./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_label44+token_ring.12.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d3cf66723094c16b3ec081bddaed276332b3b239b1c88ec16db8fa6791967fb2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 19:22:31,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 19:22:31,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 19:22:31,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 19:22:31,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 19:22:31,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 19:22:31,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 19:22:31,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 19:22:31,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 19:22:31,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 19:22:31,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 19:22:31,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 19:22:31,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 19:22:31,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 19:22:31,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 19:22:31,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 19:22:31,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 19:22:31,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 19:22:31,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 19:22:31,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 19:22:31,598 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 19:22:31,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 19:22:31,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 19:22:31,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 19:22:31,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 19:22:31,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 19:22:31,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 19:22:31,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 19:22:31,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 19:22:31,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 19:22:31,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 19:22:31,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 19:22:31,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 19:22:31,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 19:22:31,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 19:22:31,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 19:22:31,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 19:22:31,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 19:22:31,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 19:22:31,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 19:22:31,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 19:22:31,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 19:22:31,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 19:22:31,635 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 19:22:31,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 19:22:31,636 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 19:22:31,636 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 19:22:31,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 19:22:31,636 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 19:22:31,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 19:22:31,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 19:22:31,637 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 19:22:31,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 19:22:31,638 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 19:22:31,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 19:22:31,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 19:22:31,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 19:22:31,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 19:22:31,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 19:22:31,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 19:22:31,639 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 19:22:31,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 19:22:31,639 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 19:22:31,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 19:22:31,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 19:22:31,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 19:22:31,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 19:22:31,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:22:31,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 19:22:31,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 19:22:31,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 19:22:31,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 19:22:31,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 19:22:31,641 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 19:22:31,641 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 19:22:31,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 19:22:31,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3cf66723094c16b3ec081bddaed276332b3b239b1c88ec16db8fa6791967fb2 [2022-07-19 19:22:31,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 19:22:31,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 19:22:31,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 19:22:31,853 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 19:22:31,853 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 19:22:31,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.12.cil-2.c [2022-07-19 19:22:31,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25e473a9/913a6e59c26b4c7d83ddd3a8cf9c26f1/FLAG8af865e3a [2022-07-19 19:22:32,641 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 19:22:32,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.12.cil-2.c [2022-07-19 19:22:32,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25e473a9/913a6e59c26b4c7d83ddd3a8cf9c26f1/FLAG8af865e3a [2022-07-19 19:22:33,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25e473a9/913a6e59c26b4c7d83ddd3a8cf9c26f1 [2022-07-19 19:22:33,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 19:22:33,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 19:22:33,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 19:22:33,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 19:22:33,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 19:22:33,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:22:33" (1/1) ... [2022-07-19 19:22:33,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aa5c1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:33, skipping insertion in model container [2022-07-19 19:22:33,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:22:33" (1/1) ... [2022-07-19 19:22:33,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 19:22:33,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 19:22:34,548 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_label44+token_ring.12.cil-2.c[377340,377353] [2022-07-19 19:22:34,570 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_label44+token_ring.12.cil-2.c[383339,383352] [2022-07-19 19:22:34,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:22:34,795 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 19:22:35,389 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_label44+token_ring.12.cil-2.c[377340,377353] [2022-07-19 19:22:35,396 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_label44+token_ring.12.cil-2.c[383339,383352] [2022-07-19 19:22:35,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:22:35,482 INFO L208 MainTranslator]: Completed translation [2022-07-19 19:22:35,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:35 WrapperNode [2022-07-19 19:22:35,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 19:22:35,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 19:22:35,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 19:22:35,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 19:22:35,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:35" (1/1) ... [2022-07-19 19:22:35,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:35" (1/1) ... [2022-07-19 19:22:35,789 INFO L137 Inliner]: procedures = 68, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13199 [2022-07-19 19:22:35,790 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 19:22:35,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 19:22:35,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 19:22:35,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 19:22:35,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:35" (1/1) ... [2022-07-19 19:22:35,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:35" (1/1) ... [2022-07-19 