./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-2.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 030c097c5e5981a6b9166b6af780aa84c84c48bf3e4236dc73dc256776dad070 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:13:05,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:13:05,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:13:05,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:13:05,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:13:05,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:13:05,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:13:05,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:13:05,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:13:05,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:13:05,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:13:05,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:13:05,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:13:05,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:13:05,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:13:05,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:13:05,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:13:05,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:13:05,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:13:05,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:13:05,621 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:13:05,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:13:05,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:13:05,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:13:05,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:13:05,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:13:05,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:13:05,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:13:05,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:13:05,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:13:05,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:13:05,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:13:05,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:13:05,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:13:05,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:13:05,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:13:05,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:13:05,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:13:05,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:13:05,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:13:05,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:13:05,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:13:05,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:13:05,663 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:13:05,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:13:05,667 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:13:05,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:13:05,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:13:05,668 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:13:05,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:13:05,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:13:05,669 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:13:05,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:13:05,670 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:13:05,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:13:05,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:13:05,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:13:05,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:13:05,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:13:05,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:13:05,671 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:13:05,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:13:05,672 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:13:05,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:13:05,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:13:05,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:13:05,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:13:05,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:13:05,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:13:05,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:13:05,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:13:05,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:13:05,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:13:05,674 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:13:05,674 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:13:05,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:13:05,675 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 030c097c5e5981a6b9166b6af780aa84c84c48bf3e4236dc73dc256776dad070 [2022-07-13 21:13:05,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:13:05,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:13:05,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:13:05,930 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:13:05,931 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:13:05,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-2.c [2022-07-13 21:13:05,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e53c23998/b128ce7839994477a672910b8ea68f70/FLAGed657ffed [2022-07-13 21:13:06,454 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:13:06,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-2.c [2022-07-13 21:13:06,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e53c23998/b128ce7839994477a672910b8ea68f70/FLAGed657ffed [2022-07-13 21:13:06,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e53c23998/b128ce7839994477a672910b8ea68f70 [2022-07-13 21:13:06,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:13:06,822 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:13:06,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:13:06,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:13:06,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:13:06,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:13:06" (1/1) ... [2022-07-13 21:13:06,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e31b6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:06, skipping insertion in model container [2022-07-13 21:13:06,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:13:06" (1/1) ... [2022-07-13 21:13:06,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:13:06,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:13:07,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-2.c[914,927] [2022-07-13 21:13:07,054 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-2.c[7115,7128] [2022-07-13 21:13:07,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:13:07,177 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:13:07,189 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-2.c[914,927] [2022-07-13 21:13:07,221 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-2.c[7115,7128] [2022-07-13 21:13:07,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:13:07,274 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:13:07,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:07 WrapperNode [2022-07-13 21:13:07,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:13:07,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:13:07,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:13:07,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:13:07,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:07" (1/1) ... [2022-07-13 21:13:07,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:07" (1/1) ... [2022-07-13 21:13:07,364 INFO L137 Inliner]: procedures = 79, calls = 96, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 1098 [2022-07-13 21:13:07,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:13:07,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:13:07,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:13:07,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:13:07,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:07" (1/1) ... [2022-07-13 21:13:07,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:07" (1/1) ... [2022-07-13 21:13:07,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:07" (1/1) ... [2022-07-13 21:13:07,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:07" (1/1) ... [2022-07-13 21:13:07,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:07" (1/1) ... [2022-07-13 21:13:07,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:07" (1/1) ... [2022-07-13 21:13:07,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:07" (1/1) ... [2022-07-13 21:13:07,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:13:07,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:13:07,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:13:07,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:13:07,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:07" (1/1) ... [2022-07-13 21:13:07,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:13:07,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:13:07,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 21:13:07,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:13:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:13:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 21:13:07,529 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 21:13:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-13 21:13:07,530 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-13 21:13:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-13 21:13:07,530 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-13 21:13:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-13 21:13:07,530 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-13 21:13:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-13 21:13:07,530 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-13 21:13:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-13 21:13:07,530 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-13 21:13:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-13 21:13:07,530 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-13 21:13:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-13 21:13:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-13 21:13:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-13 21:13:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-13 21:13:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-13 21:13:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-13 21:13:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-13 21:13:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-13 21:13:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:13:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-13 21:13:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-13 21:13:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-13 21:13:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-13 21:13:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:13:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:13:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-13 21:13:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-13 21:13:07,675 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:13:07,677 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:13:08,435 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:13:08,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:13:08,452 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-13 21:13:08,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:13:08 BoogieIcfgContainer [2022-07-13 21:13:08,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:13:08,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:13:08,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:13:08,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:13:08,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:13:06" (1/3) ... [2022-07-13 21:13:08,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62071c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:13:08, skipping insertion in model container [2022-07-13 21:13:08,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:07" (2/3) ... [2022-07-13 21:13:08,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62071c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:13:08, skipping insertion in model container [2022-07-13 21:13:08,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:13:08" (3/3) ... [2022-07-13 21:13:08,463 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.13.cil-2.c [2022-07-13 21:13:08,483 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:13:08,483 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:13:08,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:13:08,562 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@4a293539, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1eca1200 [2022-07-13 21:13:08,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:13:08,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 508 states, 450 states have (on average 1.6444444444444444) internal successors, (740), 456 states have internal predecessors, (740), 41 states have call successors, (41), 14 states have call predecessors, (41), 14 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-13 21:13:08,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:13:08,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:08,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:08,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:08,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:08,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1788781248, now seen corresponding path program 1 times [2022-07-13 21:13:08,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:08,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903954954] [2022-07-13 21:13:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:08,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:08,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:08,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:08,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:08,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:08,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:08,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:08,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:09,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:09,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903954954] [2022-07-13 21:13:09,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903954954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:09,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:09,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:13:09,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453529577] [2022-07-13 21:13:09,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:09,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:13:09,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:09,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:13:09,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:13:09,046 INFO L87 Difference]: Start difference. First operand has 508 states, 450 states have (on average 1.6444444444444444) internal successors, (740), 456 states have internal predecessors, (740), 41 states have call successors, (41), 14 states have call predecessors, (41), 14 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:13:10,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:10,239 INFO L93 Difference]: Finished difference Result 1122 states and 1800 transitions. [2022-07-13 21:13:10,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:13:10,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-13 21:13:10,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:10,278 INFO L225 Difference]: With dead ends: 1122 [2022-07-13 21:13:10,278 INFO L226 Difference]: Without dead ends: 633 [2022-07-13 21:13:10,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:13:10,287 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 890 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2941 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:10,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 2941 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:13:10,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-07-13 21:13:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 594. [2022-07-13 21:13:10,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 518 states have (on average 1.5308880308880308) internal successors, (793), 524 states have internal predecessors, (793), 52 states have call successors, (52), 21 states have call predecessors, (52), 22 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2022-07-13 21:13:10,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 900 transitions. [2022-07-13 21:13:10,380 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 900 transitions. Word has length 65 [2022-07-13 21:13:10,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:10,380 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 900 transitions. [2022-07-13 21:13:10,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:13:10,381 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 900 transitions. [2022-07-13 21:13:10,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:13:10,385 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:10,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:10,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:13:10,386 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:10,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1384995297, now seen corresponding path program 1 times [2022-07-13 21:13:10,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:10,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951084501] [2022-07-13 21:13:10,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:10,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:10,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:10,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:10,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:10,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:10,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:10,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:10,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:10,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951084501] [2022-07-13 21:13:10,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951084501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:10,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:10,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:13:10,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915745199] [2022-07-13 21:13:10,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:10,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:13:10,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:10,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:13:10,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:13:10,536 INFO L87 Difference]: Start difference. First operand 594 states and 900 