./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 53b2835bffc5e46db9e843d7a27e5dc2af58bf47930b3bc6dacf70c618d5bd01 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:34:55,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:34:55,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:34:55,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:34:55,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:34:55,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:34:55,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:34:55,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:34:55,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:34:55,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:34:55,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:34:55,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:34:55,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:34:55,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:34:55,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:34:55,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:34:55,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:34:55,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:34:55,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:34:55,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:34:55,675 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:34:55,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:34:55,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:34:55,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:34:55,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:34:55,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:34:55,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:34:55,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:34:55,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:34:55,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:34:55,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:34:55,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:34:55,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:34:55,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:34:55,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:34:55,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:34:55,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:34:55,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:34:55,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:34:55,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:34:55,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:34:55,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:34:55,689 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:34:55,712 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:34:55,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:34:55,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:34:55,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:34:55,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:34:55,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:34:55,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:34:55,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:34:55,714 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:34:55,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:34:55,715 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:34:55,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:34:55,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:34:55,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:34:55,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:34:55,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:34:55,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:34:55,716 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:34:55,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:34:55,717 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:34:55,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:34:55,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:34:55,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:34:55,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:34:55,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:34:55,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:34:55,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:34:55,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:34:55,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:34:55,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:34:55,719 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:34:55,719 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:34:55,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:34:55,719 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53b2835bffc5e46db9e843d7a27e5dc2af58bf47930b3bc6dacf70c618d5bd01 [2022-07-12 09:34:55,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:34:55,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:34:55,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:34:55,926 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:34:55,927 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:34:55,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c [2022-07-12 09:34:55,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a13aa337/8be30359e0034993a6eab0632200b2cd/FLAGcc95205f8 [2022-07-12 09:34:56,336 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:34:56,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c [2022-07-12 09:34:56,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a13aa337/8be30359e0034993a6eab0632200b2cd/FLAGcc95205f8 [2022-07-12 09:34:56,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a13aa337/8be30359e0034993a6eab0632200b2cd [2022-07-12 09:34:56,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:34:56,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:34:56,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:34:56,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:34:56,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:34:56,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:34:56" (1/1) ... [2022-07-12 09:34:56,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d28c3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:34:56, skipping insertion in model container [2022-07-12 09:34:56,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:34:56" (1/1) ... [2022-07-12 09:34:56,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:34:56,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:34:56,863 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.03.cil-2.c[911,924] [2022-07-12 09:34:56,896 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.03.cil-2.c[8416,8429] [2022-07-12 09:34:56,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:34:56,935 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:34:56,941 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.03.cil-2.c[911,924] [2022-07-12 09:34:56,954 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.03.cil-2.c[8416,8429] [2022-07-12 09:34:56,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:34:56,998 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:34:56,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:34:56 WrapperNode [2022-07-12 09:34:56,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:34:56,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:34:57,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:34:57,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:34:57,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:34:56" (1/1) ... [2022-07-12 09:34:57,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:34:56" (1/1) ... [2022-07-12 09:34:57,049 INFO L137 Inliner]: procedures = 61, calls = 70, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 556 [2022-07-12 09:34:57,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:34:57,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:34:57,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:34:57,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:34:57,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:34:56" (1/1) ... [2022-07-12 09:34:57,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:34:56" (1/1) ... [2022-07-12 09:34:57,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:34:56" (1/1) ... [2022-07-12 09:34:57,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:34:56" (1/1) ... [2022-07-12 09:34:57,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:34:56" (1/1) ... [2022-07-12 09:34:57,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:34:56" (1/1) ... [2022-07-12 09:34:57,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:34:56" (1/1) ... [2022-07-12 09:34:57,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:34:57,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:34:57,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:34:57,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:34:57,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:34:56" (1/1) ... [2022-07-12 09:34:57,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:34:57,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:34:57,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:34:57,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:34:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:34:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:34:57,143 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:34:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-12 09:34:57,144 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-12 09:34:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:34:57,145 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:34:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:34:57,145 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:34:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-12 09:34:57,145 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-12 09:34:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:34:57,145 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:34:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:34:57,145 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:34:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-12 09:34:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-12 09:34:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-12 09:34:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-12 09:34:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-12 09:34:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-12 09:34:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:34:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:34:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:34:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:34:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:34:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-12 09:34:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-12 09:34:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:34:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:34:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:34:57,148 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:34:57,236 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:34:57,237 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:34:57,651 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-12 09:34:57,651 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; [2022-07-12 09:34:57,691 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:34:57,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:34:57,701 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-12 09:34:57,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:34:57 BoogieIcfgContainer [2022-07-12 09:34:57,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:34:57,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:34:57,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:34:57,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:34:57,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:34:56" (1/3) ... [2022-07-12 09:34:57,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f49b04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:34:57, skipping insertion in model container [2022-07-12 09:34:57,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:34:56" (2/3) ... [2022-07-12 09:34:57,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f49b04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:34:57, skipping insertion in model container [2022-07-12 09:34:57,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:34:57" (3/3) ... [2022-07-12 09:34:57,710 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.03.cil-2.c [2022-07-12 09:34:57,719 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:34:57,719 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:34:57,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:34:57,782 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@16225d9c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@32b667b5 [2022-07-12 09:34:57,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:34:57,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 274 states, 224 states have (on average 1.5714285714285714) internal successors, (352), 230 states have internal predecessors, (352), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-12 09:34:57,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:34:57,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:34:57,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:34:57,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:34:57,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:34:57,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1569523181, now seen corresponding path program 1 times [2022-07-12 09:34:57,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:34:57,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218633321] [2022-07-12 09:34:57,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:34:57,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:34:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:34:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:58,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:34:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:58,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:34:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:58,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:34:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:58,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:34:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:58,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:34:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:58,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:34:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:34:58,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:34:58,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218633321] [2022-07-12 09:34:58,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218633321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:34:58,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:34:58,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:34:58,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993333016] [2022-07-12 09:34:58,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:34:58,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:34:58,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:34:58,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:34:58,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:34:58,154 INFO L87 Difference]: Start difference. First operand has 274 states, 224 states have (on average 1.5714285714285714) internal successors, (352), 230 states have internal predecessors, (352), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:34:58,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:34:58,917 INFO L93 Difference]: Finished difference Result 680 states and 1041 transitions. [2022-07-12 09:34:58,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:34:58,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:34:58,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:34:58,927 INFO L225 Difference]: With dead ends: 680 [2022-07-12 