19:22:35,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:35" (1/1) ... [2022-07-19 19:22:35,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:35" (1/1) ... [2022-07-19 19:22:36,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:35" (1/1) ... [2022-07-19 19:22:36,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:35" (1/1) ... [2022-07-19 19:22:36,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:35" (1/1) ... [2022-07-19 19:22:36,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 19:22:36,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 19:22:36,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 19:22:36,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 19:22:36,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:35" (1/1) ... [2022-07-19 19:22:36,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:22:36,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:22:36,195 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) [2022-07-19 19:22:36,219 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 [2022-07-19 19:22:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 19:22:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-19 19:22:36,257 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-19 19:22:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 19:22:36,258 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 19:22:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-19 19:22:36,258 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-19 19:22:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-19 19:22:36,258 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-19 19:22:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-19 19:22:36,258 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-19 19:22:36,259 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-19 19:22:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-19 19:22:36,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 19:22:36,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 19:22:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 19:22:36,422 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 19:22:36,424 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 19:22:41,158 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 19:22:41,179 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 19:22:41,179 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-19 19:22:41,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:22:41 BoogieIcfgContainer [2022-07-19 19:22:41,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 19:22:41,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 19:22:41,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 19:22:41,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 19:22:41,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 07:22:33" (1/3) ... [2022-07-19 19:22:41,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b19e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:22:41, skipping insertion in model container [2022-07-19 19:22:41,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:35" (2/3) ... [2022-07-19 19:22:41,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b19e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:22:41, skipping insertion in model container [2022-07-19 19:22:41,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:22:41" (3/3) ... [2022-07-19 19:22:41,189 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.12.cil-2.c [2022-07-19 19:22:41,198 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 19:22:41,199 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 19:22:41,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 19:22:41,265 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@3a90118e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1da5a026 [2022-07-19 19:22:41,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 19:22:41,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-19 19:22:41,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:22:41,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:41,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:22:41,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:41,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:41,292 INFO L85 PathProgramCache]: Analyzing trace with hash 10619845, now seen corresponding path program 1 times [2022-07-19 19:22:41,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:41,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115613355] [2022-07-19 19:22:41,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:41,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:41,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:41,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:22:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:41,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:22:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:41,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:22:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:41,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:22:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:41,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:41,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:41,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115613355] [2022-07-19 19:22:41,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115613355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:41,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:41,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 19:22:41,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887288103] [2022-07-19 19:22:41,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:41,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 19:22:41,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:41,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 19:22:41,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 19:22:41,820 INFO L87 Difference]: Start difference. First operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2022-07-19 19:22:43,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:43,203 INFO L93 Difference]: Finished difference Result 5266 states and 9664 transitions. [2022-07-19 19:22:43,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 19:22:43,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 178 [2022-07-19 19:22:43,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:43,228 INFO L225 Difference]: With dead ends: 5266 [2022-07-19 19:22:43,229 INFO L226 Difference]: Without dead ends: 2640 [2022-07-19 19:22:43,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:22:43,243 INFO L413 NwaCegarLoop]: 4683 mSDtfsCounter, 1034 mSDsluCounter, 12465 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 17148 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:43,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 17148 Invalid, 783 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 19:22:43,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2022-07-19 19:22:43,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2022-07-19 19:22:43,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8262987012987013) internal successors, (4500), 2466 states have internal predecessors, (4500), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-19 19:22:43,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4552 transitions. [2022-07-19 19:22:43,370 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4552 transitions. Word has length 178 [2022-07-19 19:22:43,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:43,371 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 4552 transitions. [2022-07-19 19:22:43,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2022-07-19 19:22:43,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4552 transitions. [2022-07-19 19:22:43,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:22:43,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:43,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:22:43,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 19:22:43,381 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:43,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:43,381 INFO L85 PathProgramCache]: Analyzing trace with hash -79440445, now seen corresponding path program 1 times [2022-07-19 19:22:43,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:43,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023012440] [2022-07-19 