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:13:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:11,733 INFO L93 Difference]: Finished difference Result 808 states and 1194 transitions. [2022-07-13 21:13:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:13:11,734 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-13 21:13:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:11,738 INFO L225 Difference]: With dead ends: 808 [2022-07-13 21:13:11,739 INFO L226 Difference]: Without dead ends: 631 [2022-07-13 21:13:11,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:13:11,741 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 1028 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 2986 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:11,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 2986 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:13:11,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2022-07-13 21:13:11,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 599. [2022-07-13 21:13:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 522 states have (on average 1.524904214559387) internal successors, (796), 528 states have internal predecessors, (796), 52 states have call successors, (52), 21 states have call predecessors, (52), 23 states have return successors, (56), 52 states have call predecessors, (56), 50 states have call successors, (56) [2022-07-13 21:13:11,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 904 transitions. [2022-07-13 21:13:11,777 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 904 transitions. Word has length 65 [2022-07-13 21:13:11,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:11,777 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 904 transitions. [2022-07-13 21:13:11,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:13:11,778 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 904 transitions. [2022-07-13 21:13:11,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:13:11,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:11,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:11,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:13:11,781 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:11,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:11,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1880612701, now seen corresponding path program 1 times [2022-07-13 21:13:11,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:11,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879069173] [2022-07-13 21:13:11,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:11,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:11,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:11,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:11,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:11,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:11,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:11,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:11,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:11,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:11,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:11,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879069173] [2022-07-13 21:13:11,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879069173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:11,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:11,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:13:11,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645330082] [2022-07-13 21:13:11,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:11,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:13:11,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:11,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:13:11,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:13:11,935 INFO L87 Difference]: Start difference. First operand 599 states and 904 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-13 21:13:13,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:13,785 INFO L93 Difference]: Finished difference Result 1499 states and 2123 transitions. [2022-07-13 21:13:13,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 21:13:13,786 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), 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 65 [2022-07-13 21:13:13,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:13,799 INFO L225 Difference]: With dead ends: 1499 [2022-07-13 21:13:13,799 INFO L226 Difference]: Without dead ends: 1305 [2022-07-13 21:13:13,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 21:13:13,807 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 4244 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4260 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 2277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:13,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4260 Valid, 2718 Invalid, 2277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 21:13:13,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2022-07-13 21:13:13,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1180. [2022-07-13 21:13:13,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 984 states have (on average 1.4329268292682926) internal successors, (1410), 998 states have internal predecessors, (1410), 109 states have call successors, (109), 74 states have call predecessors, (109), 85 states have return successors, (125), 109 states have call predecessors, (125), 107 states have call successors, (125) [2022-07-13 21:13:13,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1644 transitions. [2022-07-13 21:13:13,882 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1644 transitions. Word has length 65 [2022-07-13 21:13:13,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:13,884 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1644 transitions. [2022-07-13 21:13:13,884 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), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-13 21:13:13,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1644 transitions. [2022-07-13 21:13:13,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:13:13,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:13,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:13,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:13:13,890 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:13,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:13,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1362905506, now seen corresponding path program 1 times [2022-07-13 21:13:13,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:13,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871805582] [2022-07-13 21:13:13,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:13,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:13,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:13,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:13,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:13,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:13,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:13,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:13,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:13,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:13,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871805582] [2022-07-13 21:13:13,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871805582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:13,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:13,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:13:13,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362425896] [2022-07-13 21:13:13,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:13,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:13:13,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:13,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:13:13,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:13:13,989 INFO L87 Difference]: Start difference. First operand 1180 states and 1644 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:13:15,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:15,165 INFO L93 Difference]: Finished difference Result 2061 states and 2787 transitions. [2022-07-13 21:13:15,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:13:15,165 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-13 21:13:15,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:15,171 INFO L225 Difference]: With dead ends: 2061 [2022-07-13 21:13:15,171 INFO L226 Difference]: Without dead ends: 1292 [2022-07-13 21:13:15,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:13:15,174 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 690 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:15,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 3328 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:13:15,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2022-07-13 21:13:15,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1200. [2022-07-13 21:13:15,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 1000 states have (on average 1.421) internal successors, (1421), 1014 states have internal predecessors, (1421), 109 states have call successors, (109), 74 states have call predecessors, (109), 89 states have return successors, (129), 113 states have call predecessors, (129), 107 states have call successors, (129) [2022-07-13 21:13:15,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1659 transitions. [2022-07-13 21:13:15,218 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1659 transitions. Word has length 65 [2022-07-13 21:13:15,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:15,219 INFO L495 AbstractCegarLoop]: Abstraction has 1200 states and 1659 transitions. [2022-07-13 21:13:15,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:13:15,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1659 transitions. [2022-07-13 21:13:15,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:13:15,220 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:15,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:15,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:13:15,221 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:15,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:15,222 INFO L85 PathProgramCache]: Analyzing trace with hash 23297888, now seen corresponding path program 1 times [2022-07-13 21:13:15,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:15,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152715216] [2022-07-13 21:13:15,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:15,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:15,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:15,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:15,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:15,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:15,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:15,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:15,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:15,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:15,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152715216] [2022-07-13 21:13:15,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152715216] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:15,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:15,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:13:15,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679711378] [2022-07-13 21:13:15,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:15,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:13:15,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:15,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:13:15,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:13:15,332 INFO L87 Difference]: Start difference. First operand 1200 states and 1659 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:13:16,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:16,418 INFO L93 Difference]: Finished difference Result 2768 states and 3606 transitions. [2022-07-13 21:13:16,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:13:16,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-13 21:13:16,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:16,428 INFO L225 Difference]: With dead ends: 2768 [2022-07-13 21:13:16,428 INFO L226 Difference]: Without dead ends: 1980 [2022-07-13 21:13:16,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-13 21:13:16,431 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 1517 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 2578 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:16,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 2578 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:13:16,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2022-07-13 21:13:16,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1648. [2022-07-13 21:13:16,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1353 states have (on average 1.3821138211382114) internal successors, (1870), 1376 states have internal predecessors, (1870), 155 states have call successors, (155), 113 states have call predecessors, (155), 138 states have return successors, (201), 161 states have call predecessors, (201), 153 states have call successors, (201) [2022-07-13 21:13:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2226 transitions. [2022-07-13 21:13:16,518 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2226 transitions. Word has length 65 [2022-07-13 21:13:16,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:16,518 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2226 transitions. [2022-07-13 21:13:16,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:13:16,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2226 transitions. [2022-07-13 21:13:16,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:13:16,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:16,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:16,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:13:16,520 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:16,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:16,521 INFO L85 PathProgramCache]: Analyzing trace with hash -110715618, now seen corresponding path program 1 times [2022-07-13 21:13:16,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:16,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734087658] [2022-07-13 21:13:16,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:16,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:16,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:16,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:16,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:16,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:16,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:16,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:16,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:16,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:16,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:16,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734087658] [2022-07-13 21:13:16,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734087658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:16,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:16,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:16,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505311146] [2022-07-13 21:13:16,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:16,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:16,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:16,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:16,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:16,590 INFO L87 Difference]: Start difference. First operand 1648 states and 2226 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:13:17,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:17,129 INFO L93 Difference]: Finished difference Result 4126 states and 5380 transitions. [2022-07-13 21:13:17,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:13:17,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-13 21:13:17,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:17,156 INFO L225 Difference]: With dead ends: 4126 [2022-07-13 21:13:17,156 INFO L226 Difference]: Without dead ends: 2892 [2022-07-13 21:13:17,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:13:17,162 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 1480 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:17,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 2159 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 21:13:17,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2022-07-13 21:13:17,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2784. [2022-07-13 21:13:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2224 states have (on average 1.3151978417266188) internal successors, (2925), 2269 states have internal predecessors, (2925), 284 states have call successors, (284), 219 states have call predecessors, (284), 274 states have return successors, (415), 300 states have call predecessors, (415), 282 states have call successors, (415) [2022-07-13 21:13:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 3624 transitions. [2022-07-13 21:13:17,274 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 3624 transitions. Word has length 65 [2022-07-13 21:13:17,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:17,275 INFO L495 AbstractCegarLoop]: Abstraction has 2784 states and 3624 transitions. [2022-07-13 21:13:17,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:13:17,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 3624 transitions. [2022-07-13 21:13:17,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:13:17,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:17,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:17,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:13:17,278 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:17,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:17,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1545241855, now seen corresponding path program 1 times [2022-07-13 21:13:17,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:17,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222702477] [2022-07-13 21:13:17,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:17,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:17,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:17,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:17,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:17,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:17,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:17,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:17,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:17,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:17,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222702477] [2022-07-13 