./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b18a76c867b23fc238210d30f7146aaa10cc52d26bc0f62c42cd3676dc575e59 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:28:40,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:28:40,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:28:40,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:28:40,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:28:40,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:28:40,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:28:40,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:28:40,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:28:40,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:28:40,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:28:40,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:28:40,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:28:40,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:28:40,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:28:40,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:28:40,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:28:40,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:28:40,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:28:40,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:28:40,601 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:28:40,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:28:40,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:28:40,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:28:40,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:28:40,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:28:40,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:28:40,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:28:40,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:28:40,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:28:40,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:28:40,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:28:40,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:28:40,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:28:40,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:28:40,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:28:40,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:28:40,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:28:40,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:28:40,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:28:40,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:28:40,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:28:40,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:28:40,654 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:28:40,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:28:40,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:28:40,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:28:40,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:28:40,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:28:40,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:28:40,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:28:40,657 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:28:40,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:28:40,658 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:28:40,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:28:40,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:28:40,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:28:40,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:28:40,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:28:40,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:28:40,660 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:28:40,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:28:40,660 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:28:40,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:28:40,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:28:40,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:28:40,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:28:40,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:28:40,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:28:40,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:28:40,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:28:40,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:28:40,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:28:40,663 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:28:40,663 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:28:40,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:28:40,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b18a76c867b23fc238210d30f7146aaa10cc52d26bc0f62c42cd3676dc575e59 [2022-07-22 19:28:40,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:28:40,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:28:40,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:28:40,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:28:40,875 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:28:40,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c [2022-07-22 19:28:40,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31768d19f/87d5f86eb233441ea0e42fce91f4fcf5/FLAG7d483b1f9 [2022-07-22 19:28:41,739 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:28:41,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c [2022-07-22 19:28:41,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31768d19f/87d5f86eb233441ea0e42fce91f4fcf5/FLAG7d483b1f9 [2022-07-22 19:28:42,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31768d19f/87d5f86eb233441ea0e42fce91f4fcf5 [2022-07-22 19:28:42,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:28:42,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:28:42,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:28:42,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:28:42,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:28:42,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:28:42" (1/1) ... [2022-07-22 19:28:42,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc0558e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:42, skipping insertion in model container [2022-07-22 19:28:42,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:28:42" (1/1) ... [2022-07-22 19:28:42,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:28:42,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:28:43,969 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/Problem05_label41+token_ring.04.cil-1.c[376251,376264] [2022-07-22 19:28:43,997 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/Problem05_label41+token_ring.04.cil-1.c[383339,383352] [2022-07-22 19:28:44,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:28:44,149 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:28:44,870 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/Problem05_label41+token_ring.04.cil-1.c[376251,376264] [2022-07-22 19:28:44,877 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/Problem05_label41+token_ring.04.cil-1.c[383339,383352] [2022-07-22 19:28:44,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:28:44,960 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:28:44,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:44 WrapperNode [2022-07-22 19:28:44,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:28:44,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:28:44,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:28:44,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:28:44,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:44" (1/1) ... [2022-07-22 19:28:45,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:44" (1/1) ... [2022-07-22 19:28:45,521 INFO L137 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12735 [2022-07-22 19:28:45,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:28:45,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:28:45,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:28:45,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:28:45,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:44" (1/1) ... [2022-07-22 19:28:45,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:44" (1/1) ... [2022-07-22 19:28:45,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:44" (1/1) ... [2022-07-22 19:28:45,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:44" (1/1) ... [2022-07-22 19:28:46,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:44" (1/1) ... [2022-07-22 19:28:46,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:44" (1/1) ... [2022-07-22 19:28:46,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:44" (1/1) ... [2022-07-22 19:28:46,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:28:46,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:28:46,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:28:46,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:28:46,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:44" (1/1) ... [2022-07-22 19:28:46,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:28:46,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:28:46,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 19:28:46,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 19:28:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:28:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:28:46,205 