19:22:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:43,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:43,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:43,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:22:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:43,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:22:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:43,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:22:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:22:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:43,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:43,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:43,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023012440] [2022-07-19 19:22:43,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023012440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:43,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:43,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 19:22:43,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247005302] [2022-07-19 19:22:43,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:43,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 19:22:43,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:43,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 19:22:43,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 19:22:43,601 INFO L87 Difference]: Start difference. First operand 2498 states and 4552 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2022-07-19 19:22:44,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:44,833 INFO L93 Difference]: Finished difference Result 3002 states and 5366 transitions. [2022-07-19 19:22:44,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 19:22:44,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 178 [2022-07-19 19:22:44,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:44,845 INFO L225 Difference]: With dead ends: 3002 [2022-07-19 19:22:44,845 INFO L226 Difference]: Without dead ends: 2640 [2022-07-19 19:22:44,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:22:44,849 INFO L413 NwaCegarLoop]: 4613 mSDtfsCounter, 1020 mSDsluCounter, 12262 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 16875 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:44,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 16875 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 19:22:44,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2022-07-19 19:22:44,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2022-07-19 19:22:44,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8258928571428572) internal successors, (4499), 2466 states have internal predecessors, (4499), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-19 19:22:44,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4551 transitions. [2022-07-19 19:22:44,906 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4551 transitions. Word has length 178 [2022-07-19 19:22:44,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:44,907 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 4551 transitions. [2022-07-19 19:22:44,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2022-07-19 19:22:44,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4551 transitions. [2022-07-19 19:22:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:22:44,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:44,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:22:44,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 19:22:44,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:44,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:44,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1483309631, now seen corresponding path program 1 times [2022-07-19 19:22:44,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:44,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793893555] [2022-07-19 19:22:44,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:44,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:44,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:44,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:22:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:45,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:22:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:45,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:22:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:45,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:22:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:45,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:45,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:45,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793893555] [2022-07-19 19:22:45,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793893555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:45,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:45,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 19:22:45,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000926024] [2022-07-19 19:22:45,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:45,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 19:22:45,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:45,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 19:22:45,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 19:22:45,063 INFO L87 Difference]: Start difference. First operand 2498 states and 4551 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2022-07-19 19:22:47,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:47,522 INFO L93 Difference]: Finished difference Result 3514 states and 6198 transitions. [2022-07-19 19:22:47,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 19:22:47,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 178 [2022-07-19 19:22:47,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:47,533 INFO L225 Difference]: With dead ends: 3514 [2022-07-19 19:22:47,534 INFO L226 Difference]: Without dead ends: 3157 [2022-07-19 19:22:47,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 19:22:47,536 INFO L413 NwaCegarLoop]: 4665 mSDtfsCounter, 5509 mSDsluCounter, 12816 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5528 SdHoareTripleChecker+Valid, 17481 SdHoareTripleChecker+Invalid, 2130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:47,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5528 Valid, 17481 Invalid, 2130 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 19:22:47,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2022-07-19 19:22:47,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2874. [2022-07-19 19:22:47,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7976529160739687) internal successors, (5055), 2815 states have internal predecessors, (5055), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-07-19 19:22:47,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5152 transitions. [2022-07-19 19:22:47,621 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5152 transitions. Word has length 178 [2022-07-19 19:22:47,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:47,622 INFO L495 AbstractCegarLoop]: Abstraction has 2874 states and 5152 transitions. [2022-07-19 19:22:47,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2022-07-19 19:22:47,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5152 transitions. [2022-07-19 19:22:47,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:22:47,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:47,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:22:47,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 19:22:47,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:47,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:47,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1935672389, now seen corresponding path program 1 times [2022-07-19 19:22:47,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:47,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271487758] [2022-07-19 19:22:47,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:47,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:47,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:47,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:22:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:47,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:22:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:47,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:22:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:47,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:22:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:47,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:47,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271487758] [2022-07-19 19:22:47,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271487758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:47,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:47,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:22:47,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422597662] [2022-07-19 