09:34:58,927 INFO L226 Difference]: Without dead ends: 415 [2022-07-12 09:34:58,931 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 [2022-07-12 09:34:58,933 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 549 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:34:58,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 1493 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:34:58,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-07-12 09:34:58,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 376. [2022-07-12 09:34:58,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 306 states have (on average 1.4607843137254901) internal successors, (447), 312 states have internal predecessors, (447), 46 states have call successors, (46), 21 states have call predecessors, (46), 22 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-12 09:34:58,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 542 transitions. [2022-07-12 09:34:58,982 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 542 transitions. Word has length 65 [2022-07-12 09:34:58,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:34:58,982 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 542 transitions. [2022-07-12 09:34:58,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:34:58,983 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 542 transitions. [2022-07-12 09:34:58,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:34:58,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:34:58,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:34:58,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:34:58,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:34:58,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:34:58,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1046555475, now seen corresponding path program 1 times [2022-07-12 09:34:58,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:34:58,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851668999] [2022-07-12 09:34:58,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:34:58,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:34:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:59,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:34:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:59,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:34:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:59,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:34:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:59,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:34:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:59,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:34:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:59,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:34:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:59,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:34:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:59,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:34:59,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:34:59,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851668999] [2022-07-12 09:34:59,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851668999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:34:59,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:34:59,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:34:59,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842461876] [2022-07-12 09:34:59,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:34:59,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:34:59,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:34:59,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:34:59,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:34:59,087 INFO L87 Difference]: Start difference. First operand 376 states and 542 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:34:59,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:34:59,806 INFO L93 Difference]: Finished difference Result 773 states and 1108 transitions. [2022-07-12 09:34:59,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:34:59,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:34:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:34:59,809 INFO L225 Difference]: With dead ends: 773 [2022-07-12 09:34:59,810 INFO L226 Difference]: Without dead ends: 564 [2022-07-12 09:34:59,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-12 09:34:59,811 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 752 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:34:59,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 1681 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:34:59,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-07-12 09:34:59,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 488. [2022-07-12 09:34:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 396 states have (on average 1.446969696969697) internal successors, (573), 404 states have internal predecessors, (573), 59 states have call successors, (59), 28 states have call predecessors, (59), 31 states have return successors, (70), 59 states have call predecessors, (70), 57 states have call successors, (70) [2022-07-12 09:34:59,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 702 transitions. [2022-07-12 09:34:59,843 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 702 transitions. Word has length 65 [2022-07-12 09:34:59,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:34:59,843 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 702 transitions. [2022-07-12 09:34:59,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:34:59,844 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 702 transitions. [2022-07-12 09:34:59,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:34:59,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:34:59,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:34:59,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:34:59,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:34:59,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:34:59,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1219825711, now seen corresponding path program 1 times [2022-07-12 09:34:59,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:34:59,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268801077] [2022-07-12 09:34:59,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:34:59,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:34:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:59,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:34:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:59,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:34:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:59,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:34:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:59,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:34:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:59,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:34:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:59,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:34:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:59,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:34:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:34:59,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:34:59,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268801077] [2022-07-12 09:34:59,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268801077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:34:59,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:34:59,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:34:59,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790446421] [2022-07-12 09:34:59,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:34:59,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:34:59,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:34:59,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:34:59,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:34:59,956 INFO L87 Difference]: Start difference. First operand 488 states and 702 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) [2022-07-12 09:35:01,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:01,410 INFO L93 Difference]: Finished difference Result 2034 states and 2900 transitions. [2022-07-12 09:35:01,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 09:35:01,411 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 [2022-07-12 09:35:01,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:01,416 INFO L225 Difference]: With dead ends: 2034 [2022-07-12 09:35:01,416 INFO L226 Difference]: Without dead ends: 1701 [2022-07-12 09:35:01,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 09:35:01,418 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 2250 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 1691 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 1691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:01,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2268 Valid, 2030 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 1691 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:35:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2022-07-12 09:35:01,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1541. [2022-07-12 09:35:01,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1244 states have (on average 1.380225080385852) internal successors, (1717), 1267 states have internal predecessors, (1717), 169 states have call successors, (169), 111 states have call predecessors, (169), 126 states have return successors, (203), 165 states have call predecessors, (203), 167 states have call successors, (203) [2022-07-12 09:35:01,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2089 transitions. [2022-07-12 09:35:01,465 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2089 transitions. Word has length 65 [2022-07-12 09:35:01,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:01,465 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 2089 transitions. [2022-07-12 09:35:01,465 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) [2022-07-12 09:35:01,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2089 transitions. [2022-07-12 09:35:01,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:35:01,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:01,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:35:01,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:35:01,467 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:01,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:01,467 INFO L85 PathProgramCache]: Analyzing trace with hash 44002010, now seen corresponding path program 1 times [2022-07-12 09:35:01,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:01,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136156239] [2022-07-12 09:35:01,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:01,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:01,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:01,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:35:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:35:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:01,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:35:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:01,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:35:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:01,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 09:35:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:01,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:35:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:35:01,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:01,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136156239] [2022-07-12 09:35:01,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136156239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:01,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:01,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:35:01,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612678839] [2022-07-12 09:35:01,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:01,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:35:01,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:01,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:35:01,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:35:01,559 INFO L87 Difference]: Start difference. First operand 1541 states and 2089 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) [2022-07-12 09:35:02,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:02,135 INFO L93 Difference]: Finished difference Result 3069 states and 4168 transitions. [2022-07-12 09:35:02,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:35:02,136 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 [2022-07-12 09:35:02,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:02,141 INFO L225 Difference]: With dead ends: 3069 [2022-07-12 09:35:02,141 INFO L226 Difference]: Without dead ends: 1689 [2022-07-12 09:35:02,143 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 [2022-07-12 09:35:02,144 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 452 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:02,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1514 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:35:02,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2022-07-12 09:35:02,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1581. [2022-07-12 09:35:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1276 states have (on average 1.365987460815047) internal successors, (1743), 1299 states have internal predecessors, (1743), 169 states have call successors, (169), 111 states have call predecessors, (169), 134 states have return successors, (211), 173 states have call predecessors, (211), 167 states have call successors, (211) [2022-07-12 09:35:02,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2123 transitions. [2022-07-12 09:35:02,194 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2123 transitions. Word has length 66 [2022-07-12 09:35:02,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:02,194 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2123 transitions. [2022-07-12 09:35:02,195 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) [2022-07-12 09:35:02,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2123 transitions. [2022-07-12 09:35:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:35:02,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:02,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:35:02,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:35:02,196 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:02,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:02,196 INFO L85 PathProgramCache]: Analyzing trace with hash -985357288, now seen corresponding path program 1 times [2022-07-12 09:35:02,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:02,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743456388] [2022-07-12 09:35:02,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:02,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:02,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:02,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:35:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:02,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:35:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:02,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:35:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:02,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:35:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:02,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 09:35:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:02,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:35:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:35:02,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:02,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743456388] [2022-07-12 