./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d5746a53d1ab0f7d20d2e5362b7235e80167d7cee80ddadf160c57caf25829fe --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:27:12,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:27:12,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:27:12,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:27:12,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:27:12,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:27:12,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:27:12,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:27:12,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:27:12,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:27:12,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:27:12,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:27:12,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:27:12,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:27:12,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:27:12,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:27:12,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:27:12,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:27:12,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:27:12,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:27:12,625 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:27:12,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:27:12,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:27:12,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:27:12,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:27:12,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:27:12,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:27:12,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:27:12,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:27:12,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:27:12,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:27:12,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:27:12,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:27:12,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:27:12,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:27:12,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:27:12,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:27:12,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:27:12,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:27:12,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:27:12,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:27:12,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:27:12,645 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:27:12,670 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:27:12,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:27:12,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:27:12,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:27:12,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:27:12,672 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:27:12,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:27:12,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:27:12,673 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:27:12,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:27:12,674 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:27:12,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:27:12,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:27:12,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:27:12,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:27:12,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:27:12,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:27:12,675 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:27:12,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:27:12,675 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:27:12,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:27:12,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:27:12,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:27:12,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:27:12,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:27:12,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:27:12,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:27:12,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:27:12,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:27:12,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:27:12,678 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:27:12,678 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:27:12,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:27:12,679 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5746a53d1ab0f7d20d2e5362b7235e80167d7cee80ddadf160c57caf25829fe [2022-07-12 09:27:12,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:27:12,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:27:12,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:27:12,881 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:27:12,882 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:27:12,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-1.c [2022-07-12 09:27:12,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62fb0ac66/6177814120084d388d04afabb4e50f6d/FLAG4f6cab797 [2022-07-12 09:27:13,257 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:27:13,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-1.c [2022-07-12 09:27:13,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62fb0ac66/6177814120084d388d04afabb4e50f6d/FLAG4f6cab797 [2022-07-12 09:27:13,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62fb0ac66/6177814120084d388d04afabb4e50f6d [2022-07-12 09:27:13,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:27:13,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:27:13,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:27:13,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:27:13,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:27:13,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:27:13" (1/1) ... [2022-07-12 09:27:13,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f410101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:27:13, skipping insertion in model container [2022-07-12 09:27:13,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:27:13" (1/1) ... [2022-07-12 09:27:13,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:27:13,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:27:13,957 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-1.c[913,926] [2022-07-12 09:27:14,011 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-1.c[5977,5990] [2022-07-12 09:27:14,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:27:14,062 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:27:14,072 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-1.c[913,926] [2022-07-12 09:27:14,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-1.c[5977,5990] [2022-07-12 09:27:14,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:27:14,136 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:27:14,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:27:14 WrapperNode [2022-07-12 09:27:14,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:27:14,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:27:14,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:27:14,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:27:14,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:27:14" (1/1) ... [2022-07-12 09:27:14,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:27:14" (1/1) ... [2022-07-12 09:27:14,197 INFO L137 Inliner]: procedures = 54, calls = 58, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 538 [2022-07-12 09:27:14,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:27:14,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:27:14,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:27:14,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:27:14,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:27:14" (1/1) ... [2022-07-12 09:27:14,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:27:14" (1/1) ... [2022-07-12 09:27:14,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:27:14" (1/1) ... [2022-07-12 09:27:14,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:27:14" (1/1) ... [2022-07-12 09:27:14,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:27:14" (1/1) ... [2022-07-12 09:27:14,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:27:14" (1/1) ... [2022-07-12 09:27:14,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:27:14" (1/1) ... [2022-07-12 09:27:14,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:27:14,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:27:14,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:27:14,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:27:14,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:27:14" (1/1) ... [2022-07-12 09:27:14,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:27:14,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:27:14,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:27:14,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:27:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:27:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:27:14,323 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:27:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-07-12 09:27:14,324 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-07-12 09:27:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:27:14,324 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:27:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:27:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:27:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:27:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:27:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:27:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:27:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:27:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:27:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:27:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:27:14,326 