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:28:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:28:46,205 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:28:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:28:46,205 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:28:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:28:46,205 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:28:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:28:46,206 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:28:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:28:46,241 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:28:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:28:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:28:46,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:28:46,328 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:28:46,329 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:28:52,096 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:28:52,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:28:52,129 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-22 19:28:52,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:28:52 BoogieIcfgContainer [2022-07-22 19:28:52,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:28:52,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:28:52,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:28:52,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:28:52,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:28:42" (1/3) ... [2022-07-22 19:28:52,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4004b157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:28:52, skipping insertion in model container [2022-07-22 19:28:52,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:44" (2/3) ... [2022-07-22 19:28:52,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4004b157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:28:52, skipping insertion in model container [2022-07-22 19:28:52,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:28:52" (3/3) ... [2022-07-22 19:28:52,145 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.04.cil-1.c [2022-07-22 19:28:52,157 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:28:52,157 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:28:52,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:28:52,257 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@3916af61, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70c64c2b [2022-07-22 19:28:52,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:28:52,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-22 19:28:52,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:28:52,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:28:52,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:28:52,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:28:52,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:28:52,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2022-07-22 19:28:52,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:28:52,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865202289] [2022-07-22 19:28:52,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:28:52,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:28:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:52,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:28:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:52,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:28:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:52,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:28:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:52,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:28:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:52,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:28:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:28:52,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:28:52,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865202289] [2022-07-22 19:28:52,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865202289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:28:52,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:28:52,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:28:52,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926571386] [2022-07-22 19:28:52,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:28:52,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:28:52,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:28:52,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:28:52,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:28:52,617 INFO L87 Difference]: Start difference. First operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-07-22 19:28:53,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:28:53,487 INFO L93 Difference]: Finished difference Result 4778 states and 8824 transitions. [2022-07-22 19:28:53,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:28:53,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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 90 [2022-07-22 19:28:53,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:28:53,510 INFO L225 Difference]: With dead ends: 4778 [2022-07-22 19:28:53,511 INFO L226 Difference]: Without dead ends: 2352 [2022-07-22 19:28:53,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:28:53,524 INFO L413 NwaCegarLoop]: 4315 mSDtfsCounter, 434 mSDsluCounter, 12257 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 16572 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:28:53,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 16572 Invalid, 343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 19:28:53,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2022-07-22 19:28:53,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2298. [2022-07-22 19:28:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2272 states have (on average 1.8433098591549295) internal successors, (4188), 2274 states have internal predecessors, (4188), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-22 19:28:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4224 transitions. [2022-07-22 19:28:53,647 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4224 transitions. Word has length 90 [2022-07-22 19:28:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:28:53,648 INFO L495 AbstractCegarLoop]: Abstraction has 2298 states and 4224 transitions. [2022-07-22 19:28:53,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-07-22 19:28:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4224 transitions. [2022-07-22 19:28:53,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:28:53,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:28:53,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:28:53,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:28:53,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:28:53,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:28:53,658 INFO L85 PathProgramCache]: Analyzing trace with hash -295791530, now seen corresponding path program 1 times [2022-07-22 19:28:53,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:28:53,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111910154] [2022-07-22 19:28:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:28:53,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:28:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:53,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:28:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:53,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:28:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:53,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:28:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:53,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:28:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:53,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:28:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:53,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:28:53,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:28:53,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111910154] [2022-07-22 19:28:53,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111910154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:28:53,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:28:53,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:28:53,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563834285] [2022-07-22 19:28:53,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:28:53,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:28:53,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:28:53,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:28:53,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:28:53,884 INFO L87 Difference]: Start difference. First operand 2298 states and 4224 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:28:54,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:28:54,994 INFO L93 Difference]: Finished difference Result 2738 states and 4911 transitions. [2022-07-22 19:28:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:28:54,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2022-07-22 19:28:54,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:28:55,006 INFO L225 Difference]: With dead ends: 2738 [2022-07-22 19:28:55,007 INFO L226 Difference]: Without dead ends: 2573 [2022-07-22 