09:35:02,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743456388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:02,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:02,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:35:02,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149344032] [2022-07-12 09:35:02,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:02,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:35:02,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:02,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:35:02,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:35:02,265 INFO L87 Difference]: Start difference. First operand 1581 states and 2123 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) [2022-07-12 09:35:03,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:03,722 INFO L93 Difference]: Finished difference Result 5153 states and 6997 transitions. [2022-07-12 09:35:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 09:35:03,722 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 [2022-07-12 09:35:03,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:03,729 INFO L225 Difference]: With dead ends: 5153 [2022-07-12 09:35:03,729 INFO L226 Difference]: Without dead ends: 1972 [2022-07-12 09:35:03,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 09:35:03,736 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 2319 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 2070 SdHoareTripleChecker+Invalid, 2222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:03,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 2070 Invalid, 2222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:35:03,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2022-07-12 09:35:03,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1792. [2022-07-12 09:35:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1415 states have (on average 1.3208480565371026) internal successors, (1869), 1440 states have internal predecessors, (1869), 209 states have call successors, (209), 139 states have call predecessors, (209), 166 states have return successors, (257), 215 states have call predecessors, (257), 207 states have call successors, (257) [2022-07-12 09:35:03,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2335 transitions. [2022-07-12 09:35:03,795 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2335 transitions. Word has length 66 [2022-07-12 09:35:03,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:03,795 INFO L495 AbstractCegarLoop]: Abstraction has 1792 states and 2335 transitions. [2022-07-12 09:35:03,795 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) [2022-07-12 09:35:03,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2335 transitions. [2022-07-12 09:35:03,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:35:03,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:03,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:35:03,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:35:03,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:03,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:03,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1962986806, now seen corresponding path program 1 times [2022-07-12 09:35:03,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:03,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346742503] [2022-07-12 09:35:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:03,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:03,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:03,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:35:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:03,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:35:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:03,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:35:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:03,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:35:03,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:03,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346742503] [2022-07-12 09:35:03,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346742503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:03,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:03,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:35:03,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571704140] [2022-07-12 09:35:03,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:03,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:35:03,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:03,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:35:03,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:35:03,847 INFO L87 Difference]: Start difference. First operand 1792 states and 2335 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:04,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:04,250 INFO L93 Difference]: Finished difference Result 1979 states and 2623 transitions. [2022-07-12 09:35:04,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:35:04,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-12 09:35:04,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:04,256 INFO L225 Difference]: With dead ends: 1979 [2022-07-12 09:35:04,257 INFO L226 Difference]: Without dead ends: 1835 [2022-07-12 09:35:04,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:35:04,258 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 465 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:04,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 747 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:35:04,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2022-07-12 09:35:04,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1792. [2022-07-12 09:35:04,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1415 states have (on average 1.3201413427561837) internal successors, (1868), 1440 states have internal predecessors, (1868), 209 states have call successors, (209), 139 states have call predecessors, (209), 166 states have return successors, (257), 215 states have call predecessors, (257), 207 states have call successors, (257) [2022-07-12 09:35:04,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2334 transitions. [2022-07-12 09:35:04,318 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2334 transitions. Word has length 79 [2022-07-12 09:35:04,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:04,319 INFO L495 AbstractCegarLoop]: Abstraction has 1792 states and 2334 transitions. [2022-07-12 09:35:04,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:04,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2334 transitions. [2022-07-12 09:35:04,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:35:04,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:04,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:35:04,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:35:04,321 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:04,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:04,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1839354316, now seen corresponding path program 1 times [2022-07-12 09:35:04,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:04,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140533000] [2022-07-12 09:35:04,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:04,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:04,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:04,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:35:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:04,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:35:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:04,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:35:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:04,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:04,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:35:04,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:04,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140533000] [2022-07-12 09:35:04,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140533000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:04,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:04,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:35:04,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357925040] [2022-07-12 09:35:04,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:04,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:35:04,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:04,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:35:04,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:35:04,383 INFO L87 Difference]: Start difference. First operand 1792 states and 2334 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:05,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:05,095 INFO L93 Difference]: Finished difference Result 2160 states and 2901 transitions. [2022-07-12 09:35:05,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:35:05,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-07-12 09:35:05,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:05,102 INFO L225 Difference]: With dead ends: 2160 [2022-07-12 09:35:05,102 INFO L226 Difference]: Without dead ends: 2019 [2022-07-12 09:35:05,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:35:05,103 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 762 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:05,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 959 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:35:05,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2022-07-12 09:35:05,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 1934. [2022-07-12 09:35:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1538 states have (on average 1.336150845253576) internal successors, (2055), 1564 states have internal predecessors, (2055), 221 states have call successors, (221), 145 states have call predecessors, (221), 173 states have return successors, (272), 227 states have call predecessors, (272), 219 states have call successors, (272) [2022-07-12 09:35:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 2548 transitions. [2022-07-12 09:35:05,166 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 2548 transitions. Word has length 79 [2022-07-12 09:35:05,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:05,167 INFO L495 AbstractCegarLoop]: Abstraction has 1934 states and 2548 transitions. [2022-07-12 09:35:05,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:05,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 2548 transitions. [2022-07-12 09:35:05,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:35:05,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:05,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:35:05,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:35:05,169 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:05,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:05,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1602306120, now seen corresponding path program 1 times [2022-07-12 09:35:05,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:05,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584689337] [2022-07-12 09:35:05,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:05,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:05,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:05,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:35:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:05,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:35:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:05,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:35:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:05,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:35:05,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:05,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584689337] [2022-07-12 09:35:05,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584689337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:05,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:05,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:35:05,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073779769] [2022-07-12 09:35:05,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:05,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:35:05,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:05,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:35:05,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:35:05,237 INFO L87 Difference]: Start difference. First operand 1934 states and 2548 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:06,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:06,147 INFO L93 Difference]: Finished difference Result 2488 states and 3394 transitions. [2022-07-12 09:35:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:35:06,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 09:35:06,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:06,154 INFO L225 Difference]: With dead ends: 2488 [2022-07-12 09:35:06,154 INFO L226 Difference]: Without dead ends: 2205 [2022-07-12 09:35:06,155 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 [2022-07-12 09:35:06,157 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 756 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:06,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1466 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:35:06,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2022-07-12 09:35:06,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2067. [2022-07-12 09:35:06,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 1652 states have (on average 1.3462469733656175) internal successors, (2224), 1679 states have internal predecessors, (2224), 233 states have call successors, (233), 151 states have call predecessors, (233), 180 states have return successors, (286), 240 states have call predecessors, (286), 231 states have call successors, (286) [2022-07-12 09:35:06,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 2743 transitions. [2022-07-12 09:35:06,230 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 2743 transitions. Word has length 79 [2022-07-12 09:35:06,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:06,231 INFO L495 AbstractCegarLoop]: Abstraction has 2067 states and 2743 transitions. [2022-07-12 09:35:06,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:06,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 2743 transitions. [2022-07-12 09:35:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:35:06,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:06,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:35:06,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:35:06,234 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:06,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:06,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1656699018, now seen corresponding path program 1 times [2022-07-12 09:35:06,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:06,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428884971] [2022-07-12 09:35:06,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:06,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:06,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:06,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:35:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:06,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:35:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:06,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:35:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:35:06,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:06,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428884971] [2022-07-12 09:35:06,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428884971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:06,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:06,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:35:06,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580841074] [2022-07-12 