./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ebb73aa3b2fe06c298821e537034d0c16e316e18b31a7db411eb85fc916df11 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:51:01,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:51:01,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:51:01,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:51:01,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:51:01,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:51:01,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:51:01,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:51:01,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:51:01,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:51:01,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:51:01,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:51:01,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:51:01,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:51:01,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:51:01,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:51:01,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:51:01,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:51:01,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:51:01,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:51:01,602 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:51:01,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:51:01,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:51:01,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:51:01,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:51:01,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:51:01,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:51:01,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:51:01,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:51:01,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:51:01,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:51:01,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:51:01,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:51:01,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:51:01,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:51:01,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:51:01,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:51:01,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:51:01,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:51:01,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:51:01,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:51:01,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:51:01,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:51:01,652 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:51:01,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:51:01,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:51:01,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:51:01,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:51:01,654 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:51:01,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:51:01,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:51:01,655 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:51:01,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:51:01,657 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:51:01,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:51:01,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:51:01,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:51:01,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:51:01,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:51:01,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:51:01,658 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:51:01,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:51:01,660 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:51:01,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:51:01,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:51:01,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:51:01,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:51:01,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:51:01,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:51:01,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:51:01,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:51:01,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:51:01,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:51:01,662 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:51:01,662 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:51:01,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:51:01,663 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ebb73aa3b2fe06c298821e537034d0c16e316e18b31a7db411eb85fc916df11 [2022-07-22 20:51:01,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:51:01,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:51:01,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:51:01,942 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:51:01,943 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:51:01,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c [2022-07-22 20:51:01,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/859800f9d/80cbf4547d4a4d059fe5173add81c5c4/FLAGe50334a55 [2022-07-22 20:51:02,449 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:51:02,450 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c [2022-07-22 20:51:02,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/859800f9d/80cbf4547d4a4d059fe5173add81c5c4/FLAGe50334a55 [2022-07-22 20:51:02,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/859800f9d/80cbf4547d4a4d059fe5173add81c5c4 [2022-07-22 20:51:02,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:51:02,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:51:02,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:51:02,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:51:02,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:51:02,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:51:02" (1/1) ... [2022-07-22 20:51:02,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f977d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:02, skipping insertion in model container [2022-07-22 20:51:02,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:51:02" (1/1) ... [2022-07-22 20:51:02,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:51:02,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:51:03,019 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c[911,924] [2022-07-22 20:51:03,072 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c[8416,8429] [2022-07-22 20:51:03,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:51:03,109 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:51:03,118 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c[911,924] [2022-07-22 20:51:03,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.02.cil-1.c[8416,8429] [2022-07-22 20:51:03,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:51:03,172 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:51:03,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:03 WrapperNode [2022-07-22 20:51:03,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:51:03,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:51:03,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:51:03,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:51:03,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:03" (1/1) ... [2022-07-22 20:51:03,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:03" (1/1) ... [2022-07-22 20:51:03,222 INFO L137 Inliner]: procedures = 59, calls = 67, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 498 [2022-07-22 20:51:03,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:51:03,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:51:03,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:51:03,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:51:03,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:03" (1/1) ... [2022-07-22 20:51:03,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:03" (1/1) ... [2022-07-22 20:51:03,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:03" (1/1) ... [2022-07-22 20:51:03,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:03" (1/1) ... [2022-07-22 20:51:03,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:03" (1/1) ... [2022-07-22 20:51:03,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:03" (1/1) ... [2022-07-22 20:51:03,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:03" (1/1) ... [2022-07-22 20:51:03,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:51:03,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:51:03,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:51:03,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:51:03,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:03" (1/1) ... [2022-07-22 20:51:03,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:51:03,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:51:03,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 20:51:03,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 20:51:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:51:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 20:51:03,345 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 20:51:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-22 20:51:03,347 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-22 20:51:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-22 20:51:03,347 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-22 20:51:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-22 20:51:03,347 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-22 20:51:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-22 20:51:03,348 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-22 20:51:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-22 20:51:03,348 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-22 20:51:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-22 20:51:03,348 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-22 20:51:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-22 20:51:03,349 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-22 20:51:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-22 20:51:03,349 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-22 20:51:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-22 20:51:03,349 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-22 20:51:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-22 20:51:03,350 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-22 20:51:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:51:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-22 20:51:03,350 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-22 20:51:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-22 20:51:03,350 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-22 20:51:03,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:51:03,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:51:03,351 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-22 20:51:03,351 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-22 20:51:03,431 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:51:03,433 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:51:03,886 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-22 20:51:03,889 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-22 20:51:03,947 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:51:03,960 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:51:03,961 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-22 20:51:03,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:51:03 BoogieIcfgContainer [2022-07-22 20:51:03,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:51:03,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:51:03,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:51:03,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:51:03,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:51:02" (1/3) ... [2022-07-22 20:51:03,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7724813d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:51:03, skipping insertion in model container [2022-07-22 20:51:03,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:03" (2/3) ... [2022-07-22 20:51:03,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7724813d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:51:03, skipping insertion in model container [2022-07-22 20:51:03,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:51:03" (3/3) ... [2022-07-22 20:51:03,972 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.02.cil-1.c [2022-07-22 20:51:03,988 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:51:03,989 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:51:04,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:51:04,066 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@a3f2099, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1dedc932 [2022-07-22 20:51:04,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:51:04,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 249 states, 200 states have (on average 1.555) internal successors, (311), 206 states have internal predecessors, (311), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-07-22 20:51:04,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:51:04,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:04,086 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] [2022-07-22 20:51:04,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:04,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:04,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1783891232, now seen corresponding path program 1 times [2022-07-22 20:51:04,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:04,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356676749] [2022-07-22 20:51:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:04,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:04,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:04,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:04,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:04,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:04,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:51:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:04,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:51:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:04,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:51:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:04,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:04,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:04,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356676749] [2022-07-22 20:51:04,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356676749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:04,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:04,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:51:04,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845174278] [2022-07-22 20:51:04,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:04,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:51:04,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:04,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:51:04,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:04,455 INFO L87 Difference]: Start difference. First operand has 249 states, 200 states have (on average 1.555) internal successors, (311), 206 states have internal predecessors, (311), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:51:05,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:05,352 INFO L93 Difference]: Finished difference Result 631 states and 957 transitions. [2022-07-22 20:51:05,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:51:05,354 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-22 20:51:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:05,366 INFO L225 Difference]: With dead ends: 631 [2022-07-22 20:51:05,367 INFO L226 Difference]: Without dead ends: 390 [2022-07-22 20:51:05,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:51:05,374 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 515 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:05,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1334 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:51:05,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-07-22 20:51:05,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 351. [2022-07-22 20:51:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 282 states have (on average 1.446808510638298) internal successors, (408), 288 states have internal predecessors, (408), 45 states have call successors, (45), 21 states have call predecessors, (45), 22 states have return successors, (48), 44 states have call predecessors, (48), 43 states have call successors, (48) [2022-07-22 20:51:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 501 transitions. [2022-07-22 20:51:05,479 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 501 transitions. Word has length 65 [2022-07-22 20:51:05,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:05,481 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 501 transitions. [2022-07-22 20:51:05,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:51:05,482 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 501 transitions. [2022-07-22 20:51:05,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:51:05,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:05,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:05,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:51:05,496 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:05,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:05,500 INFO L85 PathProgramCache]: Analyzing trace with hash -832187424, now seen corresponding path program 1 times [2022-07-22 20:51:05,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:05,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793464336] [2022-07-22 20:51:05,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:05,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:05,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:05,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:05,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:05,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:05,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:51:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:05,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:51:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:05,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:51:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:05,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:05,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793464336] [2022-07-22 20:51:05,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793464336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:05,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:05,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 20:51:05,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948621532] [2022-07-22 20:51:05,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:05,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:51:05,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:05,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:51:05,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:51:05,667 INFO L87 Difference]: Start difference. First operand 351 states and 501 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 20:51:07,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:07,438 INFO L93 Difference]: Finished difference Result 1384 states and 1961 transitions. [2022-07-22 20:51:07,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 20:51:07,439 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-22 20:51:07,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:07,454 INFO L225 Difference]: With dead ends: 1384 [2022-07-22 20:51:07,454 INFO L226 Difference]: Without dead ends: 1163 [2022-07-22 20:51:07,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 20:51:07,473 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 2085 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:07,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2105 Valid, 1909 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 20:51:07,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-07-22 20:51:07,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1024. [2022-07-22 20:51:07,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 825 states have (on average 1.3903030303030304) internal successors, (1147), 839 states have internal predecessors, (1147), 116 states have call successors, (116), 74 states have call predecessors, (116), 81 states have return successors, (128), 112 states have call predecessors, (128), 114 states have call successors, (128) [2022-07-22 20:51:07,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1391 transitions. [2022-07-22 20:51:07,557 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1391 transitions. Word has length 65 [2022-07-22 20:51:07,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:07,558 INFO L495 AbstractCegarLoop]: Abstraction has 1024 states and 1391 transitions. [2022-07-22 20:51:07,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 20:51:07,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1391 transitions. [2022-07-22 20:51:07,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:51:07,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:07,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:07,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:51:07,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:07,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:07,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1785966606, now seen corresponding path program 1 times [2022-07-22 20:51:07,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:07,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177335758] [2022-07-22 20:51:07,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:07,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:07,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:07,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:07,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:07,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:07,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:51:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:07,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 20:51:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:07,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:51:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:07,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:07,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177335758] [2022-07-22 