19:28:55,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:28:55,010 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 4590 mSDsluCounter, 12314 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 16580 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:28:55,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4601 Valid, 16580 Invalid, 931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 19:28:55,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2022-07-22 19:28:55,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2466. [2022-07-22 19:28:55,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.824793388429752) internal successors, (4416), 2423 states have internal predecessors, (4416), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2022-07-22 19:28:55,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4481 transitions. [2022-07-22 19:28:55,074 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4481 transitions. Word has length 90 [2022-07-22 19:28:55,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:28:55,075 INFO L495 AbstractCegarLoop]: Abstraction has 2466 states and 4481 transitions. [2022-07-22 19:28:55,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:28:55,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4481 transitions. [2022-07-22 19:28:55,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:28:55,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:28:55,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:28:55,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:28:55,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:28:55,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:28:55,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1470450982, now seen corresponding path program 1 times [2022-07-22 19:28:55,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:28:55,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844405616] [2022-07-22 19:28:55,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:28:55,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:28:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:55,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:28:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:55,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:28:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:55,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:28:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:55,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:28:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:55,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:28:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:28:55,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:28:55,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844405616] [2022-07-22 19:28:55,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844405616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:28:55,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:28:55,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:28:55,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097901849] [2022-07-22 19:28:55,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:28:55,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:28:55,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:28:55,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:28:55,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:28:55,194 INFO L87 Difference]: Start difference. First operand 2466 states and 4481 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:28:56,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:28:56,576 INFO L93 Difference]: Finished difference Result 3131 states and 5513 transitions. [2022-07-22 19:28:56,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:28:56,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-22 19:28:56,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:28:56,587 INFO L225 Difference]: With dead ends: 3131 [2022-07-22 19:28:56,587 INFO L226 Difference]: Without dead ends: 2798 [2022-07-22 19:28:56,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:28:56,590 INFO L413 NwaCegarLoop]: 4389 mSDtfsCounter, 4588 mSDsluCounter, 16680 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4599 SdHoareTripleChecker+Valid, 21069 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:28:56,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4599 Valid, 21069 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 19:28:56,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-07-22 19:28:56,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2623. [2022-07-22 19:28:56,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 2557 states have (on average 1.8075870160344154) internal successors, (4622), 2561 states have internal predecessors, (4622), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-22 19:28:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 4715 transitions. [2022-07-22 19:28:56,649 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 4715 transitions. Word has length 90 [2022-07-22 19:28:56,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:28:56,649 INFO L495 AbstractCegarLoop]: Abstraction has 2623 states and 4715 transitions. [2022-07-22 19:28:56,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:28:56,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 4715 transitions. [2022-07-22 19:28:56,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:28:56,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:28:56,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:28:56,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:28:56,652 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:28:56,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:28:56,652 INFO L85 PathProgramCache]: Analyzing trace with hash -583228136, now seen corresponding path program 1 times [2022-07-22 19:28:56,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:28:56,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442457434] [2022-07-22 19:28:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:28:56,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:28:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:56,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:28:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:56,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:28:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:56,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:28:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:56,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:28:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:56,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:28:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:28:56,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:28:56,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442457434] [2022-07-22 19:28:56,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442457434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:28:56,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:28:56,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:28:56,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786984872] [2022-07-22 19:28:56,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:28:56,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:28:56,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:28:56,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:28:56,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:28:56,738 INFO L87 Difference]: Start difference. First operand 2623 states and 4715 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:28:57,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:28:57,918 INFO L93 Difference]: Finished difference Result 3709 states and 6395 transitions. [2022-07-22 19:28:57,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:28:57,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-22 19:28:57,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:28:57,933 INFO L225 Difference]: With dead ends: 3709 [2022-07-22 19:28:57,934 INFO L226 Difference]: Without dead ends: 3219 [2022-07-22 19:28:57,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:28:57,942 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 4633 mSDsluCounter, 16410 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4644 SdHoareTripleChecker+Valid, 20688 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:28:57,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4644 Valid, 20688 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 19:28:57,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2022-07-22 19:28:58,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 2938. [2022-07-22 19:28:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2832 states have (on average 1.7778954802259888) internal successors, (5035), 2838 states have internal predecessors, (5035), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2022-07-22 19:28:58,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 5188 transitions. [2022-07-22 19:28:58,021 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 5188 transitions. Word has length 90 [2022-07-22 19:28:58,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:28:58,022 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 5188 transitions. [2022-07-22 19:28:58,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:28:58,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 