 515 states have call successors, (515), 342 states have call predecessors, (515), 450 states have return successors, (681), 573 states have call predecessors, (681), 511 states have call successors, (681) [2022-07-22 20:53:30,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 6466 transitions. [2022-07-22 20:53:30,719 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 6466 transitions. Word has length 168 [2022-07-22 20:53:30,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:30,720 INFO L495 AbstractCegarLoop]: Abstraction has 5014 states and 6466 transitions. [2022-07-22 20:53:30,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:30,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 6466 transitions. [2022-07-22 20:53:30,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:53:30,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:30,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:30,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 20:53:30,722 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:30,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:30,723 INFO L85 PathProgramCache]: Analyzing trace with hash -613287203, now seen corresponding path program 1 times [2022-07-22 20:53:30,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:30,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646912085] [2022-07-22 20:53:30,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:30,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:30,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:30,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:53:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:30,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:30,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:53:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:30,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:53:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:30,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:30,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646912085] [2022-07-22 20:53:30,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646912085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:30,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:30,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:30,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662578025] [2022-07-22 20:53:30,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:30,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:30,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:30,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:30,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:30,841 INFO L87 Difference]: Start difference. First operand 5014 states and 6466 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:32,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:32,254 INFO L93 Difference]: Finished difference Result 6485 states and 8856 transitions. [2022-07-22 20:53:32,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:53:32,254 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:53:32,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:32,266 INFO L225 Difference]: With dead ends: 6485 [2022-07-22 20:53:32,266 INFO L226 Difference]: Without dead ends: 5460 [2022-07-22 20:53:32,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:53:32,270 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 1497 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:32,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1628 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:53:32,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2022-07-22 20:53:32,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 5014. [2022-07-22 20:53:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 4047 states have (on average 1.3014578700271806) internal successors, (5267), 4101 states have internal predecessors, (5267), 515 states have call successors, (515), 342 states have call predecessors, (515), 450 states have return successors, (681), 573 states have call predecessors, (681), 511 states have call successors, (681) [2022-07-22 20:53:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 6463 transitions. [2022-07-22 20:53:32,543 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 6463 transitions. Word has length 168 [2022-07-22 20:53:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:32,544 INFO L495 AbstractCegarLoop]: Abstraction has 5014 states and 6463 transitions. [2022-07-22 20:53:32,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 6463 transitions. [2022-07-22 20:53:32,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:53:32,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:32,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:32,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 20:53:32,547 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:32,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:32,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1153716709, now seen corresponding path program 1 times [2022-07-22 20:53:32,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:32,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713839006] [2022-07-22 20:53:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:32,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:32,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:32,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:53:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:32,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:32,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:53:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:32,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:53:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:32,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:32,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:32,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713839006] [2022-07-22 20:53:32,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713839006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:32,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:32,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:32,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016578250] [2022-07-22 20:53:32,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:32,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:32,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:32,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:32,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:32,654 INFO L87 Difference]: Start difference. First operand 5014 states and 6463 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:35,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:35,411 INFO L93 Difference]: Finished difference Result 7401 states and 10301 transitions. [2022-07-22 20:53:35,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:53:35,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:53:35,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:35,427 INFO L225 Difference]: With dead ends: 7401 [2022-07-22 20:53:35,427 INFO L226 Difference]: Without dead ends: 6376 [2022-07-22 20:53:35,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:53:35,432 INFO L413 NwaCegarLoop]: 1066 mSDtfsCounter, 1700 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 3196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:35,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 3133 Invalid, 3196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 20:53:35,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6376 states. [2022-07-22 20:53:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6376 to 5684. [2022-07-22 20:53:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5684 states, 4663 states have (on average 1.3356208449496032) internal successors, (6228), 4719 states have internal predecessors, (6228), 555 states have call successors, (555), 354 states have call predecessors, (555), 464 states have