19:22:47,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:47,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:22:47,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:47,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:22:47,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:22:47,767 INFO L87 Difference]: Start difference. First operand 2874 states and 5152 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:22:51,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:51,013 INFO L93 Difference]: Finished difference Result 4427 states and 7672 transitions. [2022-07-19 19:22:51,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:22:51,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2022-07-19 19:22:51,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:51,026 INFO L225 Difference]: With dead ends: 4427 [2022-07-19 19:22:51,026 INFO L226 Difference]: Without dead ends: 3694 [2022-07-19 19:22:51,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:22:51,031 INFO L413 NwaCegarLoop]: 4964 mSDtfsCounter, 5539 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3126 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5558 SdHoareTripleChecker+Valid, 22665 SdHoareTripleChecker+Invalid, 3202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:51,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5558 Valid, 22665 Invalid, 3202 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 3126 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 19:22:51,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2022-07-19 19:22:51,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3223. [2022-07-19 19:22:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3133 states have (on average 1.7736993297159271) internal successors, (5557), 3137 states have internal predecessors, (5557), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-07-19 19:22:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 5698 transitions. [2022-07-19 19:22:51,143 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 5698 transitions. Word has length 178 [2022-07-19 19:22:51,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:51,144 INFO L495 AbstractCegarLoop]: Abstraction has 3223 states and 5698 transitions. [2022-07-19 19:22:51,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:22:51,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 5698 transitions. [2022-07-19 19:22:51,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:22:51,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:51,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:22:51,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 19:22:51,149 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:51,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:51,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1324403331, now seen corresponding path program 1 times [2022-07-19 19:22:51,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:51,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966999632] [2022-07-19 19:22:51,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:51,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:51,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:51,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:22:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:51,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:22:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:51,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:22:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:51,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:22:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:51,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:51,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:51,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966999632] [2022-07-19 19:22:51,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966999632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:51,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:51,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:22:51,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273120779] [2022-07-19 19:22:51,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:51,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:22:51,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:51,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:22:51,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:22:51,294 INFO L87 Difference]: Start difference. First operand 3223 states and 5698 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:22:54,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:54,384 INFO L93 Difference]: Finished difference Result 5773 states and 9826 transitions. [2022-07-19 19:22:54,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:22:54,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2022-07-19 19:22:54,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:54,401 INFO L225 Difference]: With dead ends: 5773 [2022-07-19 19:22:54,402 INFO L226 Difference]: Without dead ends: 4691 [2022-07-19 19:22:54,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:22:54,408 INFO L413 NwaCegarLoop]: 4709 mSDtfsCounter, 5648 mSDsluCounter, 17063 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5667 SdHoareTripleChecker+Valid, 21772 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:54,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5667 Valid, 21772 Invalid, 2893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 2778 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 19:22:54,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2022-07-19 19:22:54,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 3922. [2022-07-19 19:22:54,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3776 states have (on average 1.7378177966101696) internal successors, (6562), 3782 states have internal predecessors, (6562), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-07-19 19:22:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 6795 transitions. [2022-07-19 19:22:54,577 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 6795 transitions. Word has length 178 [2022-07-19 19:22:54,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:54,578 INFO L495 AbstractCegarLoop]: Abstraction has 3922 states and 6795 transitions. [2022-07-19 19:22:54,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:22:54,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 6795 transitions. [2022-07-19 19:22:54,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:22:54,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:54,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:22:54,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 19:22:54,591 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:54,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:54,592 INFO L85 PathProgramCache]: Analyzing trace with hash -80788347, now seen corresponding path program 1 times [2022-07-19 19:22:54,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:54,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353965918] [2022-07-19 19:22:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:54,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:54,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:54,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:22:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:22:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:54,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:22:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:54,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:22:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:54,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:54,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353965918] [2022-07-19 19:22:54,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353965918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:54,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:54,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:22:54,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65171808] [2022-07-19 19:22:54,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:54,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:22:54,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:54,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:22:54,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:22:54,786 INFO L87 Difference]: Start difference. First operand 3922 states and 6795 