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:27:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:27:14,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:27:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:27:14,326 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:27:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-12 09:27:14,326 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-12 09:27:14,437 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:27:14,439 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:27:14,760 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:27:14,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:27:14,767 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-12 09:27:14,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:27:14 BoogieIcfgContainer [2022-07-12 09:27:14,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:27:14,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:27:14,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:27:14,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:27:14,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:27:13" (1/3) ... [2022-07-12 09:27:14,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544a92b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:27:14, skipping insertion in model container [2022-07-12 09:27:14,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:27:14" (2/3) ... [2022-07-12 09:27:14,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544a92b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:27:14, skipping insertion in model container [2022-07-12 09:27:14,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:27:14" (3/3) ... [2022-07-12 09:27:14,802 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.03.cil-1.c [2022-07-12 09:27:14,824 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:27:14,827 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:27:14,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:27:14,923 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@555c1dc2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3562259f [2022-07-12 09:27:14,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:27:14,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 237 states, 199 states have (on average 1.592964824120603) internal successors, (317), 206 states have internal predecessors, (317), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-12 09:27:14,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-12 09:27:14,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:14,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:27:14,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:14,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:14,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1832472135, now seen corresponding path program 1 times [2022-07-12 09:27:14,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:14,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598675655] [2022-07-12 09:27:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:14,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:15,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:27:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:15,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 09:27:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:27:15,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:15,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598675655] [2022-07-12 09:27:15,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598675655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:15,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:27:15,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:27:15,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546306545] [2022-07-12 09:27:15,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:15,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:27:15,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:15,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:27:15,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:27:15,264 INFO L87 Difference]: Start difference. First operand has 237 states, 199 states have (on average 1.592964824120603) internal successors, (317), 206 states have internal predecessors, (317), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:27:15,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:15,439 INFO L93 Difference]: Finished difference Result 527 states and 820 transitions. [2022-07-12 09:27:15,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:27:15,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-12 09:27:15,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:15,449 INFO L225 Difference]: With dead ends: 527 [2022-07-12 09:27:15,449 INFO L226 Difference]: Without dead ends: 296 [2022-07-12 09:27:15,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:27:15,454 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 417 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:15,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 610 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:27:15,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-07-12 09:27:15,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 290. [2022-07-12 09:27:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 248 states have (on average 1.4596774193548387) internal successors, (362), 253 states have internal predecessors, (362), 29 states have call successors, (29), 12 states have call predecessors, (29), 11 states have return successors, (31), 25 states have call predecessors, (31), 25 states have call successors, (31) [2022-07-12 09:27:15,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 422 transitions. [2022-07-12 09:27:15,500 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 422 transitions. Word has length 44 [2022-07-12 09:27:15,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:15,500 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 422 transitions. [2022-07-12 09:27:15,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:27:15,500 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 422 transitions. [2022-07-12 09:27:15,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-12 09:27:15,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:15,503 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] [2022-07-12 09:27:15,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:27:15,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:15,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:15,504 INFO L85 PathProgramCache]: Analyzing trace with hash -882534523, now seen corresponding path program 1 times [2022-07-12 09:27:15,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:15,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246010541] [2022-07-12 09:27:15,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:15,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:15,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:27:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:15,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 09:27:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:27:15,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:15,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246010541] [2022-07-12 09:27:15,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246010541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:15,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:27:15,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:27:15,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624135705] [2022-07-12 09:27:15,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:15,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:27:15,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:15,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:27:15,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:27:15,581 INFO L87 Difference]: Start difference. First operand 290 states and 422 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:27:15,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:15,758 INFO L93 Difference]: Finished difference Result 538 states and 762 transitions. [2022-07-12 09:27:15,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:27:15,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-12 09:27:15,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:15,761 INFO L225 Difference]: With dead ends: 538 [2022-07-12 09:27:15,761 INFO L226 Difference]: Without dead ends: 414 [2022-07-12 09:27:15,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:27:15,763 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 189 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:15,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 760 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:27:15,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-07-12 09:27:15,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 357. [2022-07-12 09:27:15,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 309 states have (on average 1.4433656957928802) internal successors, (446), 314 states have internal predecessors, (446), 32 states have call successors, (32), 15 states have call predecessors, (32), 14 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2022-07-12 09:27:15,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 512 transitions. [2022-07-12 09:27:15,779 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 512 transitions. Word has length 45 [2022-07-12 09:27:15,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:15,780 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 512 transitions. [2022-07-12 09:27:15,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:27:15,780 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 512 transitions. [2022-07-12 09:27:15,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-12 