21:13:17,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222702477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:17,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:17,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:13:17,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171687917] [2022-07-13 21:13:17,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:17,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:13:17,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:17,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:13:17,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:13:17,348 INFO L87 Difference]: Start difference. First operand 2784 states and 3624 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:13:18,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:18,082 INFO L93 Difference]: Finished difference Result 6236 states and 7956 transitions. [2022-07-13 21:13:18,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:13:18,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-13 21:13:18,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:18,099 INFO L225 Difference]: With dead ends: 6236 [2022-07-13 21:13:18,099 INFO L226 Difference]: Without dead ends: 3873 [2022-07-13 21:13:18,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:13:18,105 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 866 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:18,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 2152 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:13:18,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2022-07-13 21:13:18,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3617. [2022-07-13 21:13:18,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3617 states, 2869 states have (on average 1.295224817009411) internal successors, (3716), 2921 states have internal predecessors, (3716), 376 states have call successors, (376), 299 states have call predecessors, (376), 370 states have return successors, (533), 401 states have call predecessors, (533), 374 states have call successors, (533) [2022-07-13 21:13:18,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3617 states to 3617 states and 4625 transitions. [2022-07-13 21:13:18,303 INFO L78 Accepts]: Start accepts. Automaton has 3617 states and 4625 transitions. Word has length 66 [2022-07-13 21:13:18,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:18,303 INFO L495 AbstractCegarLoop]: Abstraction has 3617 states and 4625 transitions. [2022-07-13 21:13:18,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:13:18,303 INFO L276 IsEmpty]: Start isEmpty. Operand 3617 states and 4625 transitions. [2022-07-13 21:13:18,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 21:13:18,305 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:18,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:18,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:13:18,306 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:18,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:18,306 INFO L85 PathProgramCache]: Analyzing trace with hash 96985182, now seen corresponding path program 1 times [2022-07-13 21:13:18,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:18,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587521631] [2022-07-13 21:13:18,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:18,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:18,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:18,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:18,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:18,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:18,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:18,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:18,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:18,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:18,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587521631] [2022-07-13 21:13:18,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587521631] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:18,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:18,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:13:18,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639008451] [2022-07-13 21:13:18,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:18,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:13:18,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:18,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:13:18,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:13:18,385 INFO L87 Difference]: Start difference. First operand 3617 states and 4625 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:13:18,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:18,822 INFO L93 Difference]: Finished difference Result 7628 states and 9599 transitions. [2022-07-13 21:13:18,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:13:18,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-13 21:13:18,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:18,841 INFO L225 Difference]: With dead ends: 7628 [2022-07-13 21:13:18,841 INFO L226 Difference]: Without dead ends: 4428 [2022-07-13 21:13:18,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:13:18,850 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 1453 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:18,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1884 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:13:18,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2022-07-13 21:13:19,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 4180. [2022-07-13 21:13:19,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4180 states, 3316 states have (on average 1.2855850422195416) internal successors, (4263), 3374 states have internal predecessors, (4263), 432 states have call successors, (432), 349 states have call predecessors, (432), 430 states have return successors, (610), 461 states have call predecessors, (610), 430 states have call successors, (610) [2022-07-13 21:13:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4180 states to 4180 states and 5305 transitions. [2022-07-13 21:13:19,056 INFO L78 Accepts]: Start accepts. Automaton has 4180 states and 5305 transitions. Word has length 72 [2022-07-13 21:13:19,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:19,056 INFO L495 AbstractCegarLoop]: Abstraction has 4180 states and 5305 transitions. [2022-07-13 21:13:19,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:13:19,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4180 states and 5305 transitions. [2022-07-13 21:13:19,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-13 21:13:19,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:19,059 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:19,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:13:19,059 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:19,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:19,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1805429828, now seen corresponding path program 1 times [2022-07-13 21:13:19,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:19,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300156113] [2022-07-13 21:13:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:19,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:19,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:19,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:19,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:19,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:19,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:19,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:19,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:19,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:19,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300156113] [2022-07-13 21:13:19,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300156113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:19,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:19,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:19,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260984939] [2022-07-13 21:13:19,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:19,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:19,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:19,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:19,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:19,144 INFO L87 Difference]: Start difference. First operand 4180 states and 5305 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 21:13:19,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:19,682 INFO L93 Difference]: Finished difference Result 5249 states and 6589 transitions. [2022-07-13 21:13:19,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:13:19,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-13 21:13:19,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:19,704 INFO L225 Difference]: With dead ends: 5249 [2022-07-13 21:13:19,704 INFO L226 Difference]: Without dead ends: 5246 [2022-07-13 21:13:19,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:13:19,708 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 2184 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:19,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2194 Valid, 1860 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:13:19,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5246 states. [2022-07-13 21:13:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5246 to 4937. [2022-07-13 21:13:19,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4937 states, 3894 states have (on average 1.273497688751926) internal successors, (4959), 3959 states have internal predecessors, (4959), 515 states have call successors, (515), 421 states have call predecessors, (515), 526 states have return successors, (738), 561 states have call predecessors, (738), 514 states have call successors, (738) [2022-07-13 21:13:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4937 states to 4937 states and 6212 transitions. [2022-07-13 21:13:19,984 INFO L78 Accepts]: Start accepts. Automaton has 4937 states and 6212 transitions. Word has length 73 [2022-07-13 21:13:19,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:19,985 INFO L495 AbstractCegarLoop]: Abstraction has 4937 states and 6212 transitions. [2022-07-13 21:13:19,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 21:13:19,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4937 states and 6212 transitions. [2022-07-13 21:13:19,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-13 21:13:19,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:19,987 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:19,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:13:19,988 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:19,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:19,988 INFO L85 PathProgramCache]: Analyzing trace with hash -135256984, now seen corresponding path program 1 times [2022-07-13 21:13:19,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:19,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178456254] [2022-07-13 21:13:19,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:19,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:20,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:20,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:20,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:20,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:20,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:20,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:20,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:20,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:20,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:20,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178456254] [2022-07-13 21:13:20,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178456254] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:13:20,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623797702] [2022-07-13 21:13:20,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:20,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:13:20,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:13:20,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:13:20,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 21:13:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:20,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 21:13:20,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:13:20,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:20,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 21:13:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:20,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623797702] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 21:13:20,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 21:13:20,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-13 21:13:20,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169996763] [2022-07-13 21:13:20,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 21:13:20,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:13:20,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:20,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:13:20,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:13:20,697 INFO L87 Difference]: Start difference. First operand 4937 states and 6212 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 21:13:22,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:22,448 INFO L93 Difference]: Finished difference Result 9451 states and 11697 transitions. [2022-07-13 21:13:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 21:13:22,449 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-13 21:13:22,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:22,484 INFO L225 Difference]: With dead ends: 9451 [2022-07-13 21:13:22,485 INFO L226 Difference]: Without dead ends: 9448 [2022-07-13 21:13:22,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-07-13 21:13:22,489 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 2053 mSDsluCounter, 2090 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2120 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:22,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2120 Valid, 3012 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:13:22,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9448 states. [2022-07-13 21:13:22,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9448 to 8562. [2022-07-13 21:13:22,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8562 states, 6729 states have (on average 1.2562044880368555) internal successors, (8453), 6845 states have internal predecessors, (8453), 893 states have call successors, (893), 753 states have call predecessors, (893), 938 states have return successors, (1295), 968 states have call predecessors, (1295), 892 states have call successors, (1295) [2022-07-13 21:13:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8562 states to 8562 states and 10641 transitions. [2022-07-13 21:13:22,888 INFO L78 Accepts]: Start accepts. Automaton has 8562 states and 10641 transitions. Word has length 74 [2022-07-13 21:13:22,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:22,888 INFO L495 AbstractCegarLoop]: Abstraction has 8562 states and 10641 transitions. [2022-07-13 21:13:22,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 21:13:22,889 INFO L276 IsEmpty]: Start isEmpty. Operand 8562 states and 10641 transitions. [2022-07-13 21:13:22,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 21:13:22,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:22,892 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:22,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 21:13:23,108 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,SelfDestructingSolverStorable9 [2022-07-13 21:13:23,108 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:23,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:23,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1838569788, now seen corresponding path program 2 times [2022-07-13 21:13:23,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:23,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553518926] [2022-07-13 21:13:23,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:23,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:23,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:23,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:23,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:23,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:23,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:23,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:23,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:23,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:23,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553518926] [2022-07-13 21:13:23,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553518926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:23,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:23,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:13:23,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114835379] [2022-07-13 21:13:23,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:23,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:13:23,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:23,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:13:23,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:13:23,204 INFO L87 Difference]: Start difference. First operand 8562 states and 10641 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 21:13:23,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:23,716 INFO L93 Difference]: Finished difference Result 11592 states and 14388 transitions. [2022-07-13 21:13:23,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:13:23,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-13 21:13:23,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:23,734 INFO L225 Difference]: With dead ends: 11592 [2022-07-13 21:13:23,735 INFO L226 Difference]: Without dead ends: 4794 [2022-07-13 21:13:23,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:13:23,750 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 1723 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:23,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1760 Valid, 1580 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:13:23,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4794 states. [2022-07-13 21:13:23,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4794 to 3725. [2022-07-13 21:13:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3725 states, 2960 states have (on average 1.2658783783783785) internal successors, (3747), 2998 states have internal predecessors, (3747), 392 states have call successors, (392), 317 states have call predecessors, (392), 371 states have return successors, (519), 414 states have call predecessors, (519), 391 states have call successors, (519) [2022-07-13 21:13:23,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3725 states to 3725 states and 4658 transitions. [2022-07-13 21:13:23,970 INFO L78 Accepts]: Start accepts. Automaton has 3725 states and 4658 transitions. Word has