09:35:06,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:06,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:35:06,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:06,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:35:06,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:35:06,294 INFO L87 Difference]: Start difference. First operand 2067 states and 2743 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:07,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:07,185 INFO L93 Difference]: Finished difference Result 2970 states and 4117 transitions. [2022-07-12 09:35:07,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:35:07,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 09:35:07,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:07,195 INFO L225 Difference]: With dead ends: 2970 [2022-07-12 09:35:07,196 INFO L226 Difference]: Without dead ends: 2554 [2022-07-12 09:35:07,197 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 [2022-07-12 09:35:07,198 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 793 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:07,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1149 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:35:07,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2022-07-12 09:35:07,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2334. [2022-07-12 09:35:07,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 1881 states have (on average 1.3625730994152048) internal successors, (2563), 1910 states have internal predecessors, (2563), 257 states have call successors, (257), 163 states have call predecessors, (257), 194 states have return successors, (318), 266 states have call predecessors, (318), 255 states have call successors, (318) [2022-07-12 09:35:07,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3138 transitions. [2022-07-12 09:35:07,278 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3138 transitions. Word has length 79 [2022-07-12 09:35:07,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:07,278 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3138 transitions. [2022-07-12 09:35:07,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:07,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3138 transitions. [2022-07-12 09:35:07,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:35:07,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:07,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:35:07,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:35:07,280 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:07,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:07,281 INFO L85 PathProgramCache]: Analyzing trace with hash -2074095624, now seen corresponding path program 1 times [2022-07-12 09:35:07,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:07,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983654714] [2022-07-12 09:35:07,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:07,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:07,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:07,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:35:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:07,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:35:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:35:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:35:07,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:07,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983654714] [2022-07-12 09:35:07,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983654714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:07,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:07,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:35:07,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034881] [2022-07-12 09:35:07,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:07,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:35:07,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:07,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:35:07,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:35:07,336 INFO L87 Difference]: Start difference. First operand 2334 states and 3138 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:08,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:08,260 INFO L93 Difference]: Finished difference Result 3901 states and 5512 transitions. [2022-07-12 09:35:08,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:35:08,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 09:35:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:08,270 INFO L225 Difference]: With dead ends: 3901 [2022-07-12 09:35:08,270 INFO L226 Difference]: Without dead ends: 3218 [2022-07-12 09:35:08,272 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 [2022-07-12 09:35:08,273 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 748 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:08,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 1456 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:35:08,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2022-07-12 09:35:08,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 2869. [2022-07-12 09:35:08,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2340 states have (on average 1.385042735042735) internal successors, (3241), 2373 states have internal predecessors, (3241), 305 states have call successors, (305), 187 states have call predecessors, (305), 222 states have return successors, (388), 318 states have call predecessors, (388), 303 states have call successors, (388) [2022-07-12 09:35:08,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 3934 transitions. [2022-07-12 09:35:08,393 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 3934 transitions. Word has length 79 [2022-07-12 09:35:08,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:08,393 INFO L495 AbstractCegarLoop]: Abstraction has 2869 states and 3934 transitions. [2022-07-12 09:35:08,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:08,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 3934 transitions. [2022-07-12 09:35:08,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:35:08,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:08,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:35:08,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:35:08,396 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:08,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:08,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1394823370, now seen corresponding path program 1 times [2022-07-12 09:35:08,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:08,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047969815] [2022-07-12 09:35:08,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:08,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:08,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:08,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:35:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:08,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:35:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:08,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:35:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:08,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:35:08,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:08,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047969815] [2022-07-12 09:35:08,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047969815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:08,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:08,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:35:08,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843617230] [2022-07-12 09:35:08,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:08,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:35:08,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:08,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:35:08,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:35:08,464 INFO L87 Difference]: Start difference. First operand 2869 states and 3934 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:08,997 INFO L93 Difference]: Finished difference Result 4433 states and 6327 transitions. [2022-07-12 09:35:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:35:08,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 09:35:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:09,006 INFO L225 Difference]: With dead ends: 4433 [2022-07-12 09:35:09,006 INFO L226 Difference]: Without dead ends: 3215 [2022-07-12 09:35:09,009 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 [2022-07-12 09:35:09,009 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 738 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:09,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 810 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:35:09,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2022-07-12 09:35:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 2869. [2022-07-12 09:35:09,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2340 states have (on average 1.3811965811965812) internal successors, (3232), 2373 states have internal predecessors, (3232), 305 states have call successors, (305), 187 states have call predecessors, (305), 222 states have return successors, (388), 318 states have call predecessors, (388), 303 states have call successors, (388) [2022-07-12 09:35:09,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 3925 transitions. [2022-07-12 09:35:09,110 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 3925 transitions. Word has length 79 [2022-07-12 09:35:09,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:09,110 INFO L495 AbstractCegarLoop]: Abstraction has 2869 states and 3925 transitions. [2022-07-12 09:35:09,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:09,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 3925 transitions. [2022-07-12 09:35:09,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:35:09,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:09,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:35:09,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:35:09,117 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:09,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:09,117 INFO L85 PathProgramCache]: Analyzing trace with hash 566751288, now seen corresponding path program 1 times [2022-07-12 09:35:09,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:09,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818817538] [2022-07-12 09:35:09,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:09,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:09,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:09,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:35:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:09,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:35:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:09,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:35:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:09,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:35:09,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:09,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818817538] [2022-07-12 09:35:09,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818817538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:09,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:09,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:35:09,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824296483] [2022-07-12 09:35:09,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:09,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:35:09,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:09,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:35:09,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:35:09,171 INFO L87 Difference]: Start difference. First operand 2869 states and 3925 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:10,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:10,217 INFO L93 Difference]: Finished difference Result 6063 states and 8712 transitions. [2022-07-12 09:35:10,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:35:10,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 09:35:10,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:10,230 INFO L225 Difference]: With dead ends: 6063 [2022-07-12 09:35:10,230 INFO L226 Difference]: Without dead ends: 4845 [2022-07-12 09:35:10,233 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 [2022-07-12 09:35:10,233 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 834 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:10,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1430 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:35:10,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2022-07-12 09:35:10,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 3888. [2022-07-12 09:35:10,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3888 states, 3215 states have (on average 1.4043545878693624) internal successors, (4515), 3256 states have internal predecessors, (4515), 393 states have call successors, (393), 235 states have call predecessors, (393), 278 states have return successors, (538), 414 states have call predecessors, (538), 391 states have call successors, (538) [2022-07-12 09:35:10,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3888 states to 3888 states and 5446 transitions. [2022-07-12 09:35:10,387 INFO L78 Accepts]: Start accepts. Automaton has 3888 states and 5446 transitions. Word has length 79 [2022-07-12 09:35:10,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:10,387 INFO L495 AbstractCegarLoop]: Abstraction has 3888 states and 5446 transitions. [2022-07-12 09:35:10,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:10,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3888 states and 5446 transitions. [2022-07-12 09:35:10,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:35:10,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:10,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:35:10,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:35:10,391 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:10,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:10,392 INFO L85 PathProgramCache]: Analyzing trace with hash 768575222, now seen corresponding path program 1 times [2022-07-12 09:35:10,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:10,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185415272] [2022-07-12 09:35:10,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:10,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:10,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:35:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:10,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:35:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:10,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:35:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:10,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:35:10,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:10,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185415272] [2022-07-12 09:35:10,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185415272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:10,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:10,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:35:10,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751986385] [2022-07-12 09:35:10,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:10,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:35:10,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:10,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:35:10,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:35:10,461 INFO L87 Difference]: Start difference. First operand 3888 states and 5446 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:11,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:11,510 INFO L93 Difference]: Finished difference Result 9456 states and 13819 transitions. [2022-07-12 09:35:11,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:35:11,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 