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:22:57,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:57,847 INFO L93 Difference]: Finished difference Result 8360 states and 13939 transitions. [2022-07-19 19:22:57,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:22:57,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2022-07-19 19:22:57,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:57,877 INFO L225 Difference]: With dead ends: 8360 [2022-07-19 19:22:57,877 INFO L226 Difference]: Without dead ends: 6579 [2022-07-19 19:22:57,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:22:57,888 INFO L413 NwaCegarLoop]: 4952 mSDtfsCounter, 5534 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3125 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5553 SdHoareTripleChecker+Valid, 22653 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:57,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5553 Valid, 22653 Invalid, 3206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 3125 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 19:22:57,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6579 states. [2022-07-19 19:22:58,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6579 to 5321. [2022-07-19 19:22:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5321 states, 5063 states have (on average 1.693067351372704) internal successors, (8572), 5073 states have internal predecessors, (8572), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-07-19 19:22:58,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5321 states to 5321 states and 8995 transitions. [2022-07-19 19:22:58,115 INFO L78 Accepts]: Start accepts. Automaton has 5321 states and 8995 transitions. Word has length 178 [2022-07-19 19:22:58,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:58,116 INFO L495 AbstractCegarLoop]: Abstraction has 5321 states and 8995 transitions. [2022-07-19 19:22:58,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:22:58,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5321 states and 8995 transitions. [2022-07-19 19:22:58,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:22:58,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:58,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:22:58,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 19:22:58,119 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:58,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:58,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1813545539, now seen corresponding path program 1 times [2022-07-19 19:22:58,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:58,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283645206] [2022-07-19 19:22:58,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:58,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:58,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:58,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:22:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:58,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:22:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:58,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:22:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:58,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:22:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:58,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:58,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283645206] [2022-07-19 19:22:58,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283645206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:58,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:58,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:22:58,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214173266] [2022-07-19 19:22:58,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:58,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:22:58,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:58,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:22:58,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:22:58,244 INFO L87 Difference]: Start difference. First operand 5321 states and 8995 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:23:01,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:23:01,435 INFO L93 Difference]: Finished difference Result 13526 states and 22169 transitions. [2022-07-19 19:23:01,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:23:01,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2022-07-19 19:23:01,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:23:01,468 INFO L225 Difference]: With dead ends: 13526 [2022-07-19 19:23:01,468 INFO L226 Difference]: Without dead ends: 10346 [2022-07-19 19:23:01,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:23:01,483 INFO L413 NwaCegarLoop]: 4944 mSDtfsCounter, 5529 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3105 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5548 SdHoareTripleChecker+Valid, 22645 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:23:01,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5548 Valid, 22645 Invalid, 3187 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3105 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 19:23:01,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10346 states. [2022-07-19 19:23:01,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10346 to 8133. [2022-07-19 19:23:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8133 states, 7651 states have (on average 1.6489347797673506) internal successors, (12616), 7669 states have internal predecessors, (12616), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-07-19 19:23:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8133 states to 8133 states and 13437 transitions. [2022-07-19 19:23:01,975 INFO L78 Accepts]: Start accepts. Automaton has 8133 states and 13437 transitions. Word has length 178 [2022-07-19 19:23:01,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:23:01,975 INFO L495 AbstractCegarLoop]: Abstraction has 8133 states and 13437 transitions. [2022-07-19 19:23:01,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:23:01,976 INFO L276 IsEmpty]: Start isEmpty. Operand 8133 states and 13437 transitions. [2022-07-19 19:23:01,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:23:01,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:23:01,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:23:01,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 19:23:01,982 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:23:01,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:23:01,983 INFO L85 PathProgramCache]: Analyzing trace with hash 890378113, now seen corresponding path program 1 times [2022-07-19 19:23:01,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:23:01,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721165014] [2022-07-19 19:23:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:23:01,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:23:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:23:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:02,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:23:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:02,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:23:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:23:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:02,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:23:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:23:02,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:23:02,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721165014] [2022-07-19 19:23:02,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721165014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:23:02,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:23:02,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:23:02,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438364568] [2022-07-19 19:23:02,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:23:02,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:23:02,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:23:02,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:23:02,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:23:02,098 INFO L87 Difference]: Start difference. First operand 8133 states and 13437 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:23:05,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:23:05,893 INFO L93 Difference]: Finished difference Result 23876 states and 38721 transitions. [2022-07-19 19:23:05,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:23:05,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2022-07-19 