20:51:07,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177335758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:07,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:07,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:51:07,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535595191] [2022-07-22 20:51:07,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:07,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:51:07,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:07,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:51:07,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:51:07,733 INFO L87 Difference]: Start difference. First operand 1024 states and 1391 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:51:08,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:08,396 INFO L93 Difference]: Finished difference Result 2050 states and 2785 transitions. [2022-07-22 20:51:08,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:51:08,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-22 20:51:08,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:08,403 INFO L225 Difference]: With dead ends: 2050 [2022-07-22 20:51:08,403 INFO L226 Difference]: Without dead ends: 1162 [2022-07-22 20:51:08,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:51:08,407 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 266 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:08,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1505 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 20:51:08,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-07-22 20:51:08,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1054. [2022-07-22 20:51:08,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 849 states have (on average 1.375736160188457) internal successors, (1168), 863 states have internal predecessors, (1168), 116 states have call successors, (116), 74 states have call predecessors, (116), 87 states have return successors, (134), 118 states have call predecessors, (134), 114 states have call successors, (134) [2022-07-22 20:51:08,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1418 transitions. [2022-07-22 20:51:08,457 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1418 transitions. Word has length 66 [2022-07-22 20:51:08,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:08,458 INFO L495 AbstractCegarLoop]: Abstraction has 1054 states and 1418 transitions. [2022-07-22 20:51:08,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:51:08,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1418 transitions. [2022-07-22 20:51:08,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:51:08,459 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:08,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:08,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 20:51:08,460 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:08,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:08,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1479641392, now seen corresponding path program 1 times [2022-07-22 20:51:08,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:08,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354007161] [2022-07-22 20:51:08,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:08,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:08,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:08,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:08,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:08,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:08,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:51:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:08,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 20:51:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:08,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:51:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:08,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:08,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354007161] [2022-07-22 20:51:08,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354007161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:08,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:08,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 20:51:08,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876354137] [2022-07-22 20:51:08,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:08,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:51:08,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:08,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:51:08,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:51:08,551 INFO L87 Difference]: Start difference. First operand 1054 states and 1418 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 20:51:10,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:10,226 INFO L93 Difference]: Finished difference Result 3392 states and 4605 transitions. [2022-07-22 20:51:10,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 20:51:10,227 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-07-22 20:51:10,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:10,233 INFO L225 Difference]: With dead ends: 3392 [2022-07-22 20:51:10,233 INFO L226 Difference]: Without dead ends: 1297 [2022-07-22 20:51:10,238 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 [2022-07-22 20:51:10,239 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 2436 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2456 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 676 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:10,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2456 Valid, 1691 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [676 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:51:10,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2022-07-22 20:51:10,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1142. [2022-07-22 20:51:10,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 902 states have (on average 1.335920177383592) internal successors, (1205), 916 states have internal predecessors, (1205), 136 states have call successors, (136), 88 states have call predecessors, (136), 102 states have return successors, (155), 139 states have call predecessors, (155), 134 states have call successors, (155) [2022-07-22 20:51:10,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1496 transitions. [2022-07-22 20:51:10,286 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1496 transitions. Word has length 66 [2022-07-22 20:51:10,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:10,287 INFO L495 AbstractCegarLoop]: Abstraction has 1142 states and 1496 transitions. [2022-07-22 20:51:10,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 20:51:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1496 transitions. [2022-07-22 20:51:10,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 20:51:10,288 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:10,288 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] [2022-07-22 20:51:10,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 20:51:10,289 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:10,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:10,289 INFO L85 PathProgramCache]: Analyzing trace with hash 864637062, now seen corresponding path program 1 times [2022-07-22 20:51:10,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:10,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387748574] [2022-07-22 20:51:10,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:10,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:10,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:10,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:10,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:10,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:10,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:10,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:10,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387748574] [2022-07-22 20:51:10,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387748574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:10,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:10,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:51:10,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916050747] [2022-07-22 20:51:10,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:10,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:51:10,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:10,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:51:10,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:51:10,349 INFO L87 Difference]: Start difference. First operand 1142 states and 1496 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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) [2022-07-22 20:51:11,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:11,058 INFO L93 Difference]: Finished difference Result 1438 states and 1943 transitions. [2022-07-22 20:51:11,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:51:11,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 68 [2022-07-22 20:51:11,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:11,064 INFO L225 Difference]: With dead ends: 1438 [2022-07-22 20:51:11,064 INFO L226 Difference]: Without dead ends: 1321 [2022-07-22 20:51:11,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:51:11,069 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 648 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:11,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 883 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:51:11,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2022-07-22 20:51:11,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1258. [2022-07-22 20:51:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1000 states have (on average 1.351) internal successors, (1351), 1015 states have internal predecessors, (1351), 147 states have call successors, (147), 94 states have call predecessors, (147), 109 states have return successors, (169), 150 states have call predecessors, (169), 145 states have call successors, (169) [2022-07-22 20:51:11,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1667 transitions. [2022-07-22 20:51:11,129 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1667 transitions. Word has length 68 [2022-07-22 20:51:11,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:11,130 INFO L495 AbstractCegarLoop]: Abstraction has 1258 states and 1667 transitions. [2022-07-22 20:51:11,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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) [2022-07-22 20:51:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1667 transitions. [2022-07-22 20:51:11,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 20:51:11,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:11,131 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] [2022-07-22 20:51:11,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 20:51:11,132 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:11,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:11,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2043544824, now seen corresponding path program 1 times [2022-07-22 20:51:11,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:11,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080152426] [2022-07-22 20:51:11,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:11,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:11,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:11,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:11,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:11,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:11,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:11,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080152426] [2022-07-22 20:51:11,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080152426] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:11,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:11,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:51:11,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771974531] [2022-07-22 20:51:11,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:11,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:51:11,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:11,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:51:11,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:51:11,243 INFO L87 Difference]: Start difference. First operand 1258 states and 1667 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 20:51:12,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:12,141 INFO L93 Difference]: Finished difference Result 1701 states and 2327 transitions. [2022-07-22 20:51:12,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:51:12,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-22 20:51:12,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:12,149 INFO L225 Difference]: With dead ends: 1701 [2022-07-22 20:51:12,149 INFO L226 Difference]: Without dead ends: 1468 [2022-07-22 20:51:12,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:51:12,154 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 642 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:12,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1270 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:51:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2022-07-22 20:51:12,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1367. [2022-07-22 20:51:12,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1091 states have (on average 1.3593033913840513) internal successors, (1483), 1107 states have internal predecessors, (1483), 158 states have call successors, (158), 100 states have call predecessors, (158), 116 states have return successors, (182), 162 states have call predecessors, (182), 156 states have call successors, (182) [2022-07-22 20:51:12,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1823 transitions. [2022-07-22 20:51:12,215 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1823 transitions. Word has length 68 [2022-07-22 20:51:12,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:12,215 INFO L495 AbstractCegarLoop]: Abstraction has 1367 states and 1823 transitions. [2022-07-22 20:51:12,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 20:51:12,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1823 transitions. [2022-07-22 20:51:12,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 20:51:12,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:12,217 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] [2022-07-22 20:51:12,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 20:51:12,217 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:12,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:12,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1167525818, now seen corresponding path program 1 times [2022-07-22 20:51:12,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:12,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869345465] [2022-07-22 20:51:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:12,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:12,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:12,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:12,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:12,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:12,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:12,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869345465] [2022-07-22 20:51:12,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869345465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:12,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:12,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:51:12,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088044719] [2022-07-22 20:51:12,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:12,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:51:12,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:12,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:51:12,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:51:12,298 INFO L87 Difference]: Start difference. First operand 1367 states and 1823 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 20:51:12,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:12,811 INFO L93 Difference]: Finished difference Result 1808 states and 2485 transitions. [2022-07-22 20:51:12,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:51:12,812 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-22 20:51:12,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:12,818 INFO L225 Difference]: With dead ends: 1808 [2022-07-22 20:51:12,818 INFO L226 Difference]: Without dead ends: 1466 [2022-07-22 20:51:12,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:51:12,820 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 644 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:12,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 716 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:51:12,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2022-07-22 20:51:12,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1367. [2022-07-22 20:51:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1091 states have (on average 1.3565536205316224) internal successors, (1480), 1107 states have internal predecessors, (1480), 158 states have call successors, (158), 100 states have call predecessors, (158), 116 states have return successors, (182), 162 states have call predecessors, (182), 156 states have call successors, (182) [2022-07-22 20:51:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1820 transitions. [2022-07-22 20:51:12,887 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1820 transitions. Word has length 68 [2022-07-22 20:51:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:12,888 INFO L495 AbstractCegarLoop]: Abstraction has 1367 states and 1820 transitions. [2022-07-22 20:51:12,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 20:51:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1820 transitions. [2022-07-22 20:51:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 20:51:12,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:12,889 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, 1, 1, 1] [2022-07-22 20:51:12,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 20:51:12,890 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:12,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:12,890 INFO L85 PathProgramCache]: Analyzing trace with hash 370814212, now seen corresponding path program 1 times [2022-07-22 20:51:12,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:12,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921805688] [2022-07-22 20:51:12,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:12,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:12,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:12,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:12,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:12,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:12,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:12,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:12,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921805688] [2022-07-22 20:51:12,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921805688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:12,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:12,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:51:12,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155183201] [2022-07-22 20:51:12,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:12,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:51:12,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:12,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:51:12,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:51:12,953 INFO L87 Difference]: Start difference. First operand 1367 states and 1820 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 20:51:13,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:13,853 INFO L93 Difference]: Finished difference Result 2132 states and 2941 transitions. [2022-07-22 20:51:13,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:51:13,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-22 20:51:13,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:13,864 INFO L225 Difference]: With dead ends: 2132 [2022-07-22 20:51:13,864 INFO L226 Difference]: Without dead ends: 1790 [2022-07-22 20:51:13,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:51:13,866 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 685 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:13,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 1238 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:51:13,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2022-07-22 20:51:13,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1576. [2022-07-22 20:51:13,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1266 states have (on average 1.3688783570300158) internal successors, (1733), 1284 states have internal predecessors, (1733), 178 states have call successors, (178), 112 states have call predecessors, (178), 130 states have return successors, (210), 184 states have call predecessors, (210), 176 states have call successors, (210) [2022-07-22 20:51:13,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2121 transitions. [2022-07-22 20:51:13,950 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2121 transitions. Word has length 68 [2022-07-22 20:51:13,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:13,950 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 2121 transitions. [2022-07-22 20:51:13,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 20:51:13,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2121 transitions. [2022-07-22 20:51:13,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 20:51:13,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:13,952 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] [2022-07-22 20:51:13,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 20:51:13,953 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:13,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:13,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1657771898, now seen corresponding path program 1 times [2022-07-22 20:51:13,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:13,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606447368] [2022-07-22 20:51:13,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:13,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:13,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:13,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:14,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:14,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:14,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:14,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:14,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606447368] [2022-07-22 