return successors, (729), 615 states have call predecessors, (729), 551 states have call successors, (729) [2022-07-22 20:53:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 7512 transitions. [2022-07-22 20:53:35,709 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 7512 transitions. Word has length 168 [2022-07-22 20:53:35,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:35,709 INFO L495 AbstractCegarLoop]: Abstraction has 5684 states and 7512 transitions. [2022-07-22 20:53:35,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:35,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 7512 transitions. [2022-07-22 20:53:35,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:53:35,712 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:35,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:35,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 20:53:35,713 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:35,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:35,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1309697251, now seen corresponding path program 1 times [2022-07-22 20:53:35,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:35,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818193725] [2022-07-22 20:53:35,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:35,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:35,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:35,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:53:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:35,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:35,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:53:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:35,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:53:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:35,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:35,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818193725] [2022-07-22 20:53:35,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818193725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:35,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:35,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:35,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127323542] [2022-07-22 20:53:35,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:35,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:35,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:35,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:35,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:35,806 INFO L87 Difference]: Start difference. First operand 5684 states and 7512 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:37,239 INFO L93 Difference]: Finished difference Result 8057 states and 11337 transitions. [2022-07-22 20:53:37,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:53:37,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:53:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:37,252 INFO L225 Difference]: With dead ends: 8057 [2022-07-22 20:53:37,253 INFO L226 Difference]: Without dead ends: 6362 [2022-07-22 20:53:37,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:53:37,259 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 1496 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:37,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 1621 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:53:37,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6362 states. [2022-07-22 20:53:37,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6362 to 5684. [2022-07-22 20:53:37,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5684 states, 4663 states have (on average 1.3345485738794767) internal successors, (6223), 4719 states have internal predecessors, (6223), 555 states have call successors, (555), 354 states have call predecessors, (555), 464 states have return successors, (729), 615 states have call predecessors, (729), 551 states have call successors, (729) [2022-07-22 20:53:37,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 7507 transitions. [2022-07-22 20:53:37,560 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 7507 transitions. Word has length 168 [2022-07-22 20:53:37,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:37,561 INFO L495 AbstractCegarLoop]: Abstraction has 5684 states and 7507 transitions. [2022-07-22 20:53:37,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:37,561 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 7507 transitions. [2022-07-22 20:53:37,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:53:37,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:37,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:37,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 20:53:37,563 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:37,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:37,564 INFO L85 PathProgramCache]: Analyzing trace with hash -899086885, now seen corresponding path program 1 times [2022-07-22 20:53:37,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:37,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421244031] [2022-07-22 20:53:37,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:37,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:37,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:37,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:53:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:37,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:37,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:53:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:37,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:53:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:37,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:37,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:37,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421244031] [2022-07-22 20:53:37,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421244031] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:37,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:37,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:37,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179163678] [2022-07-22 20:53:37,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:37,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:37,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:37,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:37,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:37,665 INFO L87 Difference]: Start difference. First operand 5684 states and 7507 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:40,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:40,469 INFO L93 Difference]: Finished difference Result 9835 states and 14126 transitions. [2022-07-22 20:53:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:53:40,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:53:40,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:40,488 INFO L225 Difference]: With dead ends: 9835 [2022-07-22 20:53:40,489 INFO L226 Difference]: Without dead ends: 8140 [2022-07-22 20:53:40,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:53:40,495 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 1692 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 3045 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1722 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 3169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 3045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:40,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1722 Valid, 3122 Invalid, 3169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 3045 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 20:53:40,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8140 states. [2022-07-22 20:53:40,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8140 to 7026. [2022-07-22 20:53:40,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7026 states, 5897 states have (on average 1.380193318636595) internal successors, (8139), 5957 states have internal predecessors, (8139), 635 states have call successors, (635), 378 states have call predecessors, (635), 492 states have return successors, (831), 699 states have call predecessors, (831), 631 states have call successors, (831) [2022-07-22 20:53:40,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7026 states to 7026 states and 9605 transitions. [2022-07-22 20:53:40,918 INFO L78 Accepts]: Start accepts. Automaton has 7026 states and 9605 transitions. Word has length 168 [2022-07-22 20:53:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:40,919 INFO L495 AbstractCegarLoop]: Abstraction has 7026 states and 9605 transitions. [2022-07-22 20:53:40,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:40,919 INFO L276 IsEmpty]: Start isEmpty. Operand 7026 states and 9605 transitions. [2022-07-22 20:53:40,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:53:40,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:40,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:40,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 20:53:40,926 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:40,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:40,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1608010589, now seen corresponding path program 1 times [2022-07-22 20:53:40,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:40,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268543069] [2022-07-22 20:53:40,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:40,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:40,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:40,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:53:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:41,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:41,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:53:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:41,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:53:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:41,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:41,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268543069] [2022-07-22 20:53:41,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268543069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:41,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:41,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:41,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356293806] [2022-07-22 20:53:41,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:41,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:41,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:41,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:41,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:41,028 INFO L87 Difference]: Start difference. First operand 7026 states and 9605 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:42,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:42,761 INFO L93 Difference]: Finished difference Result 11193 states and 16284 transitions. [2022-07-22 20:53:42,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:53:42,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:53:42,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:42,780 INFO L225 Difference]: With dead ends: 11193 [2022-07-22 20:53:42,780 INFO L226 Difference]: Without dead ends: 8156 [2022-07-22 20:53:42,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:53:42,788 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 1285 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:42,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 1864 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:53:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8156 states. [2022-07-22 20:53:43,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8156 to 7026. [2022-07-22 20:53:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7026 states, 5897 states have (on average 1.3786671188740038) internal successors, (8130), 5957 states have internal predecessors, (8130), 635 states have call successors, (635), 378 states have call predecessors, (635), 492 states have return successors, (831), 699 states have call predecessors, (831), 631 states have call successors, (831) [2022-07-22 20:53:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7026 states to 7026 states and 9596 transitions. [2022-07-22 20:53:43,197 INFO L78 Accepts]: Start accepts. Automaton has 7026 states and 9596 transitions. Word has length 168 [2022-07-22 20:53:43,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:43,197 INFO L495 AbstractCegarLoop]: Abstraction has 7026 states and 9596 transitions. [2022-07-22 20:53:43,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:43,198 INFO L276 IsEmpty]: Start isEmpty. Operand 7026 states and 9596 transitions. [2022-07-22 20:53:43,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:53:43,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:43,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:43,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 20:53:43,200 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:43,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:43,200 INFO L85 PathProgramCache]: Analyzing trace with hash -527872613, now seen corresponding path program 1 times [2022-07-22 20:53:43,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:43,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420510612] [2022-07-22 20:53:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:43,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:43,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:43,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:53:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:43,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:53:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:53:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:43,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:43,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420510612] [2022-07-22 20:53:43,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420510612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:43,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:43,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:43,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23835377] [2022-07-22 20:53:43,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:43,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:43,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:43,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:43,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:43,290 INFO L87 Difference]: Start difference. First operand 7026 states and 9596 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:46,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:46,436 INFO L93 Difference]: Finished difference Result 14701 states and 21770 transitions. [2022-07-22 20:53:46,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:53:46,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:53:46,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:46,458 INFO L225 Difference]: With dead ends: 14701 [2022-07-22 20:53:46,458 INFO L226 Difference]: Without dead ends: 11664 [2022-07-22 20:53:46,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:53:46,467 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 1687 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 3015 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 3142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:46,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 3109 Invalid, 3142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3015 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 20:53:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11664 states. [2022-07-22 20:53:47,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11664 to 9724. [2022-07-22 20:53:47,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9724 