5188 transitions. [2022-07-22 19:28:58,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:28:58,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:28:58,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:28:58,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:28:58,024 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:28:58,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:28:58,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1800696602, now seen corresponding path program 1 times [2022-07-22 19:28:58,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:28:58,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852125527] [2022-07-22 19:28:58,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:28:58,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:28:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:58,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:28:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:58,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:28:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:58,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:28:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:58,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:28:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:58,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:28:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:28:58,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:28:58,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852125527] [2022-07-22 19:28:58,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852125527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:28:58,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:28:58,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:28:58,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647282260] [2022-07-22 19:28:58,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:28:58,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:28:58,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:28:58,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:28:58,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:28:58,111 INFO L87 Difference]: Start difference. First operand 2938 states and 5188 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:28:59,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:28:59,382 INFO L93 Difference]: Finished difference Result 4824 states and 8092 transitions. [2022-07-22 19:28:59,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:28:59,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-22 19:28:59,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:28:59,400 INFO L225 Difference]: With dead ends: 4824 [2022-07-22 19:28:59,400 INFO L226 Difference]: Without dead ends: 4019 [2022-07-22 19:28:59,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:28:59,404 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 4583 mSDsluCounter, 16680 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 21057 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:28:59,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4594 Valid, 21057 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 19:28:59,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2022-07-22 19:28:59,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 3569. [2022-07-22 19:28:59,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3569 states, 3383 states have (on average 1.7324859592078037) internal successors, (5861), 3393 states have internal predecessors, (5861), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2022-07-22 19:28:59,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3569 states to 3569 states and 6140 transitions. [2022-07-22 19:28:59,527 INFO L78 Accepts]: Start accepts. Automaton has 3569 states and 6140 transitions. Word has length 90 [2022-07-22 19:28:59,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:28:59,528 INFO L495 AbstractCegarLoop]: Abstraction has 3569 states and 6140 transitions. [2022-07-22 19:28:59,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:28:59,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3569 states and 6140 transitions. [2022-07-22 19:28:59,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:28:59,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:28:59,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:28:59,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:28:59,531 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:28:59,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:28:59,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1877597400, now seen corresponding path program 1 times [2022-07-22 19:28:59,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:28:59,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013869300] [2022-07-22 19:28:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:28:59,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:28:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:59,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:28:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:59,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:28:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:59,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:28:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:59,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:28:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:59,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:28:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:28:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:28:59,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:28:59,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013869300] [2022-07-22 19:28:59,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013869300] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:28:59,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:28:59,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:28:59,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791524064] [2022-07-22 19:28:59,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:28:59,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:28:59,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:28:59,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:28:59,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:28:59,614 INFO L87 Difference]: Start difference. First operand 3569 states and 6140 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:00,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:00,998 INFO L93 Difference]: Finished difference Result 7566 states and 12260 transitions. [2022-07-22 19:29:00,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:29:00,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-22 19:29:00,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:01,028 INFO L225 Difference]: With dead ends: 7566 [2022-07-22 19:29:01,028 INFO L226 Difference]: Without dead ends: 6130 [2022-07-22 19:29:01,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:29:01,036 INFO L413 NwaCegarLoop]: 4367 mSDtfsCounter, 4752 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 21039 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:01,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 21039 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 19:29:01,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2022-07-22 19:29:01,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 4821. [2022-07-22 19:29:01,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4821 states, 4483 states have (on average 1.677671202319875) internal successors, (7521), 4501 states have internal predecessors, (7521), 218 states have call successors, (218), 102 states have call predecessors, (218), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2022-07-22 19:29:01,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 8054 transitions. [2022-07-22 19:29:01,234 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 8054 transitions. Word has length 90 [2022-07-22 19:29:01,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:01,234 INFO L495 AbstractCegarLoop]: Abstraction has 4821 states and 8054 transitions. [2022-07-22 19:29:01,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 8054 transitions. [2022-07-22 19:29:01,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:29:01,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:01,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:01,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:29:01,238 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:01,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:01,239 INFO L85 PathProgramCache]: Analyzing trace with hash -508912106, now seen corresponding path program 1 times [2022-07-22 19:29:01,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:01,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65858353] [2022-07-22 19:29:01,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:01,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:01,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:01,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:29:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:01,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:29:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:01,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:29:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:01,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:29:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:01,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:01,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65858353] [2022-07-22 