09:27:15,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:15,781 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] [2022-07-12 09:27:15,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:27:15,782 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:15,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:15,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2128075312, now seen corresponding path program 1 times [2022-07-12 09:27:15,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:15,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341834382] [2022-07-12 09:27:15,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:15,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:15,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:27:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:15,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 09:27:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:15,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:27:15,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:15,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341834382] [2022-07-12 09:27:15,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341834382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:15,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:27:15,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:27:15,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755252119] [2022-07-12 09:27:15,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:15,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:27:15,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:15,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:27:15,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:27:15,830 INFO L87 Difference]: Start difference. First operand 357 states and 512 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:27:15,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:15,949 INFO L93 Difference]: Finished difference Result 765 states and 1071 transitions. [2022-07-12 09:27:15,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:27:15,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-12 09:27:15,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:15,952 INFO L225 Difference]: With dead ends: 765 [2022-07-12 09:27:15,952 INFO L226 Difference]: Without dead ends: 574 [2022-07-12 09:27:15,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:27:15,954 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 426 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:15,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 603 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:27:15,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-07-12 09:27:15,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 522. [2022-07-12 09:27:15,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 455 states have (on average 1.3978021978021977) internal successors, (636), 463 states have internal predecessors, (636), 43 states have call successors, (43), 22 states have call predecessors, (43), 22 states have return successors, (51), 37 states have call predecessors, (51), 39 states have call successors, (51) [2022-07-12 09:27:15,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 730 transitions. [2022-07-12 09:27:15,994 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 730 transitions. Word has length 45 [2022-07-12 09:27:15,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:15,994 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 730 transitions. [2022-07-12 09:27:15,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:27:15,995 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 730 transitions. [2022-07-12 09:27:15,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-12 09:27:15,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:15,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:27:15,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:27:15,998 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:15,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:15,998 INFO L85 PathProgramCache]: Analyzing trace with hash 888089079, now seen corresponding path program 1 times [2022-07-12 09:27:15,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:15,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092608482] [2022-07-12 09:27:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:15,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:16,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:27:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:16,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:27:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:16,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 09:27:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:27:16,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:16,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092608482] [2022-07-12 09:27:16,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092608482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:16,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:27:16,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:27:16,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761760538] [2022-07-12 09:27:16,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:16,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:27:16,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:16,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:27:16,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:27:16,042 INFO L87 Difference]: Start difference. First operand 522 states and 730 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 09:27:16,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:16,223 INFO L93 Difference]: Finished difference Result 1106 states and 1515 transitions. [2022-07-12 09:27:16,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:27:16,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-07-12 09:27:16,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:16,228 INFO L225 Difference]: With dead ends: 1106 [2022-07-12 09:27:16,229 INFO L226 Difference]: Without dead ends: 750 [2022-07-12 09:27:16,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:27:16,236 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 173 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:16,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 815 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:27:16,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-07-12 09:27:16,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 712. [2022-07-12 09:27:16,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 621 states have (on average 1.3462157809983897) internal successors, (836), 631 states have internal predecessors, (836), 57 states have call successors, (57), 30 states have call predecessors, (57), 32 states have return successors, (75), 51 states have call predecessors, (75), 53 states have call successors, (75) [2022-07-12 09:27:16,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 968 transitions. [2022-07-12 09:27:16,271 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 968 transitions. Word has length 62 [2022-07-12 09:27:16,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:16,273 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 968 transitions. [2022-07-12 09:27:16,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 09:27:16,273 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 968 transitions. [2022-07-12 09:27:16,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 09:27:16,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:16,277 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:27:16,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:27:16,279 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:16,280 INFO L85 PathProgramCache]: Analyzing trace with hash 306547218, now seen corresponding path program 1 times [2022-07-12 09:27:16,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:16,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261654297] [2022-07-12 09:27:16,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:16,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:16,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:27:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:16,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:27:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:16,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:27:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:16,359 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 09:27:16,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:16,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261654297] [2022-07-12 09:27:16,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261654297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:16,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:27:16,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:27:16,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819133340] [2022-07-12 09:27:16,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:16,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:27:16,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:16,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:27:16,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:27:16,363 INFO L87 Difference]: Start difference. First operand 712 states and 968 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 09:27:16,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:16,472 INFO L93 Difference]: Finished difference Result 1365 states and 1821 transitions. [2022-07-12 09:27:16,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:27:16,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-07-12 09:27:16,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:16,476 INFO L225 Difference]: With dead ends: 1365 [2022-07-12 09:27:16,476 INFO L226 Difference]: Without dead ends: 911 [2022-07-12 09:27:16,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:27:16,478 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 