20:51:14,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606447368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:14,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:14,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:51:14,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588239870] [2022-07-22 20:51:14,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:14,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:51:14,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:14,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:51:14,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:51:14,019 INFO L87 Difference]: Start difference. First operand 1576 states and 2121 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 20:51:14,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:14,979 INFO L93 Difference]: Finished difference Result 2835 states and 3948 transitions. [2022-07-22 20:51:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:51:14,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-22 20:51:14,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:14,989 INFO L225 Difference]: With dead ends: 2835 [2022-07-22 20:51:14,989 INFO L226 Difference]: Without dead ends: 2284 [2022-07-22 20:51:14,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:51:14,992 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 631 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:14,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1250 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:51:14,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2022-07-22 20:51:15,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 1997. [2022-07-22 20:51:15,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1621 states have (on average 1.3861813695249845) internal successors, (2247), 1643 states have internal predecessors, (2247), 216 states have call successors, (216), 136 states have call predecessors, (216), 158 states have return successors, (270), 226 states have call predecessors, (270), 214 states have call successors, (270) [2022-07-22 20:51:15,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 2733 transitions. [2022-07-22 20:51:15,088 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 2733 transitions. Word has length 68 [2022-07-22 20:51:15,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:15,089 INFO L495 AbstractCegarLoop]: Abstraction has 1997 states and 2733 transitions. [2022-07-22 20:51:15,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 20:51:15,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 2733 transitions. [2022-07-22 20:51:15,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 20:51:15,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:15,091 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] [2022-07-22 20:51:15,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 20:51:15,091 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:15,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:15,091 INFO L85 PathProgramCache]: Analyzing trace with hash -2138852156, now seen corresponding path program 1 times [2022-07-22 20:51:15,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:15,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574463081] [2022-07-22 20:51:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:15,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:15,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:15,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:15,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:15,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:15,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:15,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:15,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574463081] [2022-07-22 20:51:15,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574463081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:15,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:15,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:51:15,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009481170] [2022-07-22 20:51:15,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:15,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:51:15,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:15,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:51:15,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:51:15,188 INFO L87 Difference]: Start difference. First operand 1997 states and 2733 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 20:51:15,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:15,946 INFO L93 Difference]: Finished difference Result 3506 states and 4960 transitions. [2022-07-22 20:51:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:51:15,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-22 20:51:15,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:15,967 INFO L225 Difference]: With dead ends: 3506 [2022-07-22 20:51:15,968 INFO L226 Difference]: Without dead ends: 2535 [2022-07-22 20:51:15,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-22 20:51:15,972 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 373 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:15,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 1109 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 20:51:15,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2022-07-22 20:51:16,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 2024. [2022-07-22 20:51:16,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 1648 states have (on average 1.3798543689320388) internal successors, (2274), 1670 states have internal predecessors, (2274), 216 states have call successors, (216), 136 states have call predecessors, (216), 158 states have return successors, (270), 226 states have call predecessors, (270), 214 states have call successors, (270) [2022-07-22 20:51:16,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2760 transitions. [2022-07-22 20:51:16,097 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2760 transitions. Word has length 68 [2022-07-22 20:51:16,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:16,097 INFO L495 AbstractCegarLoop]: Abstraction has 2024 states and 2760 transitions. [2022-07-22 20:51:16,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 20:51:16,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2760 transitions. [2022-07-22 20:51:16,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 20:51:16,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:16,099 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] [2022-07-22 20:51:16,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 20:51:16,100 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:16,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:16,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1715205434, now seen corresponding path program 1 times [2022-07-22 20:51:16,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:16,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562441910] [2022-07-22 20:51:16,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:16,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:16,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:16,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:16,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:16,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:16,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:16,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:16,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562441910] [2022-07-22 20:51:16,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562441910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:16,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:16,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:51:16,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261880917] [2022-07-22 20:51:16,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:16,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:51:16,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:16,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:51:16,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:51:16,217 INFO L87 Difference]: Start difference. First operand 2024 states and 2760 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 20:51:17,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:17,549 INFO L93 Difference]: Finished difference Result 5491 states and 7964 transitions. [2022-07-22 20:51:17,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 20:51:17,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-22 20:51:17,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:17,587 INFO L225 Difference]: With dead ends: 5491 [2022-07-22 20:51:17,588 INFO L226 Difference]: Without dead ends: 4493 [2022-07-22 20:51:17,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-22 20:51:17,592 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 1409 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:17,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 1105 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:51:17,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2022-07-22 20:51:17,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 3942. [2022-07-22 20:51:17,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3244 states have (on average 1.3982737361282367) internal successors, (4536), 3297 states have internal predecessors, (4536), 408 states have call successors, (408), 250 states have call predecessors, (408), 288 states have return successors, (579), 403 states have call predecessors, (579), 406 states have call successors, (579) [2022-07-22 20:51:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5523 transitions. [2022-07-22 20:51:17,858 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5523 transitions. Word has length 68 [2022-07-22 20:51:17,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:17,858 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 5523 transitions. [2022-07-22 20:51:17,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 20:51:17,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5523 transitions. [2022-07-22 20:51:17,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:51:17,864 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:17,864 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:17,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 20:51:17,865 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:17,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:17,866 INFO L85 PathProgramCache]: Analyzing trace with hash 163766987, now seen corresponding path program 1 times [2022-07-22 20:51:17,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:17,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184447267] [2022-07-22 20:51:17,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:17,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:17,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:17,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:17,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:17,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:51:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:17,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:51:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:17,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:51:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:17,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:51:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:17,987 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:51:17,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:17,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184447267] [2022-07-22 20:51:17,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184447267] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:17,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:17,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:51:17,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847529907] [2022-07-22 20:51:17,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:17,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:51:17,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:17,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:51:17,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:51:17,990 INFO L87 Difference]: Start difference. First operand 3942 states and 5523 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:51:18,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:18,720 INFO L93 Difference]: Finished difference Result 5119 states and 7074 transitions. [2022-07-22 20:51:18,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:51:18,721 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-07-22 20:51:18,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:18,737 INFO L225 Difference]: With dead ends: 5119 [2022-07-22 20:51:18,737 INFO L226 Difference]: Without dead ends: 4113 [2022-07-22 20:51:18,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:51:18,741 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 259 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:18,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1450 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:51:18,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4113 states. [2022-07-22 20:51:18,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4113 to 3982. [2022-07-22 20:51:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3982 states, 3276 states have (on average 1.3934676434676434) internal successors, (4565), 3329 states have internal predecessors, (4565), 408 states have call successors, (408), 250 states have call predecessors, (408), 296 states have return successors, (587), 411 states have call predecessors, (587), 406 states have call successors, (587) [2022-07-22 20:51:18,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3982 states to 3982 states and 5560 transitions. [2022-07-22 20:51:18,983 INFO L78 Accepts]: Start accepts. Automaton has 3982 states and 5560 transitions. Word has length 91 [2022-07-22 20:51:18,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:18,983 INFO L495 AbstractCegarLoop]: Abstraction has 3982 states and 5560 transitions. [2022-07-22 20:51:18,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:51:18,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3982 states and 5560 transitions. [2022-07-22 20:51:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:51:18,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:18,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:18,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 20:51:18,989 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:18,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:18,990 INFO L85 PathProgramCache]: Analyzing trace with hash 607667661, now seen corresponding path program 1 times [2022-07-22 20:51:18,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:18,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361615477] [2022-07-22 20:51:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:18,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:19,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:19,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:19,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:19,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:51:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:19,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:51:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:19,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:51:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:19,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:51:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:19,105 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:51:19,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:19,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361615477] [2022-07-22 20:51:19,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361615477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:19,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:19,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:51:19,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048522614] [2022-07-22 20:51:19,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:19,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:51:19,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:19,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:51:19,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:19,108 INFO L87 Difference]: Start difference. First operand 3982 states and 5560 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:51:19,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:19,956 INFO L93 Difference]: Finished difference Result 6020 states and 8165 transitions. [2022-07-22 20:51:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 20:51:19,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-22 20:51:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:19,985 INFO L225 Difference]: With dead ends: 6020 [2022-07-22 20:51:19,985 INFO L226 Difference]: Without dead ends: 4975 [2022-07-22 20:51:19,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-22 20:51:19,990 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 674 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:19,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1245 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 20:51:19,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4975 states. [2022-07-22 20:51:20,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4975 to 4659. [2022-07-22 20:51:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 3805 states have (on average 1.3742444152431013) internal successors, (5229), 3871 states have internal predecessors, (5229), 484 states have call successors, (484), 303 states have call predecessors, (484), 368 states have return successors, (700), 494 states have call predecessors, (700), 482 states have call successors, (700) [2022-07-22 20:51:20,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 6413 transitions. [2022-07-22 20:51:20,322 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 6413 transitions. Word has length 91 [2022-07-22 20:51:20,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:20,323 INFO L495 AbstractCegarLoop]: Abstraction has 4659 states and 6413 transitions. [2022-07-22 20:51:20,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:51:20,323 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 6413 transitions. [2022-07-22 20:51:20,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:51:20,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:20,327 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:20,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 20:51:20,327 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:20,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:20,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1748137589, now seen corresponding path program 1 times [2022-07-22 20:51:20,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:20,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401842991] [2022-07-22 20:51:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:20,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:20,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:20,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:20,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:20,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:20,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:51:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:20,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:51:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:20,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:51:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:20,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:51:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 20:51:20,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:20,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401842991] [2022-07-22 20:51:20,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401842991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:20,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:20,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:51:20,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967865926] [2022-07-22 20:51:20,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:20,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:51:20,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:20,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:51:20,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:51:20,413 INFO L87 Difference]: Start difference. First operand 4659 states and 6413 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 20:51:21,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:21,035 INFO L93 Difference]: Finished difference Result 8318 states and 11195 transitions. [2022-07-22 20:51:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:51:21,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-22 20:51:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:21,068 INFO L225 Difference]: With dead ends: 8318 [2022-07-22 20:51:21,069 INFO L226 Difference]: Without dead ends: 6598 [2022-07-22 20:51:21,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:51:21,077 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 742 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:21,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 849 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:51:21,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6598 states. [2022-07-22 20:51:21,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6598 to 6378. [2022-07-22 20:51:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6378 states, 5143 states have (on average 1.3400738868364768) internal successors, (6892), 5245 states have internal predecessors, (6892), 677 states have call successors, (677), 437 states have call predecessors, (677), 556 states have return successors, (1040), 707 states have call predecessors, (1040), 675 states have call successors, (1040) [2022-07-22 20:51:21,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6378 states to 6378 states and 8609 transitions. [2022-07-22 20:51:21,463 INFO L78 Accepts]: Start accepts. Automaton has 6378 states and 8609 transitions. Word has length 91 [2022-07-22 20:51:21,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:21,465 INFO L495 AbstractCegarLoop]: Abstraction has 6378 states and 8609 transitions. [2022-07-22 20:51:21,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 20:51:21,465 INFO L276 IsEmpty]: Start isEmpty. Operand 6378 states and 8609 transitions. [2022-07-22 