19:29:01,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65858353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:01,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:01,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:01,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898838348] [2022-07-22 19:29:01,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:01,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:01,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:01,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:01,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:01,317 INFO L87 Difference]: Start difference. First operand 4821 states and 8054 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:02,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:02,913 INFO L93 Difference]: Finished difference Result 12284 states and 19516 transitions. [2022-07-22 19:29:02,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:29:02,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-22 19:29:02,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:02,955 INFO L225 Difference]: With dead ends: 12284 [2022-07-22 19:29:02,955 INFO L226 Difference]: Without dead ends: 9596 [2022-07-22 19:29:02,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:29:02,969 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 4609 mSDsluCounter, 16669 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4619 SdHoareTripleChecker+Valid, 21090 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:02,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4619 Valid, 21090 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 19:29:02,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9596 states. [2022-07-22 19:29:03,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9596 to 7234. [2022-07-22 19:29:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7234 states, 6600 states have (on average 1.6234848484848485) internal successors, (10715), 6634 states have internal predecessors, (10715), 402 states have call successors, (402), 198 states have call predecessors, (402), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2022-07-22 19:29:03,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7234 states to 7234 states and 11794 transitions. [2022-07-22 19:29:03,339 INFO L78 Accepts]: Start accepts. Automaton has 7234 states and 11794 transitions. Word has length 90 [2022-07-22 19:29:03,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:03,339 INFO L495 AbstractCegarLoop]: Abstraction has 7234 states and 11794 transitions. [2022-07-22 19:29:03,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:03,340 INFO L276 IsEmpty]: Start isEmpty. Operand 7234 states and 11794 transitions. [2022-07-22 19:29:03,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:29:03,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:03,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:03,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 19:29:03,348 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:03,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:03,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1001538280, now seen corresponding path program 1 times [2022-07-22 19:29:03,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:03,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489016452] [2022-07-22 19:29:03,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:03,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:03,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:03,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:29:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:03,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:29:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:03,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:29:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:03,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:29:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:03,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:03,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489016452] [2022-07-22 19:29:03,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489016452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:03,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:03,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:03,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448245789] [2022-07-22 19:29:03,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:03,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:03,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:03,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:03,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:03,429 INFO L87 Difference]: Start difference. First operand 7234 states and 11794 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:04,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:04,920 INFO L93 Difference]: Finished difference Result 21183 states and 33370 transitions. [2022-07-22 19:29:04,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:29:04,921 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-22 19:29:04,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:04,979 INFO L225 Difference]: With dead ends: 21183 [2022-07-22 19:29:04,979 INFO L226 Difference]: Without dead ends: 16082 [2022-07-22 19:29:05,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:29:05,004 INFO L413 NwaCegarLoop]: 4357 mSDtfsCounter, 4672 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4688 SdHoareTripleChecker+Valid, 21029 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:05,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4688 Valid, 21029 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 19:29:05,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16082 states. [2022-07-22 19:29:05,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16082 to 12123. [2022-07-22 19:29:05,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12123 states, 10913 states have (on average 1.5802254192247778) internal successors, (17245), 10979 states have internal predecessors, (17245), 754 states have call successors, (754), 390 states have call predecessors, (754), 454 states have return successors, (1547), 817 states have call predecessors, (1547), 754 states have call successors, (1547) [2022-07-22 19:29:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12123 states to 12123 states and 19546 transitions. [2022-07-22 19:29:05,638 INFO L78 Accepts]: Start accepts. Automaton has 12123 states and 19546 transitions. Word has length 90 [2022-07-22 19:29:05,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:05,638 INFO L495 AbstractCegarLoop]: Abstraction has 12123 states and 19546 transitions. [2022-07-22 19:29:05,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:05,639 INFO L276 IsEmpty]: Start isEmpty. Operand 12123 states and 19546 transitions. [2022-07-22 19:29:05,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:29:05,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:05,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:05,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 19:29:05,650 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:05,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:05,651 INFO L85 PathProgramCache]: Analyzing trace with hash -47598122, now seen corresponding path program 1 times [2022-07-22 19:29:05,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:05,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381576469] [2022-07-22 19:29:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:05,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:05,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:05,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:29:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:05,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:29:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:05,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:29:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:05,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:29:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:05,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:05,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381576469] [2022-07-22 19:29:05,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381576469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:05,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:05,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:05,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803861609] [2022-07-22 19:29:05,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:05,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:05,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:05,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:05,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:05,733 INFO L87 Difference]: Start difference. First operand 12123 states and 19546 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:07,632 INFO L93 Difference]: Finished difference Result 38598 states and 61136 transitions. [2022-07-22 19:29:07,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:29:07,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-22 