09:35:11,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:11,528 INFO L225 Difference]: With dead ends: 9456 [2022-07-12 09:35:11,528 INFO L226 Difference]: Without dead ends: 7219 [2022-07-12 09:35:11,533 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 [2022-07-12 09:35:11,533 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 752 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:11,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1427 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:35:11,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7219 states. [2022-07-12 09:35:11,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7219 to 5971. [2022-07-12 09:35:11,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5971 states, 5018 states have (on average 1.4306496612196093) internal successors, (7179), 5075 states have internal predecessors, (7179), 561 states have call successors, (561), 331 states have call predecessors, (561), 390 states have return successors, (884), 598 states have call predecessors, (884), 559 states have call successors, (884) [2022-07-12 09:35:11,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5971 states to 5971 states and 8624 transitions. [2022-07-12 09:35:11,797 INFO L78 Accepts]: Start accepts. Automaton has 5971 states and 8624 transitions. Word has length 79 [2022-07-12 09:35:11,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:11,798 INFO L495 AbstractCegarLoop]: Abstraction has 5971 states and 8624 transitions. [2022-07-12 09:35:11,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:11,798 INFO L276 IsEmpty]: Start isEmpty. Operand 5971 states and 8624 transitions. [2022-07-12 09:35:11,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:35:11,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:11,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:35:11,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:35:11,801 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:11,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:11,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1202304308, now seen corresponding path program 1 times [2022-07-12 09:35:11,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:11,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379852480] [2022-07-12 09:35:11,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:11,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:11,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:11,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:35:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:11,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:35:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:11,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:35:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:11,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:35:11,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:11,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379852480] [2022-07-12 09:35:11,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379852480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:11,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:11,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:35:11,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379723250] [2022-07-12 09:35:11,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:11,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:35:11,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:11,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:35:11,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:35:11,869 INFO L87 Difference]: Start difference. First operand 5971 states and 8624 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:12,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:12,894 INFO L93 Difference]: Finished difference Result 13164 states and 19452 transitions. [2022-07-12 09:35:12,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:35:12,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 09:35:12,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:12,920 INFO L225 Difference]: With dead ends: 13164 [2022-07-12 09:35:12,921 INFO L226 Difference]: Without dead ends: 8845 [2022-07-12 09:35:12,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-12 09:35:12,931 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 469 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:12,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1234 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:35:12,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8845 states. [2022-07-12 09:35:13,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8845 to 6070. [2022-07-12 09:35:13,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6070 states, 5117 states have (on average 1.4223177643150284) internal successors, (7278), 5174 states have internal predecessors, (7278), 561 states have call successors, (561), 331 states have call predecessors, (561), 390 states have return successors, (884), 598 states have call predecessors, (884), 559 states have call successors, (884) [2022-07-12 09:35:13,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6070 states to 6070 states and 8723 transitions. [2022-07-12 09:35:13,209 INFO L78 Accepts]: Start accepts. Automaton has 6070 states and 8723 transitions. Word has length 79 [2022-07-12 09:35:13,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:13,209 INFO L495 AbstractCegarLoop]: Abstraction has 6070 states and 8723 transitions. [2022-07-12 09:35:13,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:13,210 INFO L276 IsEmpty]: Start isEmpty. Operand 6070 states and 8723 transitions. [2022-07-12 09:35:13,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:35:13,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:13,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:35:13,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:35:13,213 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:13,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:13,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1186785590, now seen corresponding path program 1 times [2022-07-12 09:35:13,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:13,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819807584] [2022-07-12 09:35:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:13,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:13,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:13,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:35:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:13,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:35:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:35:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:13,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:13,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:35:13,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:13,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819807584] [2022-07-12 09:35:13,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819807584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:13,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:13,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:35:13,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373407674] [2022-07-12 09:35:13,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:13,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:35:13,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:13,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:35:13,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:35:13,289 INFO L87 Difference]: Start difference. First operand 6070 states and 8723 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:15,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:15,283 INFO L93 Difference]: Finished difference Result 21285 states and 32208 transitions. [2022-07-12 09:35:15,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 09:35:15,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-12 09:35:15,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:15,321 INFO L225 Difference]: With dead ends: 21285 [2022-07-12 09:35:15,322 INFO L226 Difference]: Without dead ends: 16867 [2022-07-12 09:35:15,337 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 [2022-07-12 09:35:15,338 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 1727 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1754 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:15,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1754 Valid, 1300 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:35:15,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16867 states. [2022-07-12 09:35:15,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16867 to 14300. [2022-07-12 09:35:15,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14300 states, 12172 states have (on average 1.4375616168255012) internal successors, (17498), 12344 states have internal predecessors, (17498), 1270 states have call successors, (1270), 733 states have call predecessors, (1270), 856 states have return successors, (2269), 1256 states have call predecessors, (2269), 1268 states have call successors, (2269) [2022-07-12 09:35:16,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14300 states to 14300 states and 21037 transitions. [2022-07-12 09:35:16,081 INFO L78 Accepts]: Start accepts. Automaton has 14300 states and 21037 transitions. Word has length 79 [2022-07-12 09:35:16,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:16,081 INFO L495 AbstractCegarLoop]: Abstraction has 14300 states and 21037 transitions. [2022-07-12 09:35:16,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:16,082 INFO L276 IsEmpty]: Start isEmpty. Operand 14300 states and 21037 transitions. [2022-07-12 09:35:16,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:35:16,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:16,089 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] [2022-07-12 09:35:16,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:35:16,089 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:16,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:16,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1233946334, now seen corresponding path program 1 times [2022-07-12 09:35:16,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:16,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714466871] [2022-07-12 09:35:16,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:16,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:16,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:16,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:35:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:16,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:35:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:16,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:35:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:16,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:35:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:16,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:35:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:35:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:35:16,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:16,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714466871] [2022-07-12 09:35:16,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714466871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:16,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:16,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:35:16,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660979284] [2022-07-12 09:35:16,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:16,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:35:16,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:16,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:35:16,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:35:16,192 INFO L87 Difference]: Start difference. First operand 14300 states and 21037 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) [2022-07-12 09:35:17,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:17,348 INFO L93 Difference]: Finished difference Result 16125 states and 23439 transitions. [2022-07-12 09:35:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:35:17,348 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 [2022-07-12 09:35:17,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:17,379 INFO L225 Difference]: With dead ends: 16125 [2022-07-12 09:35:17,379 INFO L226 Difference]: Without dead ends: 14494 [2022-07-12 09:35:17,385 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 [2022-07-12 09:35:17,386 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 299 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:17,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 1620 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:35:17,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14494 states. [2022-07-12 09:35:18,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14494 to 14360. [2022-07-12 09:35:18,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14360 states, 12220 states have (on average 1.4353518821603928) internal successors, (17540), 12392 states have internal predecessors, (17540), 1270 states have call successors, (1270), 733 states have call predecessors, (1270), 868 states have return successors, (2281), 1268 states have call predecessors, (2281), 1268 states have call successors, (2281) [2022-07-12 09:35:18,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14360 states to 14360 states and 21091 transitions. [2022-07-12 09:35:18,055 INFO L78 Accepts]: Start accepts. Automaton has 14360 states and 21091 transitions. Word has length 91 [2022-07-12 09:35:18,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:18,056 INFO L495 AbstractCegarLoop]: Abstraction has 14360 states and 21091 transitions. [2022-07-12 09:35:18,056 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) [2022-07-12 09:35:18,056 INFO L276 IsEmpty]: Start isEmpty. Operand 14360 states and 21091 transitions. [2022-07-12 09:35:18,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:35:18,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:18,063 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] [2022-07-12 09:35:18,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:35:18,063 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:18,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:18,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1677847008, now seen corresponding path program 1 times [2022-07-12 09:35:18,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:18,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109442281] [2022-07-12 09:35:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:18,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:18,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:18,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:35:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:18,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:35:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:18,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:35:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:18,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:35:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:18,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:35:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:18,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:35:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:18,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:18,114 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:35:18,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:18,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109442281] [2022-07-12 09:35:18,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109442281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:18,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:18,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:35:18,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927969865] [2022-07-12 