20:51:21,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:51:21,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:21,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:21,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 20:51:21,476 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:21,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:21,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1488991629, now seen corresponding path program 1 times [2022-07-22 20:51:21,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:21,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314879235] [2022-07-22 20:51:21,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:21,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:21,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:21,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:21,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:21,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:21,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:51:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:21,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:51:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:21,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:51:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:21,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:51:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:51:21,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:21,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314879235] [2022-07-22 20:51:21,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314879235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:21,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:21,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:51:21,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679848452] [2022-07-22 20:51:21,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:21,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:51:21,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:21,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:51:21,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:51:21,534 INFO L87 Difference]: Start difference. First operand 6378 states and 8609 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:51:21,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:21,939 INFO L93 Difference]: Finished difference Result 8216 states and 10912 transitions. [2022-07-22 20:51:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 20:51:21,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-22 20:51:21,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:21,956 INFO L225 Difference]: With dead ends: 8216 [2022-07-22 20:51:21,957 INFO L226 Difference]: Without dead ends: 4777 [2022-07-22 20:51:21,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:51:21,965 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 491 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:21,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 693 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:51:21,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2022-07-22 20:51:22,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4659. [2022-07-22 20:51:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 3805 states have (on average 1.3629434954007884) internal successors, (5186), 3871 states have internal predecessors, (5186), 484 states have call successors, (484), 303 states have call predecessors, (484), 368 states have return successors, (700), 494 states have call predecessors, (700), 482 states have call successors, (700) [2022-07-22 20:51:22,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 6370 transitions. [2022-07-22 20:51:22,219 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 6370 transitions. Word has length 91 [2022-07-22 20:51:22,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:22,219 INFO L495 AbstractCegarLoop]: Abstraction has 4659 states and 6370 transitions. [2022-07-22 20:51:22,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:51:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 6370 transitions. [2022-07-22 20:51:22,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 20:51:22,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:22,224 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:22,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 20:51:22,224 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:22,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:22,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1449992458, now seen corresponding path program 1 times [2022-07-22 20:51:22,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:22,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513021248] [2022-07-22 20:51:22,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:22,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:22,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:22,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:22,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:22,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:22,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:51:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:22,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:51:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:22,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:51:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:22,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 20:51:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:22,320 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:51:22,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:22,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513021248] [2022-07-22 20:51:22,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513021248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:22,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:22,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:51:22,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526243710] [2022-07-22 20:51:22,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:22,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:51:22,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:22,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:51:22,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:51:22,325 INFO L87 Difference]: Start difference. First operand 4659 states and 6370 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:51:23,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:23,586 INFO L93 Difference]: Finished difference Result 7485 states and 9972 transitions. [2022-07-22 20:51:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 20:51:23,586 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-07-22 20:51:23,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:23,604 INFO L225 Difference]: With dead ends: 7485 [2022-07-22 20:51:23,605 INFO L226 Difference]: Without dead ends: 5458 [2022-07-22 20:51:23,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-22 20:51:23,612 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1758 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:23,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1791 Valid, 1132 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:51:23,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5458 states. [2022-07-22 20:51:23,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5458 to 5281. [2022-07-22 20:51:23,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 4271 states have (on average 1.338562397564973) internal successors, (5717), 4345 states have internal predecessors, (5717), 562 states have call successors, (562), 351 states have call predecessors, (562), 446 states have return successors, (833), 594 states have call predecessors, (833), 560 states have call successors, (833) [2022-07-22 20:51:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 7112 transitions. [2022-07-22 20:51:23,939 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 7112 transitions. Word has length 92 [2022-07-22 20:51:23,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:23,940 INFO L495 AbstractCegarLoop]: Abstraction has 5281 states and 7112 transitions. [2022-07-22 20:51:23,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:51:23,940 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 7112 transitions. [2022-07-22 20:51:23,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 20:51:23,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:23,946 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:51:23,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 20:51:23,946 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:23,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:23,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1292747492, now seen corresponding path program 1 times [2022-07-22 20:51:23,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:23,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017196685] [2022-07-22 20:51:23,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:23,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:23,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:23,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:23,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:24,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:24,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 20:51:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:24,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:24,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:51:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 20:51:24,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:24,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017196685] [2022-07-22 20:51:24,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017196685] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:51:24,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087908773] [2022-07-22 20:51:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:24,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:24,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:51:24,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:51:24,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 20:51:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:24,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:51:24,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:51:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 20:51:24,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:51:24,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087908773] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:24,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:51:24,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 20:51:24,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079429685] [2022-07-22 20:51:24,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:24,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:51:24,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:24,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:51:24,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:24,215 INFO L87 Difference]: Start difference. First operand 5281 states and 7112 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 20:51:24,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:24,651 INFO L93 Difference]: Finished difference Result 10972 states and 15368 transitions. [2022-07-22 20:51:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:51:24,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 110 [2022-07-22 20:51:24,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:24,668 INFO L225 Difference]: With dead ends: 10972 [2022-07-22 20:51:24,668 INFO L226 Difference]: Without dead ends: 5811 [2022-07-22 20:51:24,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:24,680 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 153 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:24,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 805 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:51:24,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2022-07-22 20:51:24,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 5811. [2022-07-22 20:51:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5811 states, 4718 states have (on average 1.3452734209410768) internal successors, (6347), 4796 states have internal predecessors, (6347), 611 states have call successors, (611), 381 states have call predecessors, (611), 480 states have return successors, (911), 643 states have call predecessors, (911), 609 states have call successors, (911) [2022-07-22 20:51:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5811 states to 5811 states and 7869 transitions. [2022-07-22 20:51:24,926 INFO L78 Accepts]: Start accepts. Automaton has 5811 states and 7869 transitions. Word has length 110 [2022-07-22 20:51:24,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:24,926 INFO L495 AbstractCegarLoop]: Abstraction has 5811 states and 7869 transitions. [2022-07-22 20:51:24,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 20:51:24,927 INFO L276 IsEmpty]: Start isEmpty. Operand 5811 states and 7869 transitions. [2022-07-22 20:51:24,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-22 20:51:24,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:24,936 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:24,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 20:51:25,151 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,SelfDestructingSolverStorable16 [2022-07-22 20:51:25,151 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:25,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:25,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2129974432, now seen corresponding path program 1 times [2022-07-22 20:51:25,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:25,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827103958] [2022-07-22 20:51:25,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:25,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:25,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:25,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:25,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:25,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:25,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 20:51:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:25,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:25,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 20:51:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:25,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:25,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 20:51:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 20:51:25,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:25,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827103958] [2022-07-22 20:51:25,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827103958] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:51:25,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528746089] [2022-07-22 20:51:25,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:25,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:25,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:51:25,238 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) [2022-07-22 20:51:25,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 20:51:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:25,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:51:25,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:51:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 20:51:25,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:51:25,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528746089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:25,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:51:25,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 20:51:25,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006596628] [2022-07-22 20:51:25,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:25,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:51:25,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:25,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:51:25,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:25,472 INFO L87 Difference]: Start difference. First operand 5811 states and 7869 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 20:51:25,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:25,904 INFO L93 Difference]: Finished difference Result 12513 states and 17650 transitions. [2022-07-22 20:51:25,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:51:25,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2022-07-22 20:51:25,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:25,935 INFO L225 Difference]: With dead ends: 12513 [2022-07-22 20:51:25,935 INFO L226 Difference]: Without dead ends: 9067 [2022-07-22 20:51:25,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:25,951 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 240 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:25,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 494 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:51:25,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9067 states. [2022-07-22 20:51:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9067 to 8999. [2022-07-22 20:51:26,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8999 states, 7396 states have (on average 1.3716873985938345) internal successors, (10145), 7517 states have internal predecessors, (10145), 903 states have call successors, (903), 571 states have call predecessors, (903), 698 states have return successors, (1355), 920 states have call predecessors, (1355), 901 states have call successors, (1355) [2022-07-22 20:51:26,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8999 states to 8999 states and 12403 transitions. [2022-07-22 20:51:26,561 INFO L78 Accepts]: Start accepts. Automaton has 8999 states and 12403 transitions. Word has length 142 [2022-07-22 20:51:26,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:26,562 INFO L495 AbstractCegarLoop]: Abstraction has 8999 states and 12403 transitions. [2022-07-22 20:51:26,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 20:51:26,562 INFO L276 IsEmpty]: Start isEmpty. Operand 8999 states and 12403 transitions. [2022-07-22 20:51:26,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-22 20:51:26,578 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:26,578 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:26,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 20:51:26,795 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,SelfDestructingSolverStorable17 [2022-07-22 20:51:26,796 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:26,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:26,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1310340904, now seen corresponding path program 1 times [2022-07-22 20:51:26,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:26,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107624122] [2022-07-22 20:51:26,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:26,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:26,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:26,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:26,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:26,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:26,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 20:51:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:26,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:26,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 20:51:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:26,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:26,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 20:51:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 20:51:26,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:26,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107624122] [2022-07-22 20:51:26,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107624122] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:51:26,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024150672] [2022-07-22 20:51:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:26,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:26,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:51:26,898 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) [2022-07-22 20:51:26,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 20:51:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:27,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:51:27,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:51:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 20:51:27,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:51:27,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024150672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:27,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:51:27,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 20:51:27,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308106374] [2022-07-22 20:51:27,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:27,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:51:27,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:27,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:51:27,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:27,125 INFO L87 Difference]: Start difference. First operand 8999 states and 12403 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 20:51:27,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:27,711 INFO L93 Difference]: Finished difference Result 16231 states and 22959 transitions. [2022-07-22 20:51:27,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:51:27,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2022-07-22 20:51:27,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:27,746 INFO L225 Difference]: With dead ends: 16231 [2022-07-22 20:51:27,746 INFO L226 Difference]: Without dead ends: 12073 [2022-07-22 20:51:27,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:27,760 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 241 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:27,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 502 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:51:27,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12073 states. [2022-07-22 20:51:28,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12073 to 11975. [2022-07-22 20:51:28,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11975 states, 9897 states have (on average 1.3837526523188846) internal successors, (13695), 10052 states have internal predecessors, (13695), 1179 states have call successors, (1179), 746 states have call predecessors, (1179), 897 states have return successors, (1750), 1186 states have call predecessors, (1750), 1177 states have call successors, (1750) [2022-07-22 