length 77 [2022-07-13 21:13:23,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:23,970 INFO L495 AbstractCegarLoop]: Abstraction has 3725 states and 4658 transitions. [2022-07-13 21:13:23,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 21:13:23,971 INFO L276 IsEmpty]: Start isEmpty. Operand 3725 states and 4658 transitions. [2022-07-13 21:13:23,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-13 21:13:23,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:23,973 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:23,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:13:23,973 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:23,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:23,974 INFO L85 PathProgramCache]: Analyzing trace with hash -286768902, now seen corresponding path program 1 times [2022-07-13 21:13:23,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:23,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841591059] [2022-07-13 21:13:23,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:23,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:24,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:24,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:24,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:24,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:24,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:24,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:24,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 21:13:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:13:24,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:24,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841591059] [2022-07-13 21:13:24,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841591059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:24,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:24,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:13:24,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892321510] [2022-07-13 21:13:24,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:24,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:13:24,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:24,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:13:24,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:13:24,056 INFO L87 Difference]: Start difference. First operand 3725 states and 4658 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 21:13:25,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:25,261 INFO L93 Difference]: Finished difference Result 10333 states and 12681 transitions. [2022-07-13 21:13:25,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 21:13:25,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-13 21:13:25,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:25,281 INFO L225 Difference]: With dead ends: 10333 [2022-07-13 21:13:25,281 INFO L226 Difference]: Without dead ends: 5957 [2022-07-13 21:13:25,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-13 21:13:25,291 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 1545 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:25,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 2672 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:13:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5957 states. [2022-07-13 21:13:25,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5957 to 5693. [2022-07-13 21:13:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5693 states, 4455 states have (on average 1.2287317620650955) internal successors, (5474), 4536 states have internal predecessors, (5474), 608 states have call successors, (608), 503 states have call predecessors, (608), 628 states have return successors, (903), 658 states have call predecessors, (903), 607 states have call successors, (903) [2022-07-13 21:13:25,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5693 states to 5693 states and 6985 transitions. [2022-07-13 21:13:25,569 INFO L78 Accepts]: Start accepts. Automaton has 5693 states and 6985 transitions. Word has length 84 [2022-07-13 21:13:25,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:25,570 INFO L495 AbstractCegarLoop]: Abstraction has 5693 states and 6985 transitions. [2022-07-13 21:13:25,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 21:13:25,570 INFO L276 IsEmpty]: Start isEmpty. Operand 5693 states and 6985 transitions. [2022-07-13 21:13:25,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 21:13:25,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:25,572 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:25,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:13:25,573 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:25,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:25,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1436073062, now seen corresponding path program 1 times [2022-07-13 21:13:25,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:25,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114868932] [2022-07-13 21:13:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:25,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 21:13:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 21:13:25,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:25,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114868932] [2022-07-13 21:13:25,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114868932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:25,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:25,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:13:25,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287867637] [2022-07-13 21:13:25,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:25,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:13:25,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:25,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:13:25,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:13:25,654 INFO L87 Difference]: Start difference. First operand 5693 states and 6985 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 21:13:27,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:27,116 INFO L93 Difference]: Finished difference Result 9340 states and 11343 transitions. [2022-07-13 21:13:27,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 21:13:27,117 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-13 21:13:27,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:27,140 INFO L225 Difference]: With dead ends: 9340 [2022-07-13 21:13:27,140 INFO L226 Difference]: Without dead ends: 4791 [2022-07-13 21:13:27,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-13 21:13:27,151 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 2030 mSDsluCounter, 2259 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2070 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:27,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2070 Valid, 3043 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:13:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4791 states. [2022-07-13 21:13:27,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4791 to 4360. [2022-07-13 21:13:27,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4360 states, 3408 states have (on average 1.2183098591549295) internal successors, (4152), 3472 states have internal predecessors, (4152), 465 states have call successors, (465), 378 states have call predecessors, (465), 485 states have return successors, (645), 514 states have call predecessors, (645), 464 states have call successors, (645) [2022-07-13 21:13:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4360 states to 4360 states and 5262 transitions. [2022-07-13 21:13:27,403 INFO L78 Accepts]: Start accepts. Automaton has 4360 states and 5262 transitions. Word has length 93 [2022-07-13 21:13:27,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:27,404 INFO L495 AbstractCegarLoop]: Abstraction has 4360 states and 5262 transitions. [2022-07-13 21:13:27,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 21:13:27,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4360 states and 5262 transitions. [2022-07-13 21:13:27,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:13:27,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:27,409 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:27,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:13:27,409 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:27,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:27,410 INFO L85 PathProgramCache]: Analyzing trace with hash -300636648, now seen corresponding path program 1 times [2022-07-13 21:13:27,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:27,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059585146] [2022-07-13 21:13:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:27,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 21:13:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 21:13:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 21:13:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 21:13:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:13:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 21:13:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 21:13:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,524 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-13 21:13:27,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:27,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059585146] [2022-07-13 21:13:27,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059585146] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:13:27,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491548224] [2022-07-13 21:13:27,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:27,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:13:27,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:13:27,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:13:27,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 21:13:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:27,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 21:13:27,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:13:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 21:13:27,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:13:27,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491548224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:27,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:13:27,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-13 21:13:27,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054376554] [2022-07-13 21:13:27,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:27,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:13:27,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:27,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:13:27,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 21:13:27,719 INFO L87 Difference]: Start difference. First operand 4360 states and 5262 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 21:13:27,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:27,860 INFO L93 Difference]: Finished difference Result 6580 states and 7901 transitions. [2022-07-13 21:13:27,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:13:27,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-13 21:13:27,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:27,868 INFO L225 Difference]: With dead ends: 6580 [2022-07-13 21:13:27,869 INFO L226 Difference]: Without dead ends: 2641 [2022-07-13 21:13:27,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:13:27,876 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 34 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3785 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:27,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3785 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:13:27,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2022-07-13 21:13:27,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2485. [2022-07-13 21:13:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2033 states have (on average 1.2415150024594195) internal successors, (2524), 2051 states have internal predecessors, (2524), 227 states have call successors, (227), 172 states have call predecessors, (227), 223 states have return successors, (309), 262 states have call predecessors, (309), 226 states have call successors, (309) [2022-07-13 21:13:27,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 3060 transitions. [2022-07-13 21:13:27,995 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 3060 transitions. Word has length 145 [2022-07-13 21:13:27,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:27,996 INFO L495 AbstractCegarLoop]: Abstraction has 2485 states and 3060 transitions. [2022-07-13 21:13:27,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 21:13:27,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 3060 transitions. [2022-07-13 21:13:27,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-13 21:13:27,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:27,999 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:28,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 21:13:28,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 21:13:28,216 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:28,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:28,216 INFO L85 PathProgramCache]: Analyzing trace with hash -84639876, now seen corresponding path program 1 times [2022-07-13 21:13:28,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:28,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546349270] [2022-07-13 21:13:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:28,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 21:13:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 21:13:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 21:13:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 21:13:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 21:13:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 21:13:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 21:13:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-13 21:13:28,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:28,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546349270] [2022-07-13 21:13:28,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546349270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:28,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:28,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:13:28,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201862967] [2022-07-13 21:13:28,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:28,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:13:28,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:28,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:13:28,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:13:28,307 INFO L87 Difference]: Start difference. First operand 2485 states and 3060 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 21:13:28,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:28,951 INFO L93 Difference]: Finished difference Result 2539 states and 3116 transitions. [2022-07-13 21:13:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:13:28,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-07-13 21:13:28,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:28,956 INFO L225 Difference]: With dead ends: 2539 [2022-07-13 21:13:28,956 INFO L226 Difference]: Without dead ends: 2021 [2022-07-13 21:13:28,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:13:28,958 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 791 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:28,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 2082 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:13:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2022-07-13 21:13:29,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1970. [2022-07-13 21:13:29,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1636 states have (on average 1.267114914425428) internal successors, (2073), 1650 states have internal predecessors, (2073), 170 states have call successors, (170), 123 states have call predecessors, (170), 162 states have return successors, (231), 197 states have call predecessors, (231), 169 states have call successors, (231) [2022-07-13 21:13:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 2474 transitions. [2022-07-13 21:13:29,051 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 2474 transitions. Word has length 147 [2022-07-13 21:13:29,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:29,051 INFO L495 AbstractCegarLoop]: Abstraction has 1970 states and 2474 transitions. [2022-07-13 21:13:29,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 21:13:29,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 2474 transitions. [2022-07-13 21:13:29,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-13 21:13:29,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:29,054 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:29,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:13:29,055 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:29,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:29,055 INFO L85 PathProgramCache]: Analyzing trace with hash 337333286, now seen corresponding path program 1 times [2022-07-13 21:13:29,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:29,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794721982] [2022-07-13 21:13:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:29,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:13:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:13:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 21:13:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 21:13:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 21:13:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 21:13:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 21:13:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,150 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-13 21:13:29,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:29,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794721982] [2022-07-13 21:13:29,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794721982] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:29,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:29,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:29,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440083331] [2022-07-13 21:13:29,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:29,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:29,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:29,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:29,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:29,152 INFO L87 Difference]: Start difference. First operand 1970 states and 2474 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 21:13:29,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:29,969 INFO L93 Difference]: Finished difference Result 3253 states and 3994 transitions. [2022-07-13 