09:35:18,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:18,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:35:18,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:18,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:35:18,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:35:18,116 INFO L87 Difference]: Start difference. First operand 14360 states and 21091 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) [2022-07-12 09:35:19,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:19,250 INFO L93 Difference]: Finished difference Result 15887 states and 23055 transitions. [2022-07-12 09:35:19,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 09:35:19,251 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 [2022-07-12 09:35:19,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:19,284 INFO L225 Difference]: With dead ends: 15887 [2022-07-12 09:35:19,285 INFO L226 Difference]: Without dead ends: 14434 [2022-07-12 09:35:19,293 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 [2022-07-12 09:35:19,294 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 749 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:19,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 1364 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:35:19,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14434 states. [2022-07-12 09:35:19,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14434 to 14139. [2022-07-12 09:35:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14139 states, 12052 states have (on average 1.4372718221042151) internal successors, (17322), 12219 states have internal predecessors, (17322), 1242 states have call successors, (1242), 714 states have call predecessors, (1242), 843 states have return successors, (2241), 1238 states have call predecessors, (2241), 1240 states have call successors, (2241) [2022-07-12 09:35:20,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14139 states to 14139 states and 20805 transitions. [2022-07-12 09:35:20,008 INFO L78 Accepts]: Start accepts. Automaton has 14139 states and 20805 transitions. Word has length 91 [2022-07-12 09:35:20,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:20,009 INFO L495 AbstractCegarLoop]: Abstraction has 14139 states and 20805 transitions. [2022-07-12 09:35:20,009 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) [2022-07-12 09:35:20,009 INFO L276 IsEmpty]: Start isEmpty. Operand 14139 states and 20805 transitions. [2022-07-12 09:35:20,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:35:20,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:20,018 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] [2022-07-12 09:35:20,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:35:20,018 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:20,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:20,019 INFO L85 PathProgramCache]: Analyzing trace with hash -677958242, now seen corresponding path program 1 times [2022-07-12 09:35:20,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:20,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902161602] [2022-07-12 09:35:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:20,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:20,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:20,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:35:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:20,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:35:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:20,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:35:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:20,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:35:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:20,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:35:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:20,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:35:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:20,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:35:20,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:20,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902161602] [2022-07-12 09:35:20,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902161602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:20,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:20,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:35:20,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741248704] [2022-07-12 09:35:20,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:20,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:35:20,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:35:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:35:20,075 INFO L87 Difference]: Start difference. First operand 14139 states and 20805 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) [2022-07-12 09:35:21,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:21,131 INFO L93 Difference]: Finished difference Result 17291 states and 24917 transitions. [2022-07-12 09:35:21,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:35:21,131 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 [2022-07-12 09:35:21,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:21,173 INFO L225 Difference]: With dead ends: 17291 [2022-07-12 09:35:21,173 INFO L226 Difference]: Without dead ends: 15822 [2022-07-12 09:35:21,185 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 [2022-07-12 09:35:21,186 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 838 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:21,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 953 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:35:21,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15822 states. [2022-07-12 09:35:21,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15822 to 15608. [2022-07-12 09:35:21,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15608 states, 13201 states have (on average 1.4203469434133777) internal successors, (18750), 13397 states have internal predecessors, (18750), 1403 states have call successors, (1403), 827 states have call predecessors, (1403), 1002 states have return successors, (2524), 1417 states have call predecessors, (2524), 1401 states have call successors, (2524) [2022-07-12 09:35:21,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15608 states to 15608 states and 22677 transitions. [2022-07-12 09:35:21,955 INFO L78 Accepts]: Start accepts. Automaton has 15608 states and 22677 transitions. Word has length 91 [2022-07-12 09:35:21,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:21,955 INFO L495 AbstractCegarLoop]: Abstraction has 15608 states and 22677 transitions. [2022-07-12 09:35:21,955 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) [2022-07-12 09:35:21,955 INFO L276 IsEmpty]: Start isEmpty. Operand 15608 states and 22677 transitions. [2022-07-12 09:35:21,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:35:21,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:21,963 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] [2022-07-12 09:35:21,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:35:21,964 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:21,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:21,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1735796320, now seen corresponding path program 1 times [2022-07-12 09:35:21,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:21,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643783042] [2022-07-12 09:35:21,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:21,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:21,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:21,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:35:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:21,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:35:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:21,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:35:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:21,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:35:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:22,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:35:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:22,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:35:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:22,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:35:22,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:22,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643783042] [2022-07-12 09:35:22,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643783042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:22,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:22,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:35:22,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514258012] [2022-07-12 09:35:22,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:22,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:35:22,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:22,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:35:22,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:35:22,006 INFO L87 Difference]: Start difference. First operand 15608 states and 22677 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) [2022-07-12 09:35:22,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:22,839 INFO L93 Difference]: Finished difference Result 17192 states and 24661 transitions. [2022-07-12 09:35:22,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 09:35:22,840 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 [2022-07-12 09:35:22,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:22,866 INFO L225 Difference]: With dead ends: 17192 [2022-07-12 09:35:22,867 INFO L226 Difference]: Without dead ends: 14254 [2022-07-12 09:35:22,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:35:22,873 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 414 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:22,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 949 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:35:22,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14254 states. [2022-07-12 09:35:23,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14254 to 14139. [2022-07-12 09:35:23,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14139 states, 12052 states have (on average 1.434201792233654) internal successors, (17285), 12219 states have internal predecessors, (17285), 1242 states have call successors, (1242), 714 states have call predecessors, (1242), 843 states have return successors, (2241), 1238 states have call predecessors, (2241), 1240 states have call successors, (2241) [2022-07-12 09:35:23,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14139 states to 14139 states and 20768 transitions. [2022-07-12 09:35:23,494 INFO L78 Accepts]: Start accepts. Automaton has 14139 states and 20768 transitions. Word has length 91 [2022-07-12 09:35:23,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:23,494 INFO L495 AbstractCegarLoop]: Abstraction has 14139 states and 20768 transitions. [2022-07-12 09:35:23,494 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) [2022-07-12 09:35:23,494 INFO L276 IsEmpty]: Start isEmpty. Operand 14139 states and 20768 transitions. [2022-07-12 09:35:23,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 09:35:23,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:23,500 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] [2022-07-12 09:35:23,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:35:23,501 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:23,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:23,501 INFO L85 PathProgramCache]: Analyzing trace with hash -855388424, now seen corresponding path program 1 times [2022-07-12 09:35:23,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:23,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070503951] [2022-07-12 09:35:23,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:23,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:23,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:23,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:35:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:23,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:35:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:23,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:35:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:23,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:35:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:23,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:35:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:23,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:35:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:23,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 09:35:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:35:23,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:23,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070503951] [2022-07-12 09:35:23,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070503951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:23,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:23,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:35:23,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117921716] [2022-07-12 09:35:23,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:23,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:35:23,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:23,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:35:23,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:35:23,557 INFO L87 Difference]: Start difference. First operand 14139 states and 20768 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:35:24,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:24,978 INFO L93 Difference]: Finished difference Result 16557 states and 23851 transitions. [2022-07-12 09:35:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 09:35:24,978 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 [2022-07-12 09:35:24,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:25,014 INFO L225 Difference]: With dead ends: 16557 [2022-07-12 09:35:25,014 INFO L226 Difference]: Without dead ends: 14937 [2022-07-12 09:35:25,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-12 09:35:25,025 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 1602 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:25,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1636 Valid, 1246 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:35:25,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14937 states. [2022-07-12 09:35:25,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14937 to 14760. [2022-07-12 09:35:25,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14760 states, 12519 states have (on average 1.4239955267992652) internal successors, (17827), 12694 states have internal predecessors, (17827), 1319 states have call successors, (1319), 762 states have call predecessors, (1319), 920 states have return successors, (2372), 1336 states have call predecessors, (2372), 1317 states have call successors, (2372) [2022-07-12 09:35:25,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14760 states to 14760 states and 21518 transitions. [2022-07-12 09:35:25,675 INFO L78 Accepts]: Start accepts. Automaton has 14760 states and 21518 transitions. Word has length 92 [2022-07-12 09:35:25,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:25,676 INFO L495 AbstractCegarLoop]: Abstraction has 14760 states and 21518 transitions. [2022-07-12 09:35:25,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:35:25,676 INFO L276 IsEmpty]: Start isEmpty. Operand 14760 states and 21518 transitions. [2022-07-12 09:35:25,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-12 09:35:25,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:25,693 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, 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] [2022-07-12 09:35:25,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:35:25,693 