20:51:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11975 states to 11975 states and 16624 transitions. [2022-07-22 20:51:28,351 INFO L78 Accepts]: Start accepts. Automaton has 11975 states and 16624 transitions. Word has length 142 [2022-07-22 20:51:28,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:28,352 INFO L495 AbstractCegarLoop]: Abstraction has 11975 states and 16624 transitions. [2022-07-22 20:51:28,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 20:51:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 11975 states and 16624 transitions. [2022-07-22 20:51:28,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 20:51:28,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:28,370 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:28,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 20:51:28,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:28,595 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:28,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:28,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1742334647, now seen corresponding path program 1 times [2022-07-22 20:51:28,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:28,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704841991] [2022-07-22 20:51:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:28,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:51:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:51:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:51:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 20:51:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 20:51:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 20:51:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:51:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:51:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 20:51:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:51:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:51:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 20:51:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-22 20:51:28,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:28,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704841991] [2022-07-22 20:51:28,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704841991] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:51:28,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145592214] [2022-07-22 20:51:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:28,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:28,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:51:28,788 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:51:28,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 20:51:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:28,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:51:28,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:51:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 20:51:29,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:51:29,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145592214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:29,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:51:29,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-22 20:51:29,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072960394] [2022-07-22 20:51:29,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:29,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:51:29,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:29,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:51:29,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:51:29,005 INFO L87 Difference]: Start difference. First operand 11975 states and 16624 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 20:51:29,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:29,581 INFO L93 Difference]: Finished difference Result 16300 states and 21939 transitions. [2022-07-22 20:51:29,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:51:29,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2022-07-22 20:51:29,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:29,630 INFO L225 Difference]: With dead ends: 16300 [2022-07-22 20:51:29,630 INFO L226 Difference]: Without dead ends: 14112 [2022-07-22 20:51:29,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:51:29,650 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 61 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:29,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 647 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:51:29,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14112 states. [2022-07-22 20:51:30,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14112 to 14067. [2022-07-22 20:51:30,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14067 states, 11522 states have (on average 1.3576636000694324) internal successors, (15643), 11706 states have internal predecessors, (15643), 1413 states have call successors, (1413), 928 states have call predecessors, (1413), 1130 states have return successors, (2057), 1442 states have call predecessors, (2057), 1411 states have call successors, (2057) [2022-07-22 20:51:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14067 states to 14067 states and 19113 transitions. [2022-07-22 20:51:30,423 INFO L78 Accepts]: Start accepts. Automaton has 14067 states and 19113 transitions. Word has length 163 [2022-07-22 20:51:30,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:30,424 INFO L495 AbstractCegarLoop]: Abstraction has 14067 states and 19113 transitions. [2022-07-22 20:51:30,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 20:51:30,424 INFO L276 IsEmpty]: Start isEmpty. Operand 14067 states and 19113 transitions. [2022-07-22 20:51:30,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-22 20:51:30,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:30,443 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 20:51:30,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 20:51:30,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:30,668 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:30,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:30,668 INFO L85 PathProgramCache]: Analyzing trace with hash -268333173, now seen corresponding path program 1 times [2022-07-22 20:51:30,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:30,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818534516] [2022-07-22 20:51:30,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:30,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:30,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:30,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:30,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:30,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:30,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:30,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 20:51:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:30,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 20:51:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:30,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:30,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 20:51:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:30,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:30,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 20:51:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:30,755 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-22 20:51:30,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:30,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818534516] [2022-07-22 20:51:30,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818534516] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:51:30,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081781014] [2022-07-22 20:51:30,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:30,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:30,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:51:30,758 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:51:30,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 20:51:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:30,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:51:30,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:51:30,959 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:51:30,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:51:30,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081781014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:30,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:51:30,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 20:51:30,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468888767] [2022-07-22 20:51:30,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:30,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:51:30,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:30,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:51:30,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:30,962 INFO L87 Difference]: Start difference. First operand 14067 states and 19113 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 20:51:31,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:31,754 INFO L93 Difference]: Finished difference Result 22835 states and 31619 transitions. [2022-07-22 20:51:31,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:51:31,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 159 [2022-07-22 20:51:31,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:31,810 INFO L225 Difference]: With dead ends: 22835 [2022-07-22 20:51:31,810 INFO L226 Difference]: Without dead ends: 13226 [2022-07-22 20:51:31,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:31,843 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 260 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:31,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 357 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:51:31,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13226 states. [2022-07-22 20:51:32,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13226 to 13226. [2022-07-22 20:51:32,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13226 states, 10886 states have (on average 1.3172882601506521) internal successors, (14340), 11034 states have internal predecessors, (14340), 1261 states have call successors, (1261), 891 states have call predecessors, (1261), 1077 states have return successors, (1782), 1310 states have call predecessors, (1782), 1259 states have call successors, (1782) [2022-07-22 20:51:32,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13226 states to 13226 states and 17383 transitions. [2022-07-22 20:51:32,704 INFO L78 Accepts]: Start accepts. Automaton has 13226 states and 17383 transitions. Word has length 159 [2022-07-22 20:51:32,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:32,704 INFO L495 AbstractCegarLoop]: Abstraction has 13226 states and 17383 transitions. [2022-07-22 20:51:32,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 20:51:32,704 INFO L276 IsEmpty]: Start isEmpty. Operand 13226 states and 17383 transitions. [2022-07-22 20:51:32,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-22 20:51:32,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:32,721 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 20:51:32,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 20:51:32,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:32,936 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:32,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:32,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1542492939, now seen corresponding path program 1 times [2022-07-22 20:51:32,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:32,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223175515] [2022-07-22 20:51:32,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:32,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:32,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:32,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:32,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:33,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:33,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:33,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 20:51:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:33,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 20:51:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:33,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:33,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 20:51:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:33,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 20:51:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-22 20:51:33,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:33,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223175515] [2022-07-22 20:51:33,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223175515] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:51:33,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381826910] [2022-07-22 20:51:33,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:33,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:33,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:51:33,019 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:51:33,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 20:51:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:33,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 20:51:33,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:51:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-22 20:51:33,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:51:33,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381826910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:33,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:51:33,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 20:51:33,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926433661] [2022-07-22 20:51:33,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:33,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:51:33,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:33,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:51:33,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:33,140 INFO L87 Difference]: Start difference. First operand 13226 states and 17383 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 20:51:33,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:33,796 INFO L93 Difference]: Finished difference Result 22770 states and 30332 transitions. [2022-07-22 20:51:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:51:33,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 159 [2022-07-22 20:51:33,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:33,840 INFO L225 Difference]: With dead ends: 22770 [2022-07-22 20:51:33,840 INFO L226 Difference]: Without dead ends: 14002 [2022-07-22 20:51:33,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:33,863 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 299 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:33,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 503 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:51:33,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14002 states. [2022-07-22 20:51:34,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14002 to 13857. [2022-07-22 20:51:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13857 states, 11476 states have (on average 1.294963401882189) internal successors, (14861), 11619 states have internal predecessors, (14861), 1260 states have call successors, (1260), 930 states have call predecessors, (1260), 1119 states have return successors, (1767), 1317 states have call predecessors, (1767), 1258 states have call successors, (1767) [2022-07-22 20:51:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13857 states to 13857 states and 17888 transitions. [2022-07-22 20:51:34,737 INFO L78 Accepts]: Start accepts. Automaton has 13857 states and 17888 transitions. Word has length 159 [2022-07-22 20:51:34,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:34,737 INFO L495 AbstractCegarLoop]: Abstraction has 13857 states and 17888 transitions. [2022-07-22 20:51:34,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 20:51:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 13857 states and 17888 transitions. [2022-07-22 20:51:34,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 20:51:34,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:34,750 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 20:51:34,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 20:51:34,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:34,951 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:34,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:34,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1281698088, now seen corresponding path program 1 times [2022-07-22 20:51:34,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:34,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496996687] [2022-07-22 20:51:34,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:34,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:34,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:34,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:34,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:35,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:35,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:35,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 20:51:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:35,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 20:51:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:35,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:35,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 20:51:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:35,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:35,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 20:51:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-22 20:51:35,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:35,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496996687] [2022-07-22 20:51:35,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496996687] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:51:35,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712590843] [2022-07-22 20:51:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:35,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:35,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:51:35,035 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:51:35,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 20:51:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:35,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 20:51:35,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:51:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-22 20:51:35,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:51:35,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712590843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:35,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:51:35,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 20:51:35,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894779716] [2022-07-22 20:51:35,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:35,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:51:35,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:35,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:51:35,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:35,222 INFO L87 Difference]: Start difference. First operand 13857 states and 17888 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 20:51:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:36,094 INFO L93 Difference]: Finished difference Result 32314 states and 42790 transitions. [2022-07-22 20:51:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:51:36,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-07-22 20:51:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:36,162 INFO L225 Difference]: With dead ends: 32314 [2022-07-22 20:51:36,162 INFO L226 Difference]: Without dead ends: 22915 [2022-07-22 20:51:36,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:36,193 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 286 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:36,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 530 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:51:36,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22915 states. [2022-07-22 20:51:37,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22915 to 22812. [2022-07-22 20:51:37,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22812 states, 19108 states have (on average 1.3007640778731422) internal successors, (24855), 19331 states have internal predecessors, (24855), 1973 states have call successors, (1973), 1476 states have call predecessors, (1973), 1729 states have return successors, (3227), 2022 states have call predecessors, (3227), 1971 states have call successors, (3227) [2022-07-22 20:51:37,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22812 states to 22812 states and 30055 transitions. [2022-07-22 20:51:37,408 INFO L78 Accepts]: Start accepts. Automaton has 22812 states and 30055 transitions. Word has length 160 [2022-07-22 20:51:37,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:37,409 INFO L495 AbstractCegarLoop]: Abstraction has 22812 states and 30055 transitions. [2022-07-22 20:51:37,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 20:51:37,409 INFO L276 IsEmpty]: Start isEmpty. Operand 22812 states and 30055 transitions. [2022-07-22 20:51:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 20:51:37,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:37,435 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 20:51:37,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 20:51:37,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:37,656 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:37,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:37,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1321921686, now seen corresponding path program 1 times [2022-07-22 20:51:37,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:37,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778199908] [2022-07-22 20:51:37,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:37,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:37,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:37,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:37,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:37,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 20:51:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 20:51:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:37,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:37,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 