21:13:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:13:29,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-07-13 21:13:29,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:29,973 INFO L225 Difference]: With dead ends: 3253 [2022-07-13 21:13:29,973 INFO L226 Difference]: Without dead ends: 1863 [2022-07-13 21:13:29,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:13:29,976 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 719 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:29,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 2601 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:13:29,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2022-07-13 21:13:30,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1717. [2022-07-13 21:13:30,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1434 states have (on average 1.2852161785216178) internal successors, (1843), 1448 states have internal predecessors, (1843), 145 states have call successors, (145), 102 states have call predecessors, (145), 136 states have return successors, (193), 167 states have call predecessors, (193), 144 states have call successors, (193) [2022-07-13 21:13:30,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2181 transitions. [2022-07-13 21:13:30,053 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2181 transitions. Word has length 159 [2022-07-13 21:13:30,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:30,053 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2181 transitions. [2022-07-13 21:13:30,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 21:13:30,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2181 transitions. [2022-07-13 21:13:30,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 21:13:30,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:30,056 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:30,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:13:30,057 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:30,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:30,057 INFO L85 PathProgramCache]: Analyzing trace with hash 673154667, now seen corresponding path program 1 times [2022-07-13 21:13:30,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:30,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158223944] [2022-07-13 21:13:30,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:30,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:13:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:13:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 21:13:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 21:13:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 21:13:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 21:13:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:13:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-13 21:13:30,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:30,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158223944] [2022-07-13 21:13:30,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158223944] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:13:30,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384094435] [2022-07-13 21:13:30,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:30,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:13:30,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:13:30,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:13:30,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 21:13:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 21:13:30,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:13:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 21:13:30,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:13:30,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384094435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:30,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:13:30,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-07-13 21:13:30,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344808610] [2022-07-13 21:13:30,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:30,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:13:30,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:30,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:13:30,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:13:30,475 INFO L87 Difference]: Start difference. First operand 1717 states and 2181 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 21:13:30,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:30,920 INFO L93 Difference]: Finished difference Result 4043 states and 4989 transitions. [2022-07-13 21:13:30,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:13:30,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 162 [2022-07-13 21:13:30,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:30,927 INFO L225 Difference]: With dead ends: 4043 [2022-07-13 21:13:30,927 INFO L226 Difference]: Without dead ends: 2633 [2022-07-13 21:13:30,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-13 21:13:30,930 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 397 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:30,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1486 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:13:30,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2022-07-13 21:13:31,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2591. [2022-07-13 21:13:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2591 states, 2165 states have (on average 1.2378752886836029) internal successors, (2680), 2183 states have internal predecessors, (2680), 215 states have call successors, (215), 153 states have call predecessors, (215), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2022-07-13 21:13:31,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 3199 transitions. [2022-07-13 21:13:31,057 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 3199 transitions. Word has length 162 [2022-07-13 21:13:31,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:31,058 INFO L495 AbstractCegarLoop]: Abstraction has 2591 states and 3199 transitions. [2022-07-13 21:13:31,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 21:13:31,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 3199 transitions. [2022-07-13 21:13:31,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:13:31,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:31,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:31,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 21:13:31,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:13:31,285 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:31,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:31,285 INFO L85 PathProgramCache]: Analyzing trace with hash 544629261, now seen corresponding path program 1 times [2022-07-13 21:13:31,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:31,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341040065] [2022-07-13 21:13:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:31,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:31,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:31,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:13:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:13:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:31,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:13:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:31,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:13:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:31,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:31,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341040065] [2022-07-13 21:13:31,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341040065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:31,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:31,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:13:31,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997896940] [2022-07-13 21:13:31,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:31,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:13:31,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:31,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:13:31,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:13:31,413 INFO L87 Difference]: Start difference. First operand 2591 states and 3199 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:33,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:33,029 INFO L93 Difference]: Finished difference Result 3140 states and 4091 transitions. [2022-07-13 21:13:33,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:13:33,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:13:33,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:33,037 INFO L225 Difference]: With dead ends: 3140 [2022-07-13 21:13:33,037 INFO L226 Difference]: Without dead ends: 2744 [2022-07-13 21:13:33,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:13:33,039 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 1209 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:33,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 1408 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:13:33,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2022-07-13 21:13:33,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2591. [2022-07-13 21:13:33,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2591 states, 2165 states have (on average 1.2374133949191686) internal successors, (2679), 2183 states have internal predecessors, (2679), 215 states have call successors, (215), 153 states have call predecessors, (215), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2022-07-13 21:13:33,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 3198 transitions. [2022-07-13 21:13:33,234 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 3198 transitions. Word has length 189 [2022-07-13 21:13:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:33,234 INFO L495 AbstractCegarLoop]: Abstraction has 2591 states and 3198 transitions. [2022-07-13 21:13:33,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:33,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 3198 transitions. [2022-07-13 21:13:33,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:13:33,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:33,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:33,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:13:33,238 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:33,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:33,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1212997877, now seen corresponding path program 1 times [2022-07-13 21:13:33,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:33,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279041113] [2022-07-13 21:13:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:33,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:13:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:13:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:13:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:13:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:33,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:33,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279041113] [2022-07-13 21:13:33,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279041113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:33,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:33,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:13:33,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959760375] [2022-07-13 21:13:33,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:33,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:13:33,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:33,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:13:33,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:13:33,367 INFO L87 Difference]: Start difference. First operand 2591 states and 3198 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:35,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:35,032 INFO L93 Difference]: Finished difference Result 3132 states and 4074 transitions. [2022-07-13 21:13:35,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:13:35,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:13:35,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:35,040 INFO L225 Difference]: With dead ends: 3132 [2022-07-13 21:13:35,040 INFO L226 Difference]: Without dead ends: 2744 [2022-07-13 21:13:35,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:13:35,042 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 1200 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:35,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 1406 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:13:35,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2022-07-13 21:13:35,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2591. [2022-07-13 21:13:35,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2591 states, 2165 states have (on average 1.2369515011547345) internal successors, (2678), 2183 states have internal predecessors, (2678), 215 states have call successors, (215), 153 states have call predecessors, (215), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2022-07-13 21:13:35,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 3197 transitions. [2022-07-13 21:13:35,247 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 3197 transitions. Word has length 189 [2022-07-13 21:13:35,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:35,247 INFO L495 AbstractCegarLoop]: Abstraction has 2591 states and 3197 transitions. [2022-07-13 21:13:35,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:35,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 3197 transitions. [2022-07-13 21:13:35,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:13:35,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:35,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:35,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:13:35,250 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:35,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:35,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1740391927, now seen corresponding path program 1 times [2022-07-13 21:13:35,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:35,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271495549] [2022-07-13 21:13:35,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:35,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:35,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:35,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:13:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:35,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:13:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:35,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:13:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:35,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:13:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:35,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:35,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271495549] [2022-07-13 21:13:35,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271495549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:35,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:35,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:13:35,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234618441] [2022-07-13 21:13:35,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:35,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:13:35,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:35,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:13:35,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:13:35,380 INFO L87 Difference]: Start difference. First operand 2591 states and 3197 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:38,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:38,280 INFO L93 Difference]: Finished difference Result 3679 states and 4964 transitions. [2022-07-13 21:13:38,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:13:38,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:13:38,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:38,287 INFO L225 Difference]: With dead ends: 3679 [2022-07-13 21:13:38,287 INFO L226 Difference]: Without dead ends: 3298 [2022-07-13 21:13:38,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:13:38,289 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 1882 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1912 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 2476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:38,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1912 Valid, 2200 Invalid, 2476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:13:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2022-07-13 21:13:38,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 2993. [2022-07-13 21:13:38,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2993 states, 2538 states have (on average 1.2903861308116626) internal successors, (3275), 2557 states have internal predecessors, (3275), 237 states have call successors, (237), 159 states have call predecessors, (237), 216 states have return successors, (329), 277 states have call predecessors, (329), 236 states have call successors, (329) [2022-07-13 21:13:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2993 states to 2993 states and 3841 transitions. [2022-07-13 21:13:38,518 INFO L78 Accepts]: Start accepts. Automaton has 2993 states and 3841 transitions. Word has length 189 [2022-07-13 21:13:38,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:38,518 INFO L495 AbstractCegarLoop]: Abstraction has 2993 states and 3841 transitions. [2022-07-13 21:13:38,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2993 states and 3841 transitions. [2022-07-13 21:13:38,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:13:38,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:38,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:38,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 21:13:38,522 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:38,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:38,522 INFO L85 PathProgramCache]: Analyzing trace with hash 631324939, now seen corresponding path program 1 times [2022-07-13 21:13:38,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:38,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579906633] [2022-07-13 21:13:38,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:38,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:38,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:38,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:13:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:38,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:13:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:38,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:13:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:38,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:13:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:38,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:38,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579906633] [2022-07-13 