19:23:05,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:23:05,946 INFO L225 Difference]: With dead ends: 23876 [2022-07-19 19:23:05,946 INFO L226 Difference]: Without dead ends: 17884 [2022-07-19 19:23:05,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:23:05,967 INFO L413 NwaCegarLoop]: 4939 mSDtfsCounter, 5528 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3097 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5547 SdHoareTripleChecker+Valid, 22640 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 19:23:05,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5547 Valid, 22640 Invalid, 3179 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3097 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 19:23:05,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17884 states. [2022-07-19 19:23:06,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17884 to 13770. [2022-07-19 19:23:06,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13770 states, 12840 states have (on average 1.6138629283489097) internal successors, (20722), 12874 states have internal predecessors, (20722), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-07-19 19:23:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13770 states to 13770 states and 22393 transitions. [2022-07-19 19:23:06,835 INFO L78 Accepts]: Start accepts. Automaton has 13770 states and 22393 transitions. Word has length 178 [2022-07-19 19:23:06,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:23:06,835 INFO L495 AbstractCegarLoop]: Abstraction has 13770 states and 22393 transitions. [2022-07-19 19:23:06,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:23:06,836 INFO L276 IsEmpty]: Start isEmpty. Operand 13770 states and 22393 transitions. [2022-07-19 19:23:06,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:23:06,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:23:06,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:23:06,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 19:23:06,843 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:23:06,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:23:06,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1276240515, now seen corresponding path program 1 times [2022-07-19 19:23:06,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:23:06,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295886655] [2022-07-19 19:23:06,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:23:06,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:23:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:06,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:23:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:06,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:23:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:06,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:23:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:06,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:23:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:23:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:23:06,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:23:06,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295886655] [2022-07-19 19:23:06,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295886655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:23:06,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:23:06,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:23:06,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138461162] [2022-07-19 19:23:06,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:23:06,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:23:06,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:23:06,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:23:06,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:23:06,958 INFO L87 Difference]: Start difference. First operand 13770 states and 22393 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:23:09,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:23:09,530 INFO L93 Difference]: Finished difference Result 29766 states and 48386 transitions. [2022-07-19 19:23:09,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 19:23:09,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2022-07-19 19:23:09,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:23:09,581 INFO L225 Difference]: With dead ends: 29766 [2022-07-19 19:23:09,582 INFO L226 Difference]: Without dead ends: 18137 [2022-07-19 19:23:09,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 19:23:09,612 INFO L413 NwaCegarLoop]: 4589 mSDtfsCounter, 5079 mSDsluCounter, 16760 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5099 SdHoareTripleChecker+Valid, 21349 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:23:09,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5099 Valid, 21349 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 19:23:09,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18137 states. [2022-07-19 19:23:10,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18137 to 13770. [2022-07-19 19:23:10,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13770 states, 12840 states have (on average 1.6112928348909656) internal successors, (20689), 12874 states have internal predecessors, (20689), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-07-19 19:23:10,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13770 states to 13770 states and 22360 transitions. [2022-07-19 19:23:10,443 INFO L78 Accepts]: Start accepts. Automaton has 13770 states and 22360 transitions. Word has length 178 [2022-07-19 19:23:10,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:23:10,444 INFO L495 AbstractCegarLoop]: Abstraction has 13770 states and 22360 transitions. [2022-07-19 19:23:10,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:23:10,444 INFO L276 IsEmpty]: Start isEmpty. Operand 13770 states and 22360 transitions. [2022-07-19 19:23:10,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:23:10,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:23:10,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:23:10,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 19:23:10,458 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:23:10,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:23:10,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1011593025, now seen corresponding path program 1 times [2022-07-19 19:23:10,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:23:10,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332163972] [2022-07-19 19:23:10,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:23:10,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:23:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:10,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:23:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:10,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:23:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:10,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:23:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:10,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:23:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:10,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:23:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:23:10,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:23:10,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332163972] [2022-07-19 19:23:10,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332163972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:23:10,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:23:10,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:23:10,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967569688] [2022-07-19 19:23:10,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:23:10,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:23:10,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:23:10,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:23:10,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:23:10,607 INFO L87 Difference]: Start difference. First operand 13770 states and 22360 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:23:15,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:23:15,782 INFO L93 Difference]: Finished difference Result 44541 states and 71783 transitions. [2022-07-19 19:23:15,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:23:15,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2022-07-19 19:23:15,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:23:15,868 INFO L225 Difference]: With dead ends: 44541 [2022-07-19 19:23:15,869 INFO L226 Difference]: Without dead ends: 32912 [2022-07-19 19:23:15,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:23:15,891 INFO L413 NwaCegarLoop]: 4928 mSDtfsCounter, 5520 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3070 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5539 SdHoareTripleChecker+Valid, 22629 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 19:23:15,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5539 Valid, 22629 Invalid, 3152 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3070 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 19:23:15,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32912 states. [2022-07-19 19:23:17,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32912 to 25108. [2022-07-19 19:23:17,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25108 states, 23282 states have (on average 1.587020015462589) internal successors, (36949), 23348 states have internal predecessors, (36949), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2022-07-19 19:23:17,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25108 states to 25108 states and 40482 transitions. [2022-07-19 19:23:17,719 INFO L78 Accepts]: Start accepts. Automaton has 25108 states and 40482 transitions. Word has length 178 [2022-07-19 19:23:17,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:23:17,720 INFO L495 AbstractCegarLoop]: Abstraction has 25108 states and 40482 transitions. [2022-07-19 19:23:17,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:23:17,720 INFO L276 IsEmpty]: Start isEmpty. Operand 25108 states and 40482 transitions. [2022-07-19 19:23:17,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:23:17,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:23:17,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:23:17,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 19:23:17,733 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:23:17,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:23:17,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1352248637, now seen corresponding path program 1 times [2022-07-19 19:23:17,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:23:17,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609868389] [2022-07-19 19:23:17,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:23:17,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:23:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:23:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:17,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:23:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:17,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:23:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:17,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:23:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:17,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:23:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:23:17,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:23:17,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609868389] [2022-07-19 19:23:17,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609868389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:23:17,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:23:17,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:23:17,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345874374] [2022-07-19 19:23:17,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:23:17,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:23:17,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:23:17,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:23:17,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:23:17,866 INFO L87 Difference]: Start difference. First operand 25108 states and 40482 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:23:25,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:23:25,506 INFO L93 Difference]: Finished difference Result 85941 states and 138783 transitions. [2022-07-19 19:23:25,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:23:25,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2022-07-19 19:23:25,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:23:25,703 INFO L225 Difference]: With dead ends: 85941 [2022-07-19 19:23:25,704 INFO L226 Difference]: Without dead ends: 62974 [2022-07-19 19:23:25,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:23:25,912 INFO L413 NwaCegarLoop]: 4923 mSDtfsCounter, 5519 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3062 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5538 SdHoareTripleChecker+Valid, 22624 SdHoareTripleChecker+Invalid, 3144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:23:25,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5538 Valid, 22624 Invalid, 3144 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3062 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 19:23:25,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62974 states. [2022-07-19 19:23:29,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62974 to 47845. [2022-07-19 19:23:29,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47845 states, 44227 states have (on average 1.5727722884211002) internal successors, (69559), 44357 states have internal predecessors, (69559), 2714 states have call successors, (2714), 774 states have call predecessors, (2714), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2022-07-19 19:23:29,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47845 states to 47845 states and 77302 transitions. [2022-07-19 19:23:29,623 INFO L78 Accepts]: Start accepts. Automaton has 47845 states and 77302 transitions. Word has length 178 [2022-07-19 19:23:29,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:23:29,623 INFO L495 AbstractCegarLoop]: Abstraction has 47845 states and 77302 transitions. [2022-07-19 19:23:29,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:23:29,624 INFO L276 IsEmpty]: Start isEmpty. Operand 47845 states and 77302 transitions. [2022-07-19 19:23:29,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:23:29,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:23:29,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:23:29,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 19:23:29,644 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:23:29,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:23:29,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1619539713, now seen corresponding path program 1 times [2022-07-19 19:23:29,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:23:29,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863739318] [2022-07-19 19:23:29,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:23:29,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:23:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:29,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:23:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:29,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:23:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:29,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:23:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:29,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:23:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:29,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:23:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:23:29,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:23:29,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863739318] [2022-07-19 19:23:29,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863739318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:23:29,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:23:29,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:23:29,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564306017] [2022-07-19 19:23:29,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:23:29,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:23:29,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:23:29,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:23:29,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:23:29,759 INFO L87 Difference]: Start difference. First operand 47845 states and 77302 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:23:43,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:23:43,337 INFO L93 Difference]: Finished difference Result 168740 states and 274629 transitions. [2022-07-19 19:23:43,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:23:43,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2022-07-19 19:23:43,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:23:43,778 INFO L225 Difference]: With dead ends: 168740 [2022-07-19 