20:51:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:37,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:37,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 20:51:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-22 20:51:37,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:37,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778199908] [2022-07-22 20:51:37,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778199908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:37,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:37,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:51:37,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106169394] [2022-07-22 20:51:37,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:37,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:51:37,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:37,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:51:37,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:51:37,708 INFO L87 Difference]: Start difference. First operand 22812 states and 30055 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:51:39,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:39,252 INFO L93 Difference]: Finished difference Result 39262 states and 52135 transitions. [2022-07-22 20:51:39,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:51:39,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2022-07-22 20:51:39,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:39,311 INFO L225 Difference]: With dead ends: 39262 [2022-07-22 20:51:39,311 INFO L226 Difference]: Without dead ends: 20907 [2022-07-22 20:51:39,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:51:39,348 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 417 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:39,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 636 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:51:39,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20907 states. [2022-07-22 20:51:40,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20907 to 19245. [2022-07-22 20:51:40,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19245 states, 16078 states have (on average 1.3000373180743874) internal successors, (20902), 16345 states have internal predecessors, (20902), 1610 states have call successors, (1610), 1198 states have call predecessors, (1610), 1555 states have return successors, (2726), 1711 states have call predecessors, (2726), 1608 states have call successors, (2726) [2022-07-22 20:51:40,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19245 states to 19245 states and 25238 transitions. [2022-07-22 20:51:40,477 INFO L78 Accepts]: Start accepts. Automaton has 19245 states and 25238 transitions. Word has length 160 [2022-07-22 20:51:40,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:40,477 INFO L495 AbstractCegarLoop]: Abstraction has 19245 states and 25238 transitions. [2022-07-22 20:51:40,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:51:40,478 INFO L276 IsEmpty]: Start isEmpty. Operand 19245 states and 25238 transitions. [2022-07-22 20:51:40,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-22 20:51:40,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:40,493 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 20:51:40,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 20:51:40,493 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:40,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:40,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1755889720, now seen corresponding path program 1 times [2022-07-22 20:51:40,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:40,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972661623] [2022-07-22 20:51:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:40,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:40,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:40,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:40,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:40,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:40,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:40,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 20:51:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:40,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:51:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:40,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:40,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 20:51:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:40,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:40,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 20:51:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:40,566 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 20:51:40,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:40,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972661623] [2022-07-22 20:51:40,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972661623] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:51:40,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574582843] [2022-07-22 20:51:40,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:40,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:40,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:51:40,572 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:51:40,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 20:51:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:40,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 20:51:40,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:51:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 20:51:40,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:51:40,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574582843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:40,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:51:40,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 20:51:40,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904435671] [2022-07-22 20:51:40,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:40,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:51:40,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:40,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:51:40,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:40,721 INFO L87 Difference]: Start difference. First operand 19245 states and 25238 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 20:51:41,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:41,562 INFO L93 Difference]: Finished difference Result 29840 states and 40378 transitions. [2022-07-22 20:51:41,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:51:41,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 162 [2022-07-22 20:51:41,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:41,605 INFO L225 Difference]: With dead ends: 29840 [2022-07-22 20:51:41,605 INFO L226 Difference]: Without dead ends: 19329 [2022-07-22 20:51:41,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:41,628 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 129 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:41,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 771 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:51:41,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19329 states. [2022-07-22 20:51:42,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19329 to 19245. [2022-07-22 20:51:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19245 states, 16078 states have (on average 1.2757183729319568) internal successors, (20511), 16345 states have internal predecessors, (20511), 1610 states have call successors, (1610), 1198 states have call predecessors, (1610), 1555 states have return successors, (2726), 1711 states have call predecessors, (2726), 1608 states have call successors, (2726) [2022-07-22 20:51:42,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19245 states to 19245 states and 24847 transitions. [2022-07-22 20:51:42,713 INFO L78 Accepts]: Start accepts. Automaton has 19245 states and 24847 transitions. Word has length 162 [2022-07-22 20:51:42,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:42,714 INFO L495 AbstractCegarLoop]: Abstraction has 19245 states and 24847 transitions. [2022-07-22 20:51:42,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 20:51:42,714 INFO L276 IsEmpty]: Start isEmpty. Operand 19245 states and 24847 transitions. [2022-07-22 20:51:42,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-22 20:51:42,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:42,728 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 20:51:42,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-22 20:51:42,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-22 20:51:42,929 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:42,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:42,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1035796568, now seen corresponding path program 1 times [2022-07-22 20:51:42,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:42,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111169528] [2022-07-22 20:51:42,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:42,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:42,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:42,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:42,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:42,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:42,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:42,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 20:51:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:51:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:42,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 20:51:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:43,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:43,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 20:51:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 20:51:43,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:43,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111169528] [2022-07-22 20:51:43,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111169528] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:51:43,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679661837] [2022-07-22 20:51:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:43,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:43,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:51:43,009 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:51:43,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 20:51:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:43,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:51:43,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:51:43,171 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 20:51:43,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:51:43,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679661837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:43,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:51:43,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 20:51:43,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239659159] [2022-07-22 20:51:43,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:43,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:51:43,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:43,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:51:43,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:43,173 INFO L87 Difference]: Start difference. First operand 19245 states and 24847 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 20:51:44,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:44,071 INFO L93 Difference]: Finished difference Result 31799 states and 42237 transitions. [2022-07-22 20:51:44,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:51:44,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 162 [2022-07-22 20:51:44,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:44,124 INFO L225 Difference]: With dead ends: 31799 [2022-07-22 20:51:44,124 INFO L226 Difference]: Without dead ends: 18766 [2022-07-22 20:51:44,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:44,147 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 273 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:44,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 353 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:51:44,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18766 states. [2022-07-22 20:51:44,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18766 to 14280. [2022-07-22 20:51:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14280 states, 11865 states have (on average 1.2332069110830173) internal successors, (14632), 12046 states have internal predecessors, (14632), 1232 states have call successors, (1232), 923 states have call predecessors, (1232), 1181 states have return successors, (1900), 1316 states have call predecessors, (1900), 1230 states have call successors, (1900) [2022-07-22 20:51:44,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14280 states to 14280 states and 17764 transitions. [2022-07-22 20:51:44,985 INFO L78 Accepts]: Start accepts. Automaton has 14280 states and 17764 transitions. Word has length 162 [2022-07-22 20:51:44,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:44,985 INFO L495 AbstractCegarLoop]: Abstraction has 14280 states and 17764 transitions. [2022-07-22 20:51:44,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 20:51:44,985 INFO L276 IsEmpty]: Start isEmpty. Operand 14280 states and 17764 transitions. [2022-07-22 20:51:44,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 20:51:44,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:44,994 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 20:51:45,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 20:51:45,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-22 20:51:45,202 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:45,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:45,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1007655319, now seen corresponding path program 1 times [2022-07-22 20:51:45,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:45,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741641712] [2022-07-22 20:51:45,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:45,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:45,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:45,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:45,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:45,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:45,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:45,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 20:51:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:45,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:45,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 20:51:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:45,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 20:51:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:45,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:45,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-22 20:51:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-22 20:51:45,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:45,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741641712] [2022-07-22 20:51:45,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741641712] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:51:45,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009229619] [2022-07-22 20:51:45,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:45,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:45,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:51:45,284 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:51:45,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 20:51:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:45,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:51:45,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:51:45,413 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 20:51:45,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:51:45,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009229619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:45,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:51:45,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 20:51:45,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806386252] [2022-07-22 20:51:45,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:45,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:51:45,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:45,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:51:45,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:45,415 INFO L87 Difference]: Start difference. First operand 14280 states and 17764 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 20:51:46,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:46,593 INFO L93 Difference]: Finished difference Result 31933 states and 40362 transitions. [2022-07-22 20:51:46,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:51:46,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 163 [2022-07-22 20:51:46,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:46,652 INFO L225 Difference]: With dead ends: 31933 [2022-07-22 20:51:46,652 INFO L226 Difference]: Without dead ends: 22111 [2022-07-22 20:51:46,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:46,674 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 136 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:46,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 786 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:51:46,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22111 states. [2022-07-22 20:51:47,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22111 to 22109. [2022-07-22 20:51:47,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22109 states, 18503 states have (on average 1.2373128681835377) internal successors, (22894), 18781 states have internal predecessors, (22894), 1863 states have call successors, (1863), 1389 states have call predecessors, (1863), 1741 states have return successors, (3153), 1948 states have call predecessors, (3153), 1861 states have call successors, (3153) [2022-07-22 20:51:47,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22109 states to 22109 states and 27910 transitions. [2022-07-22 20:51:47,877 INFO L78 Accepts]: Start accepts. Automaton has 22109 states and 27910 transitions. Word has length 163 [2022-07-22 20:51:47,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:47,878 INFO L495 AbstractCegarLoop]: Abstraction has 22109 states and 27910 transitions. [2022-07-22 20:51:47,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 20:51:47,878 INFO L276 IsEmpty]: Start isEmpty. Operand 22109 states and 27910 transitions. [2022-07-22 20:51:47,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 20:51:47,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:47,894 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 20:51:47,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 20:51:48,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-22 20:51:48,107 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:48,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:48,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1197312820, now seen corresponding path program 1 times [2022-07-22 20:51:48,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:48,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993288711] [2022-07-22 20:51:48,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:48,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:48,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:48,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:48,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:48,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:48,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 20:51:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:48,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:51:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:48,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:51:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:48,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:48,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 20:51:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 20:51:48,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:48,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993288711] [2022-07-22 20:51:48,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993288711] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:51:48,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670701720] [2022-07-22 20:51:48,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:48,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:48,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:51:48,198 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:51:48,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 20:51:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:48,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 20:51:48,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:51:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-22 20:51:48,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:51:48,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670701720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:48,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:51:48,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-22 20:51:48,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067350091] [2022-07-22 20:51:48,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:48,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:51:48,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:48,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:51:48,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:51:48,494 INFO L87 Difference]: Start difference. First operand 22109 states and 27910 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 20:51:50,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:50,216 INFO L93 Difference]: Finished difference Result 39712 states and 50761 transitions. [2022-07-22 20:51:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 20:51:50,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-07-22 20:51:50,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:50,274 INFO L225 Difference]: With dead ends: 39712 [2022-07-22 20:51:50,274 INFO L226 Difference]: Without dead ends: 22061 [2022-07-22 20:51:50,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:51:50,309 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 363 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:50,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 581 