21:13:38,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579906633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:38,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:38,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:38,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353670779] [2022-07-13 21:13:38,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:38,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:38,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:38,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:38,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:38,656 INFO L87 Difference]: Start difference. First operand 2993 states and 3841 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:42,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:42,184 INFO L93 Difference]: Finished difference Result 4657 states and 6547 transitions. [2022-07-13 21:13:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:13:42,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:13:42,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:42,195 INFO L225 Difference]: With dead ends: 4657 [2022-07-13 21:13:42,196 INFO L226 Difference]: Without dead ends: 3874 [2022-07-13 21:13:42,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:13:42,200 INFO L413 NwaCegarLoop]: 1196 mSDtfsCounter, 1915 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 3542 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1945 SdHoareTripleChecker+Valid, 3401 SdHoareTripleChecker+Invalid, 3653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:42,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1945 Valid, 3401 Invalid, 3653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3542 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 21:13:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3874 states. [2022-07-13 21:13:42,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3874 to 3366. [2022-07-13 21:13:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3366 states, 2882 states have (on average 1.323386537126995) internal successors, (3814), 2902 states have internal predecessors, (3814), 259 states have call successors, (259), 165 states have call predecessors, (259), 223 states have return successors, (353), 300 states have call predecessors, (353), 258 states have call successors, (353) [2022-07-13 21:13:42,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 4426 transitions. [2022-07-13 21:13:42,501 INFO L78 Accepts]: Start accepts. Automaton has 3366 states and 4426 transitions. Word has length 189 [2022-07-13 21:13:42,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:42,502 INFO L495 AbstractCegarLoop]: Abstraction has 3366 states and 4426 transitions. [2022-07-13 21:13:42,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:42,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3366 states and 4426 transitions. [2022-07-13 21:13:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:13:42,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:42,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:42,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 21:13:42,506 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:42,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:42,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1093283383, now seen corresponding path program 1 times [2022-07-13 21:13:42,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:42,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378393500] [2022-07-13 21:13:42,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:42,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:13:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:13:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:13:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:13:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:42,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:42,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378393500] [2022-07-13 21:13:42,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378393500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:42,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:42,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:42,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535199640] [2022-07-13 21:13:42,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:42,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:42,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:42,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:42,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:42,646 INFO L87 Difference]: Start difference. First operand 3366 states and 4426 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:46,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:46,378 INFO L93 Difference]: Finished difference Result 6099 states and 8860 transitions. [2022-07-13 21:13:46,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:13:46,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:13:46,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:46,394 INFO L225 Difference]: With dead ends: 6099 [2022-07-13 21:13:46,395 INFO L226 Difference]: Without dead ends: 4943 [2022-07-13 21:13:46,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:13:46,403 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 1912 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 3544 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1942 SdHoareTripleChecker+Valid, 3393 SdHoareTripleChecker+Invalid, 3658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 3544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:46,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1942 Valid, 3393 Invalid, 3658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 3544 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 21:13:46,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4943 states. [2022-07-13 21:13:46,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4943 to 4113. [2022-07-13 21:13:46,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4113 states, 3571 states have (on average 1.3702044245309437) internal successors, (4893), 3593 states have internal predecessors, (4893), 303 states have call successors, (303), 177 states have call predecessors, (303), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2022-07-13 21:13:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 5601 transitions. [2022-07-13 21:13:46,726 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 5601 transitions. Word has length 189 [2022-07-13 21:13:46,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:46,726 INFO L495 AbstractCegarLoop]: Abstraction has 4113 states and 5601 transitions. [2022-07-13 21:13:46,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:46,727 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 5601 transitions. [2022-07-13 21:13:46,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:13:46,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:46,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:46,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 21:13:46,730 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:46,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:46,730 INFO L85 PathProgramCache]: Analyzing trace with hash -594726581, now seen corresponding path program 1 times [2022-07-13 21:13:46,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:46,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610046842] [2022-07-13 21:13:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:46,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:46,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:46,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:13:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:46,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:13:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:46,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:13:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:46,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:13:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:46,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:46,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610046842] [2022-07-13 21:13:46,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610046842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:46,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:46,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:46,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885565515] [2022-07-13 21:13:46,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:46,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:46,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:46,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:46,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:46,888 INFO L87 Difference]: Start difference. First operand 4113 states and 5601 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:49,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:49,186 INFO L93 Difference]: Finished difference Result 6836 states and 10028 transitions. [2022-07-13 21:13:49,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:13:49,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:13:49,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:49,200 INFO L225 Difference]: With dead ends: 6836 [2022-07-13 21:13:49,200 INFO L226 Difference]: Without dead ends: 4933 [2022-07-13 21:13:49,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:13:49,205 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 1415 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2008 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:49,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 2008 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 21:13:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4933 states. [2022-07-13 21:13:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4933 to 4113. [2022-07-13 21:13:49,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4113 states, 3571 states have (on average 1.3688042565107812) internal successors, (4888), 3593 states have internal predecessors, (4888), 303 states have call successors, (303), 177 states have call predecessors, (303), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2022-07-13 21:13:49,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 5596 transitions. [2022-07-13 21:13:49,562 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 5596 transitions. Word has length 189 [2022-07-13 21:13:49,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:49,562 INFO L495 AbstractCegarLoop]: Abstraction has 4113 states and 5596 transitions. [2022-07-13 21:13:49,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:49,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 5596 transitions. [2022-07-13 21:13:49,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:13:49,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:49,566 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:49,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 21:13:49,566 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:49,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:49,566 INFO L85 PathProgramCache]: Analyzing trace with hash -24454775, now seen corresponding path program 1 times [2022-07-13 21:13:49,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:49,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481226062] [2022-07-13 21:13:49,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:49,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:49,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:49,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:13:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:49,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:13:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:49,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:13:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:49,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:13:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:49,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:49,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481226062] [2022-07-13 21:13:49,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481226062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:49,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:49,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:49,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237277213] [2022-07-13 21:13:49,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:49,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:49,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:49,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:49,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:49,694 INFO L87 Difference]: Start difference. First operand 4113 states and 5596 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:52,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:52,114 INFO L93 Difference]: Finished difference Result 6830 states and 10002 transitions. [2022-07-13 21:13:52,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:13:52,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:13:52,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:52,127 INFO L225 Difference]: With dead ends: 6830 [2022-07-13 21:13:52,127 INFO L226 Difference]: Without dead ends: 4927 [2022-07-13 21:13:52,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:13:52,134 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 1415 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 1839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:52,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 2002 Invalid, 1839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 21:13:52,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4927 states. [2022-07-13 21:13:52,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4927 to 4113. [2022-07-13 21:13:52,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4113 states, 3571 states have (on average 1.367404088490619) internal successors, (4883), 3593 states have internal predecessors, (4883), 303 states have call successors, (303), 177 states have call predecessors, (303), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2022-07-13 21:13:52,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 5591 transitions. [2022-07-13 21:13:52,500 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 5591 transitions. Word has length 189 [2022-07-13 21:13:52,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:52,500 INFO L495 AbstractCegarLoop]: Abstraction has 4113 states and 5591 transitions. [2022-07-13 21:13:52,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:52,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 5591 transitions. [2022-07-13 21:13:52,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:13:52,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:52,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:52,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 21:13:52,504 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:52,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1379414411, now seen corresponding path program 1 times [2022-07-13 21:13:52,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:52,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408551151] [2022-07-13 21:13:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:52,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:52,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:52,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:13:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:52,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:13:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:52,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:13:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:52,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:13:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:52,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:52,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408551151] [2022-07-13 21:13:52,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408551151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:52,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:52,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:52,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841377253] [2022-07-13 21:13:52,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:52,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:52,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:52,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:52,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:52,663 INFO L87 Difference]: Start difference. First operand 4113 states and 5591 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:54,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:54,378 INFO L93 Difference]: Finished difference Result 6818 states and 9964 transitions. [2022-07-13 21:13:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:13:54,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:13:54,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:54,389 INFO L225 Difference]: With dead ends: 6818 [2022-07-13 21:13:54,389 INFO L226 Difference]: Without dead ends: 4915 [2022-07-13 21:13:54,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:13:54,393 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 1641 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:54,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1672 Valid, 1738 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:13:54,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4915 states. [2022-07-13 21:13:54,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4915 to 4113. [2022-07-13 21:13:54,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4113 states, 3571 states have (on average 1.3660039204704564) internal successors, (4878), 3593 states have internal predecessors, (4878), 303 states have call successors, (303), 177 states have call predecessors, (303), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2022-07-13 21:13:54,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 5586 transitions. [2022-07-13 21:13:54,717 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 5586 transitions. Word has length 189 [2022-07-13 21:13:54,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:54,717 INFO L495 AbstractCegarLoop]: Abstraction has 4113 states and 5586 transitions. [2022-07-13 21:13:54,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:54,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 5586 transitions. [2022-07-13 21:13:54,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:13:54,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:54,721 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:54,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 21:13:54,721 