states, 8379 states have (on average 1.4285714285714286) internal successors, (11970), 8447 states have internal predecessors, (11970), 795 states have call successors, (795), 426 states have call predecessors, (795), 548 states have return successors, (1053), 867 states have call predecessors, (1053), 791 states have call successors, (1053) [2022-07-22 20:53:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9724 states to 9724 states and 13818 transitions. [2022-07-22 20:53:47,060 INFO L78 Accepts]: Start accepts. Automaton has 9724 states and 13818 transitions. Word has length 168 [2022-07-22 20:53:47,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:47,060 INFO L495 AbstractCegarLoop]: Abstraction has 9724 states and 13818 transitions. [2022-07-22 20:53:47,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:47,060 INFO L276 IsEmpty]: Start isEmpty. Operand 9724 states and 13818 transitions. [2022-07-22 20:53:47,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:53:47,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:47,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:47,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 20:53:47,064 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:47,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:47,064 INFO L85 PathProgramCache]: Analyzing trace with hash -458224739, now seen corresponding path program 1 times [2022-07-22 20:53:47,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:47,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196016151] [2022-07-22 20:53:47,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:47,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:47,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:47,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:53:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:47,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:47,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:53:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:47,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:53:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:47,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:47,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196016151] [2022-07-22 20:53:47,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196016151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:47,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:47,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:47,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534997806] [2022-07-22 20:53:47,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:47,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:47,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:47,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:47,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:47,150 INFO L87 Difference]: Start difference. First operand 9724 states and 13818 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:48,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:48,997 INFO L93 Difference]: Finished difference Result 17447 states and 26159 transitions. [2022-07-22 20:53:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:53:48,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:53:48,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:49,021 INFO L225 Difference]: With dead ends: 17447 [2022-07-22 20:53:49,021 INFO L226 Difference]: Without dead ends: 11712 [2022-07-22 20:53:49,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:53:49,034 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1545 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:49,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 1577 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:53:49,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11712 states. [2022-07-22 20:53:49,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11712 to 9724. [2022-07-22 20:53:49,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9724 states, 8379 states have (on average 1.4265425468432986) internal successors, (11953), 8447 states have internal predecessors, (11953), 795 states have call successors, (795), 426 states have call predecessors, (795), 548 states have return successors, (1053), 867 states have call predecessors, (1053), 791 states have call successors, (1053) [2022-07-22 20:53:49,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9724 states to 9724 states and 13801 transitions. [2022-07-22 20:53:49,660 INFO L78 Accepts]: Start accepts. Automaton has 9724 states and 13801 transitions. Word has length 168 [2022-07-22 20:53:49,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:49,660 INFO L495 AbstractCegarLoop]: Abstraction has 9724 states and 13801 transitions. [2022-07-22 20:53:49,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:49,661 INFO L276 IsEmpty]: Start isEmpty. Operand 9724 states and 13801 transitions. [2022-07-22 20:53:49,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:53:49,664 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:49,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:49,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 20:53:49,665 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:49,665 INFO L85 PathProgramCache]: Analyzing trace with hash 940728863, now seen corresponding path program 1 times [2022-07-22 20:53:49,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:49,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405359525] [2022-07-22 20:53:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:49,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:49,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:49,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:53:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:49,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:49,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:53:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:49,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:53:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:49,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:49,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405359525] [2022-07-22 20:53:49,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405359525] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:49,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:49,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:49,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804976726] [2022-07-22 20:53:49,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:49,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:49,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:49,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:49,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:49,745 INFO L87 Difference]: Start difference. First operand 9724 states and 13801 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:51,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:51,900 INFO L93 Difference]: Finished difference Result 17429 states and 26072 transitions. [2022-07-22 20:53:51,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:53:51,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:53:51,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:51,925 INFO L225 Difference]: With dead ends: 17429 [2022-07-22 20:53:51,926 INFO L226 Difference]: Without dead ends: 11694 [2022-07-22 20:53:51,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:53:51,938 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1281 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:51,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 1847 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:53:51,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11694 states. [2022-07-22 20:53:52,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11694 to 9724. [2022-07-22 20:53:52,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9724 states, 8379 states have (on average 1.4245136651151689) internal successors, (11936), 8447 states have internal predecessors, (11936), 795 states have call successors, (795), 426 states have call predecessors, (795), 548 states have return successors, (1053), 867 states have call predecessors, (1053), 791 states have call successors, (1053) [2022-07-22 20:53:52,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9724 states to 9724 states and 13784 transitions. [2022-07-22 20:53:52,598 INFO L78 Accepts]: Start accepts. Automaton has 9724 states and 13784 transitions. Word has length 168 [2022-07-22 20:53:52,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:52,598 INFO L495 AbstractCegarLoop]: Abstraction has 9724 states and 13784 transitions. [2022-07-22 20:53:52,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:52,598 INFO L276 IsEmpty]: Start isEmpty. Operand 9724 states and 13784 transitions. [2022-07-22 20:53:52,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:53:52,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:52,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:52,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 20:53:52,602 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:52,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:52,602 INFO L85 PathProgramCache]: Analyzing trace with hash -676711587, now seen corresponding path program 1 times [2022-07-22 20:53:52,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:52,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871533403] [2022-07-22 20:53:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:52,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:52,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:52,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:53:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:52,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:52,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:53:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:52,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:53:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:52,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:52,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:52,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871533403] [2022-07-22 20:53:52,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871533403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:52,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:52,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:52,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219800786] [2022-07-22 20:53:52,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:52,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:52,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:52,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:52,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:52,687 INFO L87 Difference]: Start difference. First operand 9724 states and 13784 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:57,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:57,338 INFO L93 Difference]: Finished difference Result 26815 states and 40652 transitions. [2022-07-22 20:53:57,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:53:57,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:53:57,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:57,385 INFO L225 Difference]: With dead ends: 26815 [2022-07-22 20:53:57,385 INFO L226 Difference]: Without dead ends: 21080 [2022-07-22 20:53:57,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:53:57,401 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 2075 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 2951 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2117 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 3083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:57,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2117 Valid, 3074 Invalid, 3083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2951 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 20:53:57,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21080 states. [2022-07-22 20:53:58,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21080 to 14976. [2022-07-22 20:53:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14976 states, 13215 states have (on average 1.4643965191070754) internal successors, (19352), 13299 states have internal predecessors, (19352), 1099 states have call successors, (1099), 522 states have call predecessors, (1099), 660 states have return successors, (1535), 1187 states have call predecessors, (1535), 1095 states have call successors, (1535) [2022-07-22 20:53:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14976 states to 14976 states and 21986 transitions. [2022-07-22 20:53:58,575 INFO L78 Accepts]: Start accepts. Automaton has 14976 states and 21986 transitions. Word has length 168 [2022-07-22 20:53:58,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:58,575 INFO L495 AbstractCegarLoop]: Abstraction has 14976 states and 21986 transitions. [2022-07-22 20:53:58,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:58,576 INFO L276 IsEmpty]: Start isEmpty. Operand 14976 states and 21986 transitions. [2022-07-22 20:53:58,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:53:58,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:58,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:58,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 20:53:58,581 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:58,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:58,581 INFO L85 PathProgramCache]: Analyzing trace with hash -313245089, now seen corresponding path program 1 times [2022-07-22 20:53:58,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:58,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247857302] [2022-07-22 20:53:58,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:58,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:53:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:53:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:53:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:58,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:58,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247857302] [2022-07-22 20:53:58,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247857302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:58,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:58,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:58,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956166902] [2022-07-22 20:53:58,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:58,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:58,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:58,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:58,666 INFO L87 Difference]: Start difference. First operand 14976 states and 21986 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:05,574 INFO L93 Difference]: Finished difference Result 47697 states and 73512 transitions. [2022-07-22 20:54:05,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:54:05,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:54:05,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:05,677 INFO L225 Difference]: With dead ends: 47697 [2022-07-22 20:54:05,677 INFO L226 Difference]: Without dead ends: 36710 [2022-07-22 20:54:05,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:54:05,705 INFO L413 NwaCegarLoop]: 1170 mSDtfsCounter, 1760 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 3413 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 3229 SdHoareTripleChecker+Invalid, 3542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:05,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 3229 Invalid, 3542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3413 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 20:54:05,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36710 states. [2022-07-22 