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:51:50,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22061 states. [2022-07-22 20:51:51,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22061 to 22061. [2022-07-22 20:51:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22061 states, 18455 states have (on average 1.2119208886480628) internal successors, (22366), 18733 states have internal predecessors, (22366), 1863 states have call successors, (1863), 1389 states have call predecessors, (1863), 1741 states have return successors, (3153), 1948 states have call predecessors, (3153), 1861 states have call successors, (3153) [2022-07-22 20:51:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22061 states to 22061 states and 27382 transitions. [2022-07-22 20:51:51,753 INFO L78 Accepts]: Start accepts. Automaton has 22061 states and 27382 transitions. Word has length 164 [2022-07-22 20:51:51,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:51,754 INFO L495 AbstractCegarLoop]: Abstraction has 22061 states and 27382 transitions. [2022-07-22 20:51:51,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 20:51:51,754 INFO L276 IsEmpty]: Start isEmpty. Operand 22061 states and 27382 transitions. [2022-07-22 20:51:51,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 20:51:51,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:51,770 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 20:51:51,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 20:51:51,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-22 20:51:51,971 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:51,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1815482190, now seen corresponding path program 1 times [2022-07-22 20:51:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:51,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805960762] [2022-07-22 20:51:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:51,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:51,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 20:51:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:51:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:51:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 20:51:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 20:51:52,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:52,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805960762] [2022-07-22 20:51:52,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805960762] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:51:52,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279917523] [2022-07-22 20:51:52,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:52,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:52,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:51:52,066 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:51:52,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 20:51:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 20:51:52,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:51:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-22 20:51:52,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:51:52,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279917523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:52,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:51:52,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-22 20:51:52,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677822587] [2022-07-22 20:51:52,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:52,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:51:52,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:52,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:51:52,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:51:52,258 INFO L87 Difference]: Start difference. First operand 22061 states and 27382 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 20:51:53,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:53,705 INFO L93 Difference]: Finished difference Result 38588 states and 49068 transitions. [2022-07-22 20:51:53,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 20:51:53,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-07-22 20:51:53,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:53,783 INFO L225 Difference]: With dead ends: 38588 [2022-07-22 20:51:53,784 INFO L226 Difference]: Without dead ends: 21677 [2022-07-22 20:51:53,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-22 20:51:53,819 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 390 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:53,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 593 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:51:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21677 states. [2022-07-22 20:51:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21677 to 19686. [2022-07-22 20:51:55,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19686 states, 16454 states have (on average 1.1835419958672664) internal successors, (19474), 16693 states have internal predecessors, (19474), 1671 states have call successors, (1671), 1249 states have call predecessors, (1671), 1559 states have return successors, (2692), 1749 states have call predecessors, (2692), 1669 states have call successors, (2692) [2022-07-22 20:51:55,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19686 states to 19686 states and 23837 transitions. [2022-07-22 20:51:55,176 INFO L78 Accepts]: Start accepts. Automaton has 19686 states and 23837 transitions. Word has length 164 [2022-07-22 20:51:55,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:55,176 INFO L495 AbstractCegarLoop]: Abstraction has 19686 states and 23837 transitions. [2022-07-22 20:51:55,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 20:51:55,177 INFO L276 IsEmpty]: Start isEmpty. Operand 19686 states and 23837 transitions. [2022-07-22 20:51:55,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 20:51:55,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:55,187 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 20:51:55,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 20:51:55,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-22 20:51:55,387 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:55,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:55,388 INFO L85 PathProgramCache]: Analyzing trace with hash 93479504, now seen corresponding path program 1 times [2022-07-22 20:51:55,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:55,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587087442] [2022-07-22 20:51:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:55,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 20:51:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:51:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:51:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 20:51:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 20:51:55,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:55,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587087442] [2022-07-22 20:51:55,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587087442] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:51:55,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434581975] [2022-07-22 20:51:55,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:55,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:55,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:51:55,487 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:51:55,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 20:51:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 20:51:55,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:51:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-22 20:51:55,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:51:55,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434581975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:55,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:51:55,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-22 20:51:55,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026624966] [2022-07-22 20:51:55,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:55,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:51:55,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:55,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:51:55,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:51:55,659 INFO L87 Difference]: Start difference. First operand 19686 states and 23837 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 20:51:56,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:56,828 INFO L93 Difference]: Finished difference Result 28246 states and 34475 transitions. [2022-07-22 20:51:56,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 20:51:56,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-07-22 20:51:56,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:56,870 INFO L225 Difference]: With dead ends: 28246 [2022-07-22 20:51:56,870 INFO L226 Difference]: Without dead ends: 17386 [2022-07-22 20:51:56,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:51:56,890 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 354 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:56,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 567 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:51:56,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17386 states. [2022-07-22 20:51:57,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17386 to 14165. [2022-07-22 20:51:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14165 states, 11759 states have (on average 1.1724636448677608) internal successors, (13787), 11923 states have internal predecessors, (13787), 1253 states have call successors, (1253), 919 states have call predecessors, (1253), 1151 states have return successors, (1959), 1326 states have call predecessors, (1959), 1251 states have call successors, (1959) [2022-07-22 20:51:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14165 states to 14165 states and 16999 transitions. [2022-07-22 20:51:57,984 INFO L78 Accepts]: Start accepts. Automaton has 14165 states and 16999 transitions. Word has length 164 [2022-07-22 20:51:57,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:57,984 INFO L495 AbstractCegarLoop]: Abstraction has 14165 states and 16999 transitions. [2022-07-22 20:51:57,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 20:51:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 14165 states and 16999 transitions. [2022-07-22 20:51:57,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 20:51:57,991 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:57,991 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 20:51:58,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 20:51:58,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:58,192 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:58,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:58,192 INFO L85 PathProgramCache]: Analyzing trace with hash -999155698, now seen corresponding path program 1 times [2022-07-22 20:51:58,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:58,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646817273] [2022-07-22 20:51:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:58,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:51:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:51:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:51:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 20:51:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:51:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:51:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:51:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 20:51:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,273 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 20:51:58,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:58,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646817273] [2022-07-22 20:51:58,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646817273] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:51:58,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667914473] [2022-07-22 20:51:58,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:58,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:51:58,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:51:58,275 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:51:58,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 20:51:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 20:51:58,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:51:58,415 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 20:51:58,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:51:58,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667914473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:58,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:51:58,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-07-22 20:51:58,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158327344] [2022-07-22 20:51:58,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:58,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:51:58,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:58,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:51:58,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:51:58,418 INFO L87 Difference]: Start difference. First operand 14165 states and 16999 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 20:51:59,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:59,485 INFO L93 Difference]: Finished difference Result 23957 states and 29154 transitions. [2022-07-22 20:51:59,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 20:51:59,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-07-22 20:51:59,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:59,524 INFO L225 Difference]: With dead ends: 23957 [2022-07-22 20:51:59,524 INFO L226 Difference]: Without dead ends: 14252 [2022-07-22 20:51:59,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:51:59,546 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 49 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:59,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1254 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:51:59,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14252 states. [2022-07-22 20:52:00,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14252 to 14012. [2022-07-22 20:52:00,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14012 states, 11622 states have (on average 1.1591808638788506) internal successors, (13472), 11775 states have internal predecessors, (13472), 1253 states have call successors, (1253), 919 states have call predecessors, (1253), 1135 states have return successors, (1859), 1321 states have call predecessors, (1859), 1251 states have call successors, (1859) [2022-07-22 20:52:00,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14012 states to 14012 states and 16584 transitions. [2022-07-22 20:52:00,782 INFO L78 Accepts]: Start accepts. Automaton has 14012 states and 16584 transitions. Word has length 164 [2022-07-22 20:52:00,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:00,782 INFO L495 AbstractCegarLoop]: Abstraction has 14012 states and 16584 transitions. [2022-07-22 20:52:00,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 20:52:00,782 INFO L276 IsEmpty]: Start isEmpty. Operand 14012 states and 16584 transitions. [2022-07-22 20:52:00,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 20:52:00,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:00,788 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 20:52:00,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-22 20:52:00,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:52:00,989 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:00,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:00,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1766359060, now seen corresponding path program 1 times [2022-07-22 20:52:00,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:00,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669662136] [2022-07-22 20:52:00,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:00,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:01,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:01,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:52:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:01,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:52:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:01,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:52:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:01,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 20:52:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:01,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:52:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:01,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:52:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:01,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:52:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:01,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:52:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:01,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 20:52:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-22 20:52:01,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:01,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669662136] [2022-07-22 20:52:01,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669662136] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:52:01,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166853643] [2022-07-22 20:52:01,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:01,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:52:01,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:52:01,076 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:52:01,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 20:52:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:01,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 20:52:01,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:52:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-22 20:52:01,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:52:01,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166853643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:01,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:52:01,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-07-22 20:52:01,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718951836] [2022-07-22 20:52:01,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:01,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:52:01,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:01,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:52:01,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:52:01,209 INFO L87 Difference]: Start difference. First operand 14012 states and 16584 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 20:52:02,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:02,063 INFO L93 Difference]: Finished difference Result 20327 states and 24227 transitions. [2022-07-22 20:52:02,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 20:52:02,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-07-22 20:52:02,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:02,089 INFO L225 Difference]: With dead ends: 20327 [2022-07-22 20:52:02,089 INFO L226 Difference]: Without dead ends: 10772 [2022-07-22 20:52:02,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:52:02,105 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 10 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:02,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1239 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:52:02,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10772 states. [2022-07-22 20:52:02,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10772 to 10736. [2022-07-22 20:52:02,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10736 states, 8846 states have (on average 1.1583766674203029) internal successors, (10247), 8965 states have internal predecessors, (10247), 982 states have call successors, (982), 719 states have call predecessors, (982), 906 states have return successors, (1369), 1054 states have call predecessors, (1369), 980 states have call successors, (1369) [2022-07-22 20:52:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10736 states to 10736 states and 12598 transitions. [2022-07-22 20:52:02,853 INFO L78 Accepts]: Start accepts. Automaton has 10736 states and 12598 transitions. Word has length 164 [2022-07-22 20:52:02,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:02,853 INFO L495 AbstractCegarLoop]: Abstraction has 10736 states and 12598 transitions. [2022-07-22 20:52:02,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 20:52:02,854 INFO L276 IsEmpty]: Start isEmpty. Operand 10736 states and 12598 transitions. [2022-07-22 20:52:02,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-22 20:52:02,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:02,858 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:02,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 20:52:03,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:52:03,059 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:03,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:03,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1870747336, now seen corresponding path program 1 times [2022-07-22 20:52:03,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:03,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933761631] [2022-07-22 20:52:03,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:03,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:52:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:52:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:52:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:52:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 20:52:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 20:52:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 20:52:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:52:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 20:52:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 20:52:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 20:52:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:52:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 20:52:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-22 20:52:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-22 20:52:03,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:03,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933761631] [2022-07-22 20:52:03,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933761631] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:52:03,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53995824] [2022-07-22 