19:29:07,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:07,736 INFO L225 Difference]: With dead ends: 38598 [2022-07-22 19:29:07,737 INFO L226 Difference]: Without dead ends: 28608 [2022-07-22 19:29:07,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:29:07,783 INFO L413 NwaCegarLoop]: 4352 mSDtfsCounter, 4632 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 21024 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:07,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4648 Valid, 21024 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 19:29:07,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28608 states. [2022-07-22 19:29:08,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28608 to 21868. [2022-07-22 19:29:08,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21868 states, 19538 states have (on average 1.5526154161121917) internal successors, (30335), 19668 states have internal predecessors, (30335), 1426 states have call successors, (1426), 774 states have call predecessors, (1426), 902 states have return successors, (3741), 1553 states have call predecessors, (3741), 1426 states have call successors, (3741) [2022-07-22 19:29:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21868 states to 21868 states and 35502 transitions. [2022-07-22 19:29:09,040 INFO L78 Accepts]: Start accepts. Automaton has 21868 states and 35502 transitions. Word has length 90 [2022-07-22 19:29:09,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:09,040 INFO L495 AbstractCegarLoop]: Abstraction has 21868 states and 35502 transitions. [2022-07-22 19:29:09,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:09,041 INFO L276 IsEmpty]: Start isEmpty. Operand 21868 states and 35502 transitions. [2022-07-22 19:29:09,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:29:09,057 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:09,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:09,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 19:29:09,058 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:09,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:09,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1263751848, now seen corresponding path program 1 times [2022-07-22 19:29:09,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:09,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174707104] [2022-07-22 19:29:09,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:09,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:09,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:09,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:29:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:09,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:29:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:09,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:29:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:09,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:29:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:09,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:09,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174707104] [2022-07-22 19:29:09,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174707104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:09,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:09,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:09,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015988365] [2022-07-22 19:29:09,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:09,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:09,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:09,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:09,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:09,134 INFO L87 Difference]: Start difference. First operand 21868 states and 35502 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:12,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:12,234 INFO L93 Difference]: Finished difference Result 72173 states and 116654 transitions. [2022-07-22 19:29:12,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:29:12,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-22 19:29:12,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:12,458 INFO L225 Difference]: With dead ends: 72173 [2022-07-22 19:29:12,458 INFO L226 Difference]: Without dead ends: 52438 [2022-07-22 19:29:12,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:29:12,526 INFO L413 NwaCegarLoop]: 4353 mSDtfsCounter, 4577 mSDsluCounter, 16657 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4587 SdHoareTripleChecker+Valid, 21010 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:12,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4587 Valid, 21010 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 19:29:12,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52438 states. [2022-07-22 19:29:14,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52438 to 41269. [2022-07-22 19:29:14,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41269 states, 36779 states have (on average 1.5380787949645178) internal successors, (56569), 37037 states have internal predecessors, (56569), 2698 states have call successors, (2698), 1534 states have call predecessors, (2698), 1790 states have return successors, (9515), 2953 states have call predecessors, (9515), 2698 states have call successors, (9515) [2022-07-22 19:29:14,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41269 states to 41269 states and 68782 transitions. [2022-07-22 19:29:14,697 INFO L78 Accepts]: Start accepts. Automaton has 41269 states and 68782 transitions. Word has length 90 [2022-07-22 19:29:14,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:14,697 INFO L495 AbstractCegarLoop]: Abstraction has 41269 states and 68782 transitions. [2022-07-22 19:29:14,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:14,698 INFO L276 IsEmpty]: Start isEmpty. Operand 41269 states and 68782 transitions. [2022-07-22 19:29:14,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:29:14,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:14,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:14,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 19:29:14,728 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:14,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:14,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1995719274, now seen corresponding path program 1 times [2022-07-22 19:29:14,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:14,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843977085] [2022-07-22 19:29:14,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:14,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:14,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:14,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:29:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:14,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:29:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:14,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:29:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:14,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:29:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:14,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:14,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843977085] [2022-07-22 19:29:14,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843977085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:14,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:14,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:29:14,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209535351] [2022-07-22 19:29:14,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:14,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:29:14,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:14,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:29:14,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:29:14,817 INFO L87 Difference]: Start difference. First operand 41269 states and 68782 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:19,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:19,176 INFO L93 Difference]: Finished difference Result 113490 states and 185399 transitions. [2022-07-22 19:29:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:29:19,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2022-07-22 19:29:19,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:19,482 INFO L225 Difference]: With dead ends: 113490 [2022-07-22 19:29:19,484 INFO L226 Difference]: Without dead ends: 74355 [2022-07-22 19:29:19,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-22 19:29:19,636 INFO L413 NwaCegarLoop]: 4475 mSDtfsCounter, 4774 mSDsluCounter, 12412 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 16887 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:19,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4803 Valid, 16887 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 19:29:19,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74355 states. [2022-07-22 19:29:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74355 to 60660. [2022-07-22 19:29:22,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60660 states, 53846 states have (on average 1.5203729153511867) internal successors, (81866), 54361 states have internal predecessors, (81866), 4120 states have call successors, (4120), 2308 states