19:23:43,778 INFO L226 Difference]: Without dead ends: 123036 [2022-07-19 19:23:43,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:23:43,909 INFO L413 NwaCegarLoop]: 4683 mSDtfsCounter, 5618 mSDsluCounter, 17063 mSDsCounter, 0 mSdLazyCounter, 2728 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5637 SdHoareTripleChecker+Valid, 21746 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:23:43,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5637 Valid, 21746 Invalid, 2846 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 2728 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 19:23:43,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123036 states. [2022-07-19 19:23:51,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123036 to 93446. [2022-07-19 19:23:51,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93446 states, 86244 states have (on average 1.5649668382728075) internal successors, (134969), 86502 states have internal predecessors, (134969), 5402 states have call successors, (5402), 1542 states have call predecessors, (5402), 1798 states have return successors, (12219), 5657 states have call predecessors, (12219), 5402 states have call successors, (12219) [2022-07-19 19:23:52,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93446 states to 93446 states and 152590 transitions. [2022-07-19 19:23:52,011 INFO L78 Accepts]: Start accepts. Automaton has 93446 states and 152590 transitions. Word has length 178 [2022-07-19 19:23:52,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:23:52,012 INFO L495 AbstractCegarLoop]: Abstraction has 93446 states and 152590 transitions. [2022-07-19 19:23:52,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:23:52,012 INFO L276 IsEmpty]: Start isEmpty. Operand 93446 states and 152590 transitions. [2022-07-19 19:23:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:23:52,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:23:52,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:23:52,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 19:23:52,054 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:23:52,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:23:52,055 INFO L85 PathProgramCache]: Analyzing trace with hash -778448125, now seen corresponding path program 1 times [2022-07-19 19:23:52,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:23:52,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845895050] [2022-07-19 19:23:52,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:23:52,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:23:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:52,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:23:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:52,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:23:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:52,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:23:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:52,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:23:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:52,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:23:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:23:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:23:52,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:23:52,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845895050] [2022-07-19 19:23:52,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845895050] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:23:52,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:23:52,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:23:52,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222683134] [2022-07-19 19:23:52,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:23:52,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:23:52,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:23:52,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:23:52,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:23:52,162 INFO L87 Difference]: Start difference. First operand 93446 states and 152590 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:24:05,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:24:05,820 INFO L93 Difference]: Finished difference Result 216214 states and 359849 transitions. [2022-07-19 19:24:05,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 19:24:05,825 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2022-07-19 19:24:05,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:24:06,321 INFO L225 Difference]: With dead ends: 216214 [2022-07-19 19:24:06,321 INFO L226 Difference]: Without dead ends: 124909 [2022-07-19 19:24:06,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 19:24:06,543 INFO L413 NwaCegarLoop]: 4574 mSDtfsCounter, 5082 mSDsluCounter, 16760 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5102 SdHoareTripleChecker+Valid, 21334 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:24:06,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5102 Valid, 21334 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 19:24:06,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124909 states. [2022-07-19 19:24:14,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124909 to 93446. [2022-07-19 19:24:14,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93446 states, 86244 states have (on average 1.5619869208292751) internal successors, (134712), 86502 states have internal predecessors, (134712), 5402 states have call successors, (5402), 1542 states have call predecessors, (5402), 1798 states have return successors, (12219), 5657 states have call predecessors, (12219), 5402 states have call successors, (12219) [2022-07-19 19:24:15,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93446 states to 93446 states and 152333 transitions. [2022-07-19 19:24:15,398 INFO L78 Accepts]: Start accepts. Automaton has 93446 states and 152333 transitions. Word has length 178 [2022-07-19 19:24:15,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:24:15,398 INFO L495 AbstractCegarLoop]: Abstraction has 93446 states and 152333 transitions. [2022-07-19 19:24:15,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2022-07-19 19:24:15,398 INFO L276 IsEmpty]: Start isEmpty. Operand 93446 states and 152333 transitions. [2022-07-19 19:24:15,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:24:15,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:24:15,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:24:15,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 19:24:15,433 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:24:15,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:24:15,433 INFO L85 PathProgramCache]: Analyzing trace with hash -440160575, now seen corresponding path program 1 times [2022-07-19 19:24:15,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:24:15,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40120738] [2022-07-19 19:24:15,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:24:15,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:24:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:15,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:24:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:15,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:24:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:15,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:24:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:15,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:24:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:15,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:24:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:24:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:24:15,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:24:15,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40120738] [2022-07-19 19:24:15,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40120738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:24:15,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:24:15,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:24:15,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887627339] [2022-07-19 19:24:15,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:24:15,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:24:15,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:24:15,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:24:15,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:24:15,545 INFO L87 Difference]: Start difference. First operand 93446 states and 152333 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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)