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:25,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:25,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1308432902, now seen corresponding path program 1 times [2022-07-12 09:35:25,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:25,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412646947] [2022-07-12 09:35:25,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:25,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:25,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:25,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:35:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:25,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:35:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:25,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:35:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:25,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:25,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:35:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:25,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:35:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:25,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 09:35:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:25,752 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 09:35:25,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:25,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412646947] [2022-07-12 09:35:25,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412646947] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:35:25,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277845408] [2022-07-12 09:35:25,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:25,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:35:25,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:35:25,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:35:25,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:35:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:25,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:35:25,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:35:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 09:35:25,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:35:25,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277845408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:25,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:35:25,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 09:35:25,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816124685] [2022-07-12 09:35:25,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:25,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:35:25,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:25,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:35:25,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:35:25,905 INFO L87 Difference]: Start difference. First operand 14760 states and 21518 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:35:27,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:27,230 INFO L93 Difference]: Finished difference Result 39531 states and 59114 transitions. [2022-07-12 09:35:27,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:35:27,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-07-12 09:35:27,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:27,303 INFO L225 Difference]: With dead ends: 39531 [2022-07-12 09:35:27,304 INFO L226 Difference]: Without dead ends: 26883 [2022-07-12 09:35:27,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:35:27,340 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 315 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 574 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 [2022-07-12 09:35:27,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 574 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:35:27,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26883 states. [2022-07-12 09:35:28,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26883 to 26681. [2022-07-12 09:35:28,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26681 states, 22786 states have (on average 1.4362766611076978) internal successors, (32727), 23108 states have internal predecessors, (32727), 2285 states have call successors, (2285), 1354 states have call predecessors, (2285), 1608 states have return successors, (4207), 2251 states have call predecessors, (4207), 2283 states have call successors, (4207) [2022-07-12 09:35:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26681 states to 26681 states and 39219 transitions. [2022-07-12 09:35:28,753 INFO L78 Accepts]: Start accepts. Automaton has 26681 states and 39219 transitions. Word has length 128 [2022-07-12 09:35:28,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:28,754 INFO L495 AbstractCegarLoop]: Abstraction has 26681 states and 39219 transitions. [2022-07-12 09:35:28,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:35:28,754 INFO L276 IsEmpty]: Start isEmpty. Operand 26681 states and 39219 transitions. [2022-07-12 09:35:28,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-12 09:35:28,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:28,782 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, 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] [2022-07-12 09:35:28,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:35:28,982 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,SelfDestructingSolverStorable20 [2022-07-12 09:35:28,983 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:28,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:28,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1559953626, now seen corresponding path program 1 times [2022-07-12 09:35:28,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:28,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301749230] [2022-07-12 09:35:28,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:28,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:29,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:29,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:35:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:29,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:35:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:29,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:35:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:29,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:29,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:35:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:29,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:35:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:29,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 09:35:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:29,065 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 09:35:29,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:29,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301749230] [2022-07-12 09:35:29,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301749230] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:35:29,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035049774] [2022-07-12 09:35:29,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:29,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:35:29,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:35:29,067 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) [2022-07-12 09:35:29,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 09:35:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:29,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:35:29,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:35:29,287 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 09:35:29,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:35:29,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035049774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:29,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:35:29,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 09:35:29,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613652424] [2022-07-12 09:35:29,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:29,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:35:29,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:29,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:35:29,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:35:29,290 INFO L87 Difference]: Start difference. First operand 26681 states and 39219 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2022-07-12 09:35:31,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:31,354 INFO L93 Difference]: Finished difference Result 74808 states and 111484 transitions. [2022-07-12 09:35:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:35:31,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 128 [2022-07-12 09:35:31,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:31,421 INFO L225 Difference]: With dead ends: 74808 [2022-07-12 09:35:31,421 INFO L226 Difference]: Without dead ends: 30940 [2022-07-12 09:35:31,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:35:31,474 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 192 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 926 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 [2022-07-12 09:35:31,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 926 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:35:31,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30940 states. [2022-07-12 09:35:32,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30940 to 30940. [2022-07-12 09:35:32,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30940 states, 26466 states have (on average 1.4363711932290486) internal successors, (38015), 26820 states have internal predecessors, (38015), 2628 states have call successors, (2628), 1558 states have call predecessors, (2628), 1844 states have return successors, (4853), 2594 states have call predecessors, (4853), 2626 states have call successors, (4853) [2022-07-12 09:35:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30940 states to 30940 states and 45496 transitions. [2022-07-12 09:35:32,824 INFO L78 Accepts]: Start accepts. Automaton has 30940 states and 45496 transitions. Word has length 128 [2022-07-12 09:35:32,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:32,824 INFO L495 AbstractCegarLoop]: Abstraction has 30940 states and 45496 transitions. [2022-07-12 09:35:32,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2022-07-12 09:35:32,825 INFO L276 IsEmpty]: Start isEmpty. Operand 30940 states and 45496 transitions. [2022-07-12 09:35:32,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-12 09:35:32,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:32,863 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] [2022-07-12 09:35:32,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:35:33,075 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,SelfDestructingSolverStorable21 [2022-07-12 09:35:33,075 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:33,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:33,076 INFO L85 PathProgramCache]: Analyzing trace with hash 839593669, now seen corresponding path program 1 times [2022-07-12 09:35:33,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:33,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514338082] [2022-07-12 09:35:33,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:33,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:35:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:35:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:35:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:35:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:35:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:35:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 09:35:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:35:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 09:35:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:35:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:35:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:35:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:35:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 09:35:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:35:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 09:35:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-12 09:35:33,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:33,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514338082] [2022-07-12 09:35:33,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514338082] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:35:33,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550413778] [2022-07-12 09:35:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:33,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:35:33,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:35:33,164 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) [2022-07-12 09:35:33,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 09:35:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:33,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:35:33,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:35:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-12 09:35:33,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:35:33,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550413778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:33,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:35:33,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-12 09:35:33,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256056817] [2022-07-12 09:35:33,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:33,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:35:33,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:33,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:35:33,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:35:33,366 INFO L87 Difference]: Start difference. First operand 30940 states and 45496 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) [2022-07-12 09:35:34,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:34,618 INFO L93 Difference]: Finished difference Result 34866 states and 50325 transitions. [2022-07-12 09:35:34,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:35:34,618 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 [2022-07-12 09:35:34,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:34,701 INFO L225 Difference]: With dead ends: 34866 [2022-07-12 09:35:34,701 INFO L226 Difference]: Without dead ends: 32852 [2022-07-12 09:35:34,721 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 [2022-07-12 09:35:34,722 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 61 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 727 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 [2022-07-12 09:35:34,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 727 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:35:34,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32852 states. [2022-07-12 09:35:36,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32852 to 32810. [2022-07-12 09:35:36,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32810 states, 27923 states have (on average 1.424238083300505) internal successors, (39769), 28300 states have internal predecessors, (39769), 2835 states have call successors, (2835), 1719 states have call predecessors, (2835), 2050 states have return successors, (5121), 2823 states have call predecessors, (5121), 2833 states have call successors, (5121) [2022-07-12 09:35:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32810 states to 32810 states and 47725 transitions. [2022-07-12 09:35:36,409 INFO L78 Accepts]: Start accepts. Automaton has 32810 states and 47725 transitions. Word has length 163 [2022-07-12 09:35:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:36,410 INFO L495 AbstractCegarLoop]: Abstraction has 32810 states and 47725 transitions. [2022-07-12 09:35:36,410 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) [2022-07-12 09:35:36,410 INFO L276 IsEmpty]: Start isEmpty. Operand 32810 states and 47725 transitions. [2022-07-12 