have call predecessors, (4120), 2692 states have return successors, (13125), 4246 states have call predecessors, (13125), 4120 states have call successors, (13125) [2022-07-22 19:29:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60660 states to 60660 states and 99111 transitions. [2022-07-22 19:29:22,886 INFO L78 Accepts]: Start accepts. Automaton has 60660 states and 99111 transitions. Word has length 90 [2022-07-22 19:29:22,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:22,886 INFO L495 AbstractCegarLoop]: Abstraction has 60660 states and 99111 transitions. [2022-07-22 19:29:22,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 60660 states and 99111 transitions. [2022-07-22 19:29:23,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:29:23,372 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:23,372 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:23,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 19:29:23,373 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:23,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:23,373 INFO L85 PathProgramCache]: Analyzing trace with hash 499790298, now seen corresponding path program 1 times [2022-07-22 19:29:23,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:23,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125331644] [2022-07-22 19:29:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:23,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:23,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:23,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:29:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:23,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:29:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:29:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:23,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:29:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:23,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 19:29:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:23,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:29:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:23,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 19:29:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 19:29:23,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:23,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125331644] [2022-07-22 19:29:23,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125331644] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:29:23,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740645177] [2022-07-22 19:29:23,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:23,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:29:23,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:29:23,549 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:29:23,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 19:29:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:23,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:29:23,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:29:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 19:29:23,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:29:23,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740645177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:23,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:29:23,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 19:29:23,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963697164] [2022-07-22 19:29:23,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:23,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:29:23,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:23,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:29:23,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:29:23,764 INFO L87 Difference]: Start difference. First operand 60660 states and 99111 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) [2022-07-22 19:29:28,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:28,173 INFO L93 Difference]: Finished difference Result 176333 states and 288761 transitions. [2022-07-22 19:29:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:29:28,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 146 [2022-07-22 19:29:28,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:28,558 INFO L225 Difference]: With dead ends: 176333 [2022-07-22 19:29:28,558 INFO L226 Difference]: Without dead ends: 117807 [2022-07-22 19:29:28,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:29:28,692 INFO L413 NwaCegarLoop]: 4233 mSDtfsCounter, 4173 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 4470 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:28,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4173 Valid, 4470 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:29:28,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117807 states. [2022-07-22 19:29:33,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117807 to 117033. [2022-07-22 19:29:34,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117033 states, 103621 states have (on average 1.5118653554781367) internal successors, (156661), 104649 states have internal predecessors, (156661), 8034 states have call successors, (8034), 4608 states have call predecessors, (8034), 5376 states have return successors, (25789), 8031 states have call predecessors, (25789), 8034 states have call successors, (25789) [2022-07-22 19:29:34,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117033 states to 117033 states and 190484 transitions. [2022-07-22 19:29:34,437 INFO L78 Accepts]: Start accepts. Automaton has 117033 states and 190484 transitions. Word has length 146 [2022-07-22 19:29:34,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:34,438 INFO L495 AbstractCegarLoop]: Abstraction has 117033 states and 190484 transitions. [2022-07-22 19:29:34,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) [2022-07-22 19:29:34,438 INFO L276 IsEmpty]: Start isEmpty. Operand 117033 states and 190484 transitions. [2022-07-22 19:29:34,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:29:34,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:34,645 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:34,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 19:29:34,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 19:29:34,859 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:34,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:34,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1368264198, now seen corresponding path program 1 times [2022-07-22 19:29:34,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:34,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784519653] [2022-07-22 19:29:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:34,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:34,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:34,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:29:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:34,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:29:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:34,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:29:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:34,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:29:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:34,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 19:29:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:35,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:29:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:35,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 19:29:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 19:29:35,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:35,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784519653] [2022-07-22 19:29:35,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784519653] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:29:35,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085015008] [2022-07-22 19:29:35,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:35,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:29:35,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:29:35,198 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:29:35,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 19:29:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:35,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:29:35,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:29:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 19:29:35,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:29:35,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085015008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:35,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:29:35,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 19:29:35,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978561433] [2022-07-22 19:29:35,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:35,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:29:35,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:35,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:29:35,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:29:35,395 INFO L87 Difference]: Start difference. First operand 117033 states and 190484 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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)