20:54:07,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36710 to 25617. [2022-07-22 20:54:07,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25617 states, 23040 states have (on average 1.496267361111111) internal successors, (34474), 23156 states have internal predecessors, (34474), 1691 states have call successors, (1691), 714 states have call predecessors, (1691), 884 states have return successors, (2645), 1811 states have call predecessors, (2645), 1687 states have call successors, (2645) [2022-07-22 20:54:07,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25617 states to 25617 states and 38810 transitions. [2022-07-22 20:54:07,840 INFO L78 Accepts]: Start accepts. Automaton has 25617 states and 38810 transitions. Word has length 168 [2022-07-22 20:54:07,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:07,840 INFO L495 AbstractCegarLoop]: Abstraction has 25617 states and 38810 transitions. [2022-07-22 20:54:07,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:07,840 INFO L276 IsEmpty]: Start isEmpty. Operand 25617 states and 38810 transitions. [2022-07-22 20:54:07,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:54:07,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:07,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:07,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 20:54:07,849 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:07,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:07,849 INFO L85 PathProgramCache]: Analyzing trace with hash -24425699, now seen corresponding path program 1 times [2022-07-22 20:54:07,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:07,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512621588] [2022-07-22 20:54:07,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:07,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:54:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:54:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:54:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:54:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:07,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:07,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512621588] [2022-07-22 20:54:07,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512621588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:07,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:07,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:07,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636817450] [2022-07-22 20:54:07,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:07,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:07,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:07,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:07,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:07,946 INFO L87 Difference]: Start difference. First operand 25617 states and 38810 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:18,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:18,897 INFO L93 Difference]: Finished difference Result 89312 states and 139758 transitions. [2022-07-22 20:54:18,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:54:18,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:54:18,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:19,059 INFO L225 Difference]: With dead ends: 89312 [2022-07-22 20:54:19,059 INFO L226 Difference]: Without dead ends: 67684 [2022-07-22 20:54:19,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:54:19,107 INFO L413 NwaCegarLoop]: 1009 mSDtfsCounter, 1996 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 2936 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 3068 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:19,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2038 Valid, 3068 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2936 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 20:54:19,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67684 states. [2022-07-22 20:54:23,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67684 to 46866. [2022-07-22 20:54:23,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46866 states, 42689 states have (on average 1.5167373328023612) internal successors, (64748), 42869 states have internal predecessors, (64748), 2843 states have call successors, (2843), 1098 states have call predecessors, (2843), 1332 states have return successors, (5319), 3027 states have call predecessors, (5319), 2839 states have call successors, (5319) [2022-07-22 20:54:23,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46866 states to 46866 states and 72910 transitions. [2022-07-22 20:54:23,406 INFO L78 Accepts]: Start accepts. Automaton has 46866 states and 72910 transitions. Word has length 168 [2022-07-22 20:54:23,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:23,406 INFO L495 AbstractCegarLoop]: Abstraction has 46866 states and 72910 transitions. [2022-07-22 20:54:23,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:23,407 INFO L276 IsEmpty]: Start isEmpty. Operand 46866 states and 72910 transitions. [2022-07-22 20:54:23,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:54:23,422 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:23,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:23,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 20:54:23,423 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:23,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:23,423 INFO L85 PathProgramCache]: Analyzing trace with hash -569298273, now seen corresponding path program 1 times [2022-07-22 20:54:23,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:23,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920445964] [2022-07-22 20:54:23,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:23,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:23,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:23,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:54:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:54:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:54:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:23,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:54:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:23,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:23,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920445964] [2022-07-22 20:54:23,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920445964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:23,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:23,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:23,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556104193] [2022-07-22 20:54:23,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:23,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:23,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:23,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:23,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:23,515 INFO L87 Difference]: Start difference. First operand 46866 states and 72910 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:42,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:42,980 INFO L93 Difference]: Finished difference Result 171359 states and 272308 transitions. [2022-07-22 20:54:42,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:54:42,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:54:42,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:43,464 INFO L225 Difference]: With dead ends: 171359 [2022-07-22 20:54:43,465 INFO L226 Difference]: Without dead ends: 128482 [2022-07-22 20:54:43,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:54:43,555 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 1956 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 2928 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 3063 SdHoareTripleChecker+Invalid, 3060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:43,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1998 Valid, 3063 Invalid, 3060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2928 