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:54,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:54,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2046796301, now seen corresponding path program 1 times [2022-07-13 21:13:54,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:54,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286822175] [2022-07-13 21:13:54,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:54,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:54,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:54,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:13:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:54,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:13:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:54,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:13:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:54,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:13:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:54,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:54,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:54,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286822175] [2022-07-13 21:13:54,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286822175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:54,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:54,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:54,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648395387] [2022-07-13 21:13:54,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:54,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:54,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:54,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:54,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:54,862 INFO L87 Difference]: Start difference. First operand 4113 states and 5586 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:58,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:58,545 INFO L93 Difference]: Finished difference Result 8845 states and 13159 transitions. [2022-07-13 21:13:58,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:13:58,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:13:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:58,563 INFO L225 Difference]: With dead ends: 8845 [2022-07-13 21:13:58,564 INFO L226 Difference]: Without dead ends: 6942 [2022-07-13 21:13:58,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:13:58,571 INFO L413 NwaCegarLoop]: 1160 mSDtfsCounter, 1887 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 3466 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 3584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:58,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1917 Valid, 3365 Invalid, 3584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3466 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 21:13:58,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6942 states. [2022-07-13 21:13:59,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6942 to 5626. [2022-07-13 21:13:59,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5626 states, 4968 states have (on average 1.4190821256038648) internal successors, (7050), 4994 states have internal predecessors, (7050), 391 states have call successors, (391), 201 states have call predecessors, (391), 265 states have return successors, (515), 438 states have call predecessors, (515), 390 states have call successors, (515) [2022-07-13 21:13:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5626 states to 5626 states and 7956 transitions. [2022-07-13 21:13:59,116 INFO L78 Accepts]: Start accepts. Automaton has 5626 states and 7956 transitions. Word has length 189 [2022-07-13 21:13:59,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:59,116 INFO L495 AbstractCegarLoop]: Abstraction has 5626 states and 7956 transitions. [2022-07-13 21:13:59,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:13:59,117 INFO L276 IsEmpty]: Start isEmpty. Operand 5626 states and 7956 transitions. [2022-07-13 21:13:59,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:13:59,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:59,120 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:13:59,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 21:13:59,121 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:59,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:59,121 INFO L85 PathProgramCache]: Analyzing trace with hash -148432565, now seen corresponding path program 1 times [2022-07-13 21:13:59,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:59,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665872452] [2022-07-13 21:13:59,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:59,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:59,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:59,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:13:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:59,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:13:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:59,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:13:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:59,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:13:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:59,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:59,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665872452] [2022-07-13 21:13:59,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665872452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:59,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:59,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:59,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057006901] [2022-07-13 21:13:59,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:59,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:59,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:59,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:59,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:59,268 INFO L87 Difference]: Start difference. First operand 5626 states and 7956 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:01,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:01,356 INFO L93 Difference]: Finished difference Result 10384 states and 15607 transitions. [2022-07-13 21:14:01,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:01,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:14:01,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:01,373 INFO L225 Difference]: With dead ends: 10384 [2022-07-13 21:14:01,374 INFO L226 Difference]: Without dead ends: 6968 [2022-07-13 21:14:01,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:14:01,383 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 1718 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:01,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1749 Valid, 1691 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:14:01,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6968 states. [2022-07-13 21:14:01,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6968 to 5626. [2022-07-13 21:14:01,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5626 states, 4968 states have (on average 1.4172705314009661) internal successors, (7041), 4994 states have internal predecessors, (7041), 391 states have call successors, (391), 201 states have call predecessors, (391), 265 states have return successors, (515), 438 states have call predecessors, (515), 390 states have call successors, (515) [2022-07-13 21:14:01,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5626 states to 5626 states and 7947 transitions. [2022-07-13 21:14:01,902 INFO L78 Accepts]: Start accepts. Automaton has 5626 states and 7947 transitions. Word has length 189 [2022-07-13 21:14:01,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:01,903 INFO L495 AbstractCegarLoop]: Abstraction has 5626 states and 7947 transitions. [2022-07-13 21:14:01,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:01,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5626 states and 7947 transitions. [2022-07-13 21:14:01,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:14:01,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:01,906 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:01,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 21:14:01,907 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:01,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:01,907 INFO L85 PathProgramCache]: Analyzing trace with hash 196395597, now seen corresponding path program 1 times [2022-07-13 21:14:01,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:01,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063190697] [2022-07-13 21:14:01,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:01,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:01,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:01,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:02,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:02,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063190697] [2022-07-13 21:14:02,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063190697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:02,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:02,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:02,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942246932] [2022-07-13 21:14:02,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:02,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:02,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:02,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:02,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:02,043 INFO L87 Difference]: Start difference. First operand 5626 states and 7947 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:06,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:06,244 INFO L93 Difference]: Finished difference Result 14378 states and 21879 transitions. [2022-07-13 21:14:06,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:14:06,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:14:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:06,278 INFO L225 Difference]: With dead ends: 14378 [2022-07-13 21:14:06,278 INFO L226 Difference]: Without dead ends: 10962 [2022-07-13 21:14:06,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:14:06,290 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 1879 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 3439 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 3557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:06,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1909 Valid, 3354 Invalid, 3557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3439 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 21:14:06,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10962 states. [2022-07-13 21:14:07,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10962 to 8660. [2022-07-13 21:14:07,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8660 states, 7770 states have (on average 1.4647361647361647) internal successors, (11381), 7804 states have internal predecessors, (11381), 567 states have call successors, (567), 249 states have call predecessors, (567), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2022-07-13 21:14:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 12701 transitions. [2022-07-13 21:14:07,140 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 12701 transitions. Word has length 189 [2022-07-13 21:14:07,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:07,141 INFO L495 AbstractCegarLoop]: Abstraction has 8660 states and 12701 transitions. [2022-07-13 21:14:07,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:07,141 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 12701 transitions. [2022-07-13 21:14:07,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:14:07,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:07,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:07,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 21:14:07,146 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:07,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:07,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1177350411, now seen corresponding path program 1 times [2022-07-13 21:14:07,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:07,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006567745] [2022-07-13 21:14:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:07,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:07,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:07,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006567745] [2022-07-13 21:14:07,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006567745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:07,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:07,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:07,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3628163] [2022-07-13 21:14:07,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:07,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:07,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:07,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:07,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:07,301 INFO L87 Difference]: Start difference. First operand 8660 states and 12701 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:09,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:09,737 INFO L93 Difference]: Finished difference Result 17504 states and 26886 transitions. [2022-07-13 21:14:09,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:09,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:14:09,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:09,764 INFO L225 Difference]: With dead ends: 17504 [2022-07-13 21:14:09,765 INFO L226 Difference]: Without dead ends: 11054 [2022-07-13 21:14:09,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:14:09,780 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 1639 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1670 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:09,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1670 Valid, 1724 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:14:09,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11054 states. [2022-07-13 21:14:10,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11054 to 8660. [2022-07-13 21:14:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8660 states, 7770 states have (on average 1.4625482625482626) internal successors, (11364), 7804 states have internal predecessors, (11364), 567 states have call successors, (567), 249 states have call predecessors, (567), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2022-07-13 21:14:10,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 12684 transitions. [2022-07-13 21:14:10,788 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 12684 transitions. Word has length 189 [2022-07-13 21:14:10,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:10,788 INFO L495 AbstractCegarLoop]: Abstraction has 8660 states and 12684 transitions. [2022-07-13 21:14:10,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:10,789 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 12684 transitions. [2022-07-13 21:14:10,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:14:10,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:10,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:10,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 21:14:10,794 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:10,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:10,794 INFO L85 PathProgramCache]: Analyzing trace with hash -592121203, now seen corresponding path program 1 times [2022-07-13 21:14:10,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:10,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858141720] [2022-07-13 21:14:10,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:10,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:10,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:10,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:10,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:10,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:10,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:10,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858141720] [2022-07-13 21:14:10,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858141720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:10,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:10,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:10,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549889719] [2022-07-13 21:14:10,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:10,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:10,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:10,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:10,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:10,937 INFO L87 Difference]: Start difference. First operand 8660 states and 12684 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:13,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:13,616 INFO L93 Difference]: Finished difference Result 17486 states and 26799 transitions. [2022-07-13 21:14:13,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:13,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:14:13,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:13,639 INFO L225 Difference]: With dead ends: 17486 [2022-07-13 21:14:13,639 INFO L226 Difference]: Without dead ends: 11036 [2022-07-13 21:14:13,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:14:13,649 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 1408 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 1978 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:13,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 1978 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 21:14:13,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11036 states. [2022-07-13 21:14:14,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11036 to 8660. [2022-07-13 21:14:14,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8660 states, 7770 states have (on average 1.4603603603603603) internal successors, (11347), 7804 states have internal predecessors, (11347), 567 states have call successors, (567), 249 states have call predecessors, (567), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2022-07-13 21:14:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 12667 transitions. [2022-07-13 21:14:14,449 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 12667 transitions. Word has length 189 [2022-07-13 21:14:14,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:14,449 INFO L495 AbstractCegarLoop]: Abstraction has 8660 states and 12667 transitions. [2022-07-13 21:14:14,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:14,449 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 12667 transitions. [2022-07-13 21:14:14,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:14:14,453 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:14,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:14,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 