20:52:03,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:03,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:52:03,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:52:03,149 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:52:03,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 20:52:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:52:03,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:52:03,423 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-22 20:52:03,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:52:03,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53995824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:03,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:52:03,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-22 20:52:03,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450933227] [2022-07-22 20:52:03,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:03,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:52:03,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:03,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:52:03,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:52:03,425 INFO L87 Difference]: Start difference. First operand 10736 states and 12598 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 20:52:04,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:04,411 INFO L93 Difference]: Finished difference Result 19604 states and 23336 transitions. [2022-07-22 20:52:04,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:52:04,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 195 [2022-07-22 20:52:04,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:04,443 INFO L225 Difference]: With dead ends: 19604 [2022-07-22 20:52:04,443 INFO L226 Difference]: Without dead ends: 15170 [2022-07-22 20:52:04,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:52:04,454 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 52 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:04,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 615 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:52:04,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15170 states. [2022-07-22 20:52:05,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15170 to 15160. [2022-07-22 20:52:05,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15160 states, 12283 states have (on average 1.1693397378490598) internal successors, (14363), 12462 states have internal predecessors, (14363), 1482 states have call successors, (1482), 1083 states have call predecessors, (1482), 1393 states have return successors, (2062), 1617 states have call predecessors, (2062), 1480 states have call successors, (2062) [2022-07-22 20:52:05,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15160 states to 15160 states and 17907 transitions. [2022-07-22 20:52:05,439 INFO L78 Accepts]: Start accepts. Automaton has 15160 states and 17907 transitions. Word has length 195 [2022-07-22 20:52:05,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:05,439 INFO L495 AbstractCegarLoop]: Abstraction has 15160 states and 17907 transitions. [2022-07-22 20:52:05,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 20:52:05,439 INFO L276 IsEmpty]: Start isEmpty. Operand 15160 states and 17907 transitions. [2022-07-22 20:52:05,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-22 20:52:05,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:05,445 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:05,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 20:52:05,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-22 20:52:05,646 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:05,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:05,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1526826682, now seen corresponding path program 1 times [2022-07-22 20:52:05,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:05,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101931647] [2022-07-22 20:52:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:05,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:52:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:52:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:52:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:52:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 20:52:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 20:52:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 20:52:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:52:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 20:52:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 20:52:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 20:52:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:52:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 20:52:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-22 20:52:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-22 20:52:05,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:05,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101931647] [2022-07-22 20:52:05,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101931647] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:52:05,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946288964] [2022-07-22 20:52:05,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:05,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:52:05,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:52:05,749 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:52:05,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 20:52:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:05,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:52:05,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:52:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-22 20:52:06,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:52:06,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946288964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:06,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:52:06,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-22 20:52:06,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655611333] [2022-07-22 20:52:06,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:06,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:52:06,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:06,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:52:06,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:52:06,020 INFO L87 Difference]: Start difference. First operand 15160 states and 17907 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-22 20:52:07,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:07,013 INFO L93 Difference]: Finished difference Result 21690 states and 26147 transitions. [2022-07-22 20:52:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:52:07,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 195 [2022-07-22 20:52:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:07,026 INFO L225 Difference]: With dead ends: 21690 [2022-07-22 20:52:07,026 INFO L226 Difference]: Without dead ends: 6291 [2022-07-22 20:52:07,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:52:07,040 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 192 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:07,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 296 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:52:07,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6291 states. [2022-07-22 20:52:07,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6291 to 6291. [2022-07-22 20:52:07,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6291 states, 5397 states have (on average 1.1241430424309802) internal successors, (6067), 5453 states have internal predecessors, (6067), 474 states have call successors, (474), 354 states have call predecessors, (474), 419 states have return successors, (669), 484 states have call predecessors, (669), 474 states have call successors, (669) [2022-07-22 20:52:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6291 states to 6291 states and 7210 transitions. [2022-07-22 20:52:07,568 INFO L78 Accepts]: Start accepts. Automaton has 6291 states and 7210 transitions. Word has length 195 [2022-07-22 20:52:07,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:07,569 INFO L495 AbstractCegarLoop]: Abstraction has 6291 states and 7210 transitions. [2022-07-22 20:52:07,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-22 20:52:07,569 INFO L276 IsEmpty]: Start isEmpty. Operand 6291 states and 7210 transitions. [2022-07-22 20:52:07,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-22 20:52:07,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:07,574 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 20:52:07,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 20:52:07,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:52:07,775 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:07,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:07,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2143980507, now seen corresponding path program 1 times [2022-07-22 20:52:07,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:07,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6490569] [2022-07-22 20:52:07,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:07,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:52:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:52:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:52:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 20:52:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:52:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 20:52:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 20:52:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:52:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 20:52:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:52:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-22 20:52:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-22 20:52:07,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:07,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6490569] [2022-07-22 20:52:07,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6490569] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:52:07,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989964546] [2022-07-22 20:52:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:07,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:52:07,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:52:07,861 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:52:07,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-22 20:52:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:52:07,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:52:07,986 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 20:52:07,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:52:07,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989964546] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:07,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:52:07,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 20:52:07,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640601984] [2022-07-22 20:52:07,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:07,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:52:07,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:07,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:52:07,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:52:07,988 INFO L87 Difference]: Start difference. First operand 6291 states and 7210 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 20:52:08,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:08,225 INFO L93 Difference]: Finished difference Result 8380 states and 9584 transitions. [2022-07-22 20:52:08,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:52:08,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 199 [2022-07-22 20:52:08,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:08,229 INFO L225 Difference]: With dead ends: 8380 [2022-07-22 20:52:08,229 INFO L226 Difference]: Without dead ends: 2021 [2022-07-22 20:52:08,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:52:08,235 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 123 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:08,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 401 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:52:08,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2022-07-22 20:52:08,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 2021. [2022-07-22 20:52:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2021 states, 1720 states have (on average 1.0976744186046512) internal successors, (1888), 1731 states have internal predecessors, (1888), 172 states have call successors, (172), 120 states have call predecessors, (172), 128 states have return successors, (187), 170 states have call predecessors, (187), 172 states have call successors, (187) [2022-07-22 20:52:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 2247 transitions. [2022-07-22 20:52:08,379 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 2247 transitions. Word has length 199 [2022-07-22 20:52:08,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:08,379 INFO L495 AbstractCegarLoop]: Abstraction has 2021 states and 2247 transitions. [2022-07-22 20:52:08,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 20:52:08,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 2247 transitions. [2022-07-22 20:52:08,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-22 20:52:08,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:08,381 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 20:52:08,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-22 20:52:08,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:52:08,582 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:08,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1306252531, now seen corresponding path program 1 times [2022-07-22 20:52:08,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:08,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023838202] [2022-07-22 20:52:08,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:08,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:52:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:52:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:52:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 20:52:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 20:52:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:52:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 20:52:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:52:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-22 20:52:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:52:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-22 20:52:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 53 proven. 41 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-22 20:52:08,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:08,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023838202] [2022-07-22 20:52:08,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023838202] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:52:08,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240900601] [2022-07-22 20:52:08,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:08,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:52:08,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:52:08,662 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:52:08,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-22 20:52:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 20:52:08,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:52:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 20:52:08,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:52:08,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240900601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:08,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:52:08,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2022-07-22 20:52:08,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409303414] [2022-07-22 20:52:08,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:08,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:52:08,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:08,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:52:08,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:52:08,842 INFO L87 Difference]: Start difference. First operand 2021 states and 2247 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 20:52:08,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:08,986 INFO L93 Difference]: Finished difference Result 3512 states and 3932 transitions. [2022-07-22 20:52:08,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:52:08,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 200 [2022-07-22 20:52:08,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:08,990 INFO L225 Difference]: With dead ends: 3512 [2022-07-22 20:52:08,990 INFO L226 Difference]: Without dead ends: 2021 [2022-07-22 20:52:08,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:52:08,992 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 91 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:08,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 354 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:52:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2022-07-22 20:52:09,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 2021. [2022-07-22 20:52:09,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2021 states, 1720 states have (on average 1.0872093023255813) internal successors, (1870), 1731 states have internal predecessors, (1870), 172 states have call successors, (172), 120 states have call predecessors, (172), 128 states have return successors, (187), 170 states have call predecessors, (187), 172 states have call successors, (187) [2022-07-22 20:52:09,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 2229 transitions. [2022-07-22 20:52:09,134 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 2229 transitions. Word has length 200 [2022-07-22 20:52:09,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:09,134 INFO L495 AbstractCegarLoop]: Abstraction has 2021 states and 2229 transitions. [2022-07-22 20:52:09,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 20:52:09,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 2229 transitions. [2022-07-22 20:52:09,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-22 20:52:09,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:09,136 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:09,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-22 20:52:09,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:52:09,337 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:09,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:09,337 INFO L85 PathProgramCache]: Analyzing trace with hash -78871575, now seen corresponding path program 1 times [2022-07-22 20:52:09,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:09,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256722404] [2022-07-22 20:52:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:09,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:52:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:52:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:52:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 20:52:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 20:52:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:52:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 20:52:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:52:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 20:52:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:52:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-22 20:52:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-22 20:52:09,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:09,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256722404] [2022-07-22 20:52:09,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256722404] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:09,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:09,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:52:09,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559206371] [2022-07-22 20:52:09,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:09,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:52:09,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:09,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:52:09,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:52:09,445 INFO L87 Difference]: Start difference. First operand 2021 states and 2229 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-22 20:52:10,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:10,288 INFO L93 Difference]: Finished difference Result 2257 states and 2483 transitions. [2022-07-22 20:52:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:52:10,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 202 [2022-07-22 20:52:10,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:10,289 INFO L225 Difference]: With dead ends: 2257 [2022-07-22 20:52:10,289 INFO L226 Difference]: Without dead ends: 0 [2022-07-22 20:52:10,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:52:10,292 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 659 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:10,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 862 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 20:52:10,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-22 20:52:10,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-22 20:52:10,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:52:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 20:52:10,292 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 202 [2022-07-22 20:52:10,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:10,293 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 20:52:10,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-22 20:52:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-22 20:52:10,293 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-22 20:52:10,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-22 20:52:10,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-22 20:52:10,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-22 20:52:10,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-22 20:53:14,379 WARN L233 SmtUtils]: Spent 7.62s on a formula simplification. DAG size of input: 172 DAG size of output: 167 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-22 20:54:12,013 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 158 DAG size of output: 153 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-22 20:54:36,601 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 156 DAG size of output: 154 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)