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 20:54:43,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128482 states. [2022-07-22 20:54:52,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128482 to 89299. [2022-07-22 20:54:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89299 states, 81986 states have (on average 1.5290171492693874) internal successors, (125358), 82294 states have internal predecessors, (125358), 5083 states have call successors, (5083), 1866 states have call predecessors, (5083), 2228 states have return successors, (12061), 5395 states have call predecessors, (12061), 5079 states have call successors, (12061) [2022-07-22 20:54:52,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89299 states to 89299 states and 142502 transitions. [2022-07-22 20:54:52,506 INFO L78 Accepts]: Start accepts. Automaton has 89299 states and 142502 transitions. Word has length 168 [2022-07-22 20:54:52,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:52,506 INFO L495 AbstractCegarLoop]: Abstraction has 89299 states and 142502 transitions. [2022-07-22 20:54:52,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:52,506 INFO L276 IsEmpty]: Start isEmpty. Operand 89299 states and 142502 transitions. [2022-07-22 20:54:52,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:54:52,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:52,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:52,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 20:54:52,535 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:52,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:52,536 INFO L85 PathProgramCache]: Analyzing trace with hash 105861853, now seen corresponding path program 1 times [2022-07-22 20:54:52,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:52,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433817343] [2022-07-22 20:54:52,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:52,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:52,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:52,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:54:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:52,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:54:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:52,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:54:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:52,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:54:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:52,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:52,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:52,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433817343] [2022-07-22 20:54:52,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433817343] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:52,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:52,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:52,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238489694] [2022-07-22 20:54:52,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:52,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:52,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:52,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:52,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:52,651 INFO L87 Difference]: Start difference. First operand 89299 states and 142502 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:55:30,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:55:30,496 INFO L93 Difference]: Finished difference Result 333086 states and 539466 transitions. [2022-07-22 20:55:30,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:55:30,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 20:55:30,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:55:31,414 INFO L225 Difference]: With dead ends: 333086 [2022-07-22 20:55:31,414 INFO L226 Difference]: Without dead ends: 247776 [2022-07-22 20:55:31,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:55:31,623 INFO L413 NwaCegarLoop]: 1105 mSDtfsCounter, 1730 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 3281 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 3413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 3281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:55:31,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1759 Valid, 3164 Invalid, 3413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 3281 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 20:55:31,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247776 states. [2022-07-22 20:55:49,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247776 to 174036. [2022-07-22 20:55:49,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174036 states, 160579 states have (on average 1.5363403682922425) internal successors, (246704), 161143 states have internal predecessors, (246704), 9435 states have call successors, (9435), 3402 states have call predecessors, (9435), 4020 states have return successors, (29791), 10003 states have call predecessors, (29791), 9431 states have call successors, (29791) [2022-07-22 20:55:50,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174036 states to 174036 states and 285930 transitions. [2022-07-22 20:55:50,096 INFO L78 Accepts]: Start accepts. Automaton has 174036 states and 285930 transitions. Word has length 168 [2022-07-22 20:55:50,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:55:50,097 INFO L495 AbstractCegarLoop]: Abstraction has 174036 states and 285930 transitions. [2022-07-22 20:55:50,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:55:50,097 INFO L276 IsEmpty]: Start isEmpty. Operand 174036 states and 285930 transitions. [2022-07-22 20:55:50,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 20:55:50,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:55:50,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:55:50,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 20:55:50,153 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:55:50,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:55:50,154 INFO L85 PathProgramCache]: Analyzing trace with hash -842190113, now seen corresponding path program 1 times [2022-07-22 20:55:50,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:55:50,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861650732] [2022-07-22 20:55:50,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:55:50,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:55:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:50,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:55:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:50,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:55:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:55:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:50,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:55:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:50,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:55:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:50,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:55:50,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:55:50,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861650732] [2022-07-22 20:55:50,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861650732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:55:50,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:55:50,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:55:50,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523854134] [2022-07-22 20:55:50,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:55:50,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:55:50,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:55:50,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:55:50,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:55:50,255 INFO L87 Difference]: Start difference. First operand 174036 states and 285930 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)