21:14:14,454 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:14,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:14,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1203390261, now seen corresponding path program 1 times [2022-07-13 21:14:14,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:14,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411498443] [2022-07-13 21:14:14,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:14,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:14,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:14,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:14,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:14,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:14,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:14,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:14,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411498443] [2022-07-13 21:14:14,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411498443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:14,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:14,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:14,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711588837] [2022-07-13 21:14:14,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:14,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:14,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:14,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:14,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:14,593 INFO L87 Difference]: Start difference. First operand 8660 states and 12667 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:19,894 INFO L93 Difference]: Finished difference Result 25422 states and 39207 transitions. [2022-07-13 21:14:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:14:19,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:14:19,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:19,934 INFO L225 Difference]: With dead ends: 25422 [2022-07-13 21:14:19,934 INFO L226 Difference]: Without dead ends: 18972 [2022-07-13 21:14:19,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:14:19,954 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 1867 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 3390 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 3511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 3390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:19,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 3335 Invalid, 3511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 3390 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 21:14:19,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18972 states. [2022-07-13 21:14:21,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18972 to 14775. [2022-07-13 21:14:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14775 states, 13421 states have (on average 1.493852917070263) internal successors, (20049), 13471 states have internal predecessors, (20049), 919 states have call successors, (919), 345 states have call predecessors, (919), 433 states have return successors, (1283), 990 states have call predecessors, (1283), 918 states have call successors, (1283) [2022-07-13 21:14:21,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14775 states to 14775 states and 22251 transitions. [2022-07-13 21:14:21,570 INFO L78 Accepts]: Start accepts. Automaton has 14775 states and 22251 transitions. Word has length 189 [2022-07-13 21:14:21,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:21,571 INFO L495 AbstractCegarLoop]: Abstraction has 14775 states and 22251 transitions. [2022-07-13 21:14:21,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:21,571 INFO L276 IsEmpty]: Start isEmpty. Operand 14775 states and 22251 transitions. [2022-07-13 21:14:21,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:14:21,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:21,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:21,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 21:14:21,578 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:21,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:21,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1686385357, now seen corresponding path program 1 times [2022-07-13 21:14:21,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:21,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056030413] [2022-07-13 21:14:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:21,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:21,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:21,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:21,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:21,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:21,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:21,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:21,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:21,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056030413] [2022-07-13 21:14:21,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056030413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:21,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:21,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:21,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806629232] [2022-07-13 21:14:21,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:21,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:21,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:21,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:21,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:21,712 INFO L87 Difference]: Start difference. First operand 14775 states and 22251 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:31,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:31,632 INFO L93 Difference]: Finished difference Result 53661 states and 83687 transitions. [2022-07-13 21:14:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:14:31,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:14:31,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:31,720 INFO L225 Difference]: With dead ends: 53661 [2022-07-13 21:14:31,720 INFO L226 Difference]: Without dead ends: 41096 [2022-07-13 21:14:31,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:14:31,865 INFO L413 NwaCegarLoop]: 1335 mSDtfsCounter, 1995 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 3986 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 3532 SdHoareTripleChecker+Invalid, 4109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 3986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:31,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 3532 Invalid, 4109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 3986 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 21:14:31,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41096 states. [2022-07-13 21:14:34,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41096 to 26969. [2022-07-13 21:14:34,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26969 states, 24719 states have (on average 1.516768477689227) internal successors, (37493), 24801 states have internal predecessors, (37493), 1591 states have call successors, (1591), 537 states have call predecessors, (1591), 657 states have return successors, (2473), 1694 states have call predecessors, (2473), 1590 states have call successors, (2473) [2022-07-13 21:14:35,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26969 states to 26969 states and 41557 transitions. [2022-07-13 21:14:35,076 INFO L78 Accepts]: Start accepts. Automaton has 26969 states and 41557 transitions. Word has length 189 [2022-07-13 21:14:35,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:35,077 INFO L495 AbstractCegarLoop]: Abstraction has 26969 states and 41557 transitions. [2022-07-13 21:14:35,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:35,077 INFO L276 IsEmpty]: Start isEmpty. Operand 26969 states and 41557 transitions. [2022-07-13 21:14:35,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:14:35,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:35,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:35,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 21:14:35,086 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:35,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:35,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1162001073, now seen corresponding path program 1 times [2022-07-13 21:14:35,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:35,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757682374] [2022-07-13 21:14:35,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:35,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:35,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:35,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:35,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:35,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:35,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:35,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757682374] [2022-07-13 21:14:35,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757682374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:35,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:35,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:35,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511797747] [2022-07-13 21:14:35,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:35,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:35,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:35,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:35,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:35,218 INFO L87 Difference]: Start difference. First operand 26969 states and 41557 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:52,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:52,199 INFO L93 Difference]: Finished difference Result 103037 states and 162367 transitions. [2022-07-13 21:14:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:14:52,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:14:52,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:52,443 INFO L225 Difference]: With dead ends: 103037 [2022-07-13 21:14:52,443 INFO L226 Difference]: Without dead ends: 78278 [2022-07-13 21:14:52,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:14:52,511 INFO L413 NwaCegarLoop]: 1113 mSDtfsCounter, 2346 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 3356 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 3307 SdHoareTripleChecker+Invalid, 3482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 3356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:52,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2390 Valid, 3307 Invalid, 3482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 3356 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-13 21:14:52,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78278 states. [2022-07-13 21:14:59,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78278 to 51002. [2022-07-13 21:14:59,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51002 states, 46992 states have (on average 1.5299412665985699) internal successors, (71895), 47138 states have internal predecessors, (71895), 2903 states have call successors, (2903), 921 states have call predecessors, (2903), 1105 states have return successors, (5307), 3070 states have call predecessors, (5307), 2902 states have call successors, (5307) [2022-07-13 21:14:59,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51002 states to 51002 states and 80105 transitions. [2022-07-13 21:14:59,633 INFO L78 Accepts]: Start accepts. Automaton has 51002 states and 80105 transitions. Word has length 189 [2022-07-13 21:14:59,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:59,634 INFO L495 AbstractCegarLoop]: Abstraction has 51002 states and 80105 transitions. [2022-07-13 21:14:59,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 51002 states and 80105 transitions. [2022-07-13 21:14:59,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:14:59,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:59,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:59,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 21:14:59,650 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:59,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:59,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2085168499, now seen corresponding path program 1 times [2022-07-13 21:14:59,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:59,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345465236] [2022-07-13 21:14:59,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:59,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:59,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:59,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:59,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:59,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:59,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:59,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:59,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345465236] [2022-07-13 21:14:59,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345465236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:59,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:59,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:59,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448551350] [2022-07-13 21:14:59,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:59,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:59,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:59,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:59,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:59,799 INFO L87 Difference]: Start difference. First operand 51002 states and 80105 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:32,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:32,124 INFO L93 Difference]: Finished difference Result 199644 states and 318181 transitions. [2022-07-13 21:15:32,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:15:32,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:15:32,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:32,769 INFO L225 Difference]: With dead ends: 199644 [2022-07-13 21:15:32,769 INFO L226 Difference]: Without dead ends: 150852 [2022-07-13 21:15:32,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:15:32,885 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 2068 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2097 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 3753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 3594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:32,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2097 Valid, 2576 Invalid, 3753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 3594 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-13 21:15:32,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150852 states. [2022-07-13 21:15:46,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150852 to 99323. [2022-07-13 21:15:46,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99323 states, 91857 states have (on average 1.5379666220320716) internal successors, (141273), 92131 states have internal predecessors, (141273), 5463 states have call successors, (5463), 1689 states have call predecessors, (5463), 2001 states have return successors, (12369), 5758 states have call predecessors, (12369), 5462 states have call successors, (12369) [2022-07-13 21:15:46,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99323 states to 99323 states and 159105 transitions. [2022-07-13 21:15:46,632 INFO L78 Accepts]: Start accepts. Automaton has 99323 states and 159105 transitions. Word has length 189 [2022-07-13 21:15:46,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:46,633 INFO L495 AbstractCegarLoop]: Abstraction has 99323 states and 159105 transitions. [2022-07-13 21:15:46,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:46,633 INFO L276 IsEmpty]: Start isEmpty. Operand 99323 states and 159105 transitions. [2022-07-13 21:15:46,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 21:15:46,661 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:46,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:46,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 21:15:46,662 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:46,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:46,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1699306097, now seen corresponding path program 1 times [2022-07-13 21:15:46,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:46,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003323445] [2022-07-13 21:15:46,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:46,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:46,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:46,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:15:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:46,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:15:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:46,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:15:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:46,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:15:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:46,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:46,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003323445] [2022-07-13 21:15:46,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003323445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:46,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:46,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:46,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206864005] [2022-07-13 21:15:46,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:46,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:46,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:46,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:46,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:46,794 INFO L87 Difference]: Start difference. First operand 99323 states and 159105 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:10,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:10,393 INFO L93 Difference]: Finished difference Result 227696 states and 372688 transitions. [2022-07-13 21:16:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:16:10,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-13 21:16:10,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:11,152 INFO L225 Difference]: With dead ends: 227696 [2022-07-13 21:16:11,152 INFO L226 Difference]: Without dead ends: 130583 [2022-07-13 21:16:11,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:16:11,331 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 1638 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:11,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1669 Valid, 1698 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 21:16:11,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130583 states.