09:35:36,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-12 09:35:36,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:36,451 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:35:36,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 09:35:36,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:35:36,663 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:36,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:36,664 INFO L85 PathProgramCache]: Analyzing trace with hash 675100022, now seen corresponding path program 1 times [2022-07-12 09:35:36,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:36,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259855065] [2022-07-12 09:35:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:36,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:36,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:36,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:35:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:36,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:35:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:36,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:35:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:36,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:36,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:35:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:36,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:35:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:36,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 09:35:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:36,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:35:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 09:35:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:36,795 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-12 09:35:36,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:36,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259855065] [2022-07-12 09:35:36,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259855065] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:35:36,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898702227] [2022-07-12 09:35:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:36,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:35:36,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:35:36,797 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) [2022-07-12 09:35:36,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 09:35:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:36,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:35:36,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:35:37,011 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 09:35:37,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:35:37,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898702227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:37,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:35:37,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 09:35:37,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35171080] [2022-07-12 09:35:37,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:37,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:35:37,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:37,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:35:37,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:35:37,014 INFO L87 Difference]: Start difference. First operand 32810 states and 47725 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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) [2022-07-12 09:35:39,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:39,700 INFO L93 Difference]: Finished difference Result 89607 states and 133586 transitions. [2022-07-12 09:35:39,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:35:39,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 166 [2022-07-12 09:35:39,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:39,862 INFO L225 Difference]: With dead ends: 89607 [2022-07-12 09:35:39,863 INFO L226 Difference]: Without dead ends: 60779 [2022-07-12 09:35:39,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:35:39,928 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 269 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 573 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 [2022-07-12 09:35:39,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 573 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:35:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60779 states. [2022-07-12 09:35:42,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60779 to 60309. [2022-07-12 09:35:42,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60309 states, 51557 states have (on average 1.43289950928099) internal successors, (73876), 52260 states have internal predecessors, (73876), 5088 states have call successors, (5088), 3107 states have call predecessors, (5088), 3662 states have return successors, (9394), 4974 states have call predecessors, (9394), 5086 states have call successors, (9394) [2022-07-12 09:35:42,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60309 states to 60309 states and 88358 transitions. [2022-07-12 09:35:42,870 INFO L78 Accepts]: Start accepts. Automaton has 60309 states and 88358 transitions. Word has length 166 [2022-07-12 09:35:42,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:42,871 INFO L495 AbstractCegarLoop]: Abstraction has 60309 states and 88358 transitions. [2022-07-12 09:35:42,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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) [2022-07-12 09:35:42,871 INFO L276 IsEmpty]: Start isEmpty. Operand 60309 states and 88358 transitions. [2022-07-12 09:35:42,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-12 09:35:42,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:42,943 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:35:42,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 09:35:43,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:35:43,144 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:43,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:43,145 INFO L85 PathProgramCache]: Analyzing trace with hash -37312834, now seen corresponding path program 1 times [2022-07-12 09:35:43,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:43,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008696451] [2022-07-12 09:35:43,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:43,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:43,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:43,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:35:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:43,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:35:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:43,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:35:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:43,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:43,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:35:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:43,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:35:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:43,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 09:35:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:43,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:35:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:43,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 09:35:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-12 09:35:43,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:43,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008696451] [2022-07-12 09:35:43,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008696451] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:35:43,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725638987] [2022-07-12 09:35:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:43,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:35:43,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:35:43,214 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) [2022-07-12 09:35:43,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 09:35:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:43,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:35:43,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:35:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 09:35:43,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:35:43,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725638987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:43,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:35:43,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 09:35:43,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153509257] [2022-07-12 09:35:43,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:43,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:35:43,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:43,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:35:43,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:35:43,411 INFO L87 Difference]: Start difference. First operand 60309 states and 88358 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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) [2022-07-12 09:35:47,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:47,232 INFO L93 Difference]: Finished difference Result 118682 states and 175958 transitions. [2022-07-12 09:35:47,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:35:47,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 166 [2022-07-12 09:35:47,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:47,433 INFO L225 Difference]: With dead ends: 118682 [2022-07-12 09:35:47,433 INFO L226 Difference]: Without dead ends: 85076 [2022-07-12 09:35:47,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:35:47,615 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 270 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 582 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 [2022-07-12 09:35:47,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 582 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:35:47,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85076 states. [2022-07-12 09:35:51,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85076 to 84402. [2022-07-12 09:35:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84402 states, 72348 states have (on average 1.4367639741250622) internal successors, (103947), 73311 states have internal predecessors, (103947), 6999 states have call successors, (6999), 4306 states have call predecessors, (6999), 5053 states have return successors, (12716), 6817 states have call predecessors, (12716), 6997 states have call successors, (12716) [2022-07-12 09:35:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84402 states to 84402 states and 123662 transitions. [2022-07-12 09:35:51,956 INFO L78 Accepts]: Start accepts. Automaton has 84402 states and 123662 transitions. Word has length 166 [2022-07-12 09:35:51,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:51,956 INFO L495 AbstractCegarLoop]: Abstraction has 84402 states and 123662 transitions. [2022-07-12 09:35:51,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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) [2022-07-12 09:35:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand 84402 states and 123662 transitions. [2022-07-12 09:35:52,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-12 09:35:52,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:52,058 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, 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] [2022-07-12 09:35:52,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 09:35:52,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-12 09:35:52,259 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:52,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:52,259 INFO L85 PathProgramCache]: Analyzing trace with hash -539839329, now seen corresponding path program 1 times [2022-07-12 09:35:52,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:52,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933098222] [2022-07-12 09:35:52,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:52,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:52,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:52,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:35:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:52,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:35:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:52,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:35:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:35:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:52,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 09:35:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:52,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:35:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:52,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:35:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:52,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 09:35:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:52,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:35:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:52,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 09:35:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-12 09:35:52,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:52,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933098222] [2022-07-12 09:35:52,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933098222] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:35:52,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712404960] [2022-07-12 09:35:52,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:52,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:35:52,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:35:52,348 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) [2022-07-12 09:35:52,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 09:35:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:52,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:35:52,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:35:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:35:52,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:35:52,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712404960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:52,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:35:52,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 09:35:52,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100617591] [2022-07-12 09:35:52,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:52,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:35:52,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:52,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:35:52,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:35:52,510 INFO L87 Difference]: Start difference. First operand 84402 states and 123662 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2022-07-12 09:35:57,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:57,039 INFO L93 Difference]: Finished difference Result 158998 states and 234985 transitions. [2022-07-12 09:35:57,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:35:57,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 184 [2022-07-12 09:35:57,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:57,400 INFO L225 Difference]: With dead ends: 158998 [2022-07-12 09:35:57,400 INFO L226 Difference]: Without dead ends: 78579 [2022-07-12 09:35:57,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:35:57,517 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 292 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 407 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 [2022-07-12 09:35:57,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 407 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:35:57,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78579 states.