413 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:16,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 600 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:27:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2022-07-12 09:27:16,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 856. [2022-07-12 09:27:16,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 749 states have (on average 1.3177570093457944) internal successors, (987), 761 states have internal predecessors, (987), 65 states have call successors, (65), 36 states have call predecessors, (65), 40 states have return successors, (89), 59 states have call predecessors, (89), 61 states have call successors, (89) [2022-07-12 09:27:16,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1141 transitions. [2022-07-12 09:27:16,501 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1141 transitions. Word has length 67 [2022-07-12 09:27:16,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:16,501 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1141 transitions. [2022-07-12 09:27:16,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 09:27:16,501 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1141 transitions. [2022-07-12 09:27:16,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:27:16,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:16,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:27:16,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:27:16,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:16,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:16,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1645428910, now seen corresponding path program 1 times [2022-07-12 09:27:16,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:16,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000022260] [2022-07-12 09:27:16,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:16,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:16,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:27:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:16,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:16,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:27:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:27:16,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:16,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000022260] [2022-07-12 09:27:16,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000022260] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:27:16,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346861373] [2022-07-12 09:27:16,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:16,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:27:16,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:27:16,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:27:16,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:27:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:16,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 09:27:16,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:27:16,748 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:27:16,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:27:16,776 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 09:27:16,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346861373] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 09:27:16,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 09:27:16,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-07-12 09:27:16,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381656652] [2022-07-12 09:27:16,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:16,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:27:16,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:16,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:27:16,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:27:16,778 INFO L87 Difference]: Start difference. First operand 856 states and 1141 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 09:27:16,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:16,885 INFO L93 Difference]: Finished difference Result 912 states and 1209 transitions. [2022-07-12 09:27:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 09:27:16,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-07-12 09:27:16,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:16,888 INFO L225 Difference]: With dead ends: 912 [2022-07-12 09:27:16,889 INFO L226 Difference]: Without dead ends: 909 [2022-07-12 09:27:16,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:27:16,890 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 577 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:16,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 423 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:27:16,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-07-12 09:27:16,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 855. [2022-07-12 09:27:16,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 749 states have (on average 1.315086782376502) internal successors, (985), 760 states have internal predecessors, (985), 64 states have call successors, (64), 36 states have call predecessors, (64), 40 states have return successors, (89), 59 states have call predecessors, (89), 61 states have call successors, (89) [2022-07-12 09:27:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1138 transitions. [2022-07-12 09:27:16,917 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1138 transitions. Word has length 68 [2022-07-12 09:27:16,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:16,918 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1138 transitions. [2022-07-12 09:27:16,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 09:27:16,918 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1138 transitions. [2022-07-12 09:27:16,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 09:27:16,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:16,920 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:27:16,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 09:27:17,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-12 09:27:17,137 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:17,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:17,137 INFO L85 PathProgramCache]: Analyzing trace with hash 530550805, now seen corresponding path program 1 times [2022-07-12 09:27:17,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:17,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801490005] [2022-07-12 09:27:17,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:17,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:17,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:27:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:17,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:17,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:27:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:27:17,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:17,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801490005] [2022-07-12 09:27:17,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801490005] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:27:17,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310291839] [2022-07-12 09:27:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:17,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:27:17,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:27:17,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:27:17,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 09:27:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:17,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 09:27:17,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:27:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:27:17,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:27:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 09:27:17,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310291839] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:27:17,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:27:17,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-07-12 09:27:17,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070705962] [2022-07-12 09:27:17,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:27:17,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 09:27:17,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:17,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 09:27:17,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:27:17,470 INFO L87 Difference]: Start difference. First operand 855 states and 1138 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-12 09:27:18,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:18,340 INFO L93 Difference]: Finished difference Result 2555 states and 3358 transitions. [2022-07-12 09:27:18,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-12 09:27:18,340 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-07-12 09:27:18,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:18,346 INFO L225 Difference]: With dead ends: 2555 [2022-07-12 09:27:18,347 INFO L226 Difference]: Without dead ends: 2011 [2022-07-12 09:27:18,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-07-12 09:27:18,349 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 780 mSDsluCounter, 2034 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:18,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 2495 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:27:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2022-07-12 09:27:18,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1244. [2022-07-12 09:27:18,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1099 states have (on average 1.2911737943585078) internal successors, (1419), 1118 states have internal predecessors, (1419), 84 states have call successors, (84), 50 states have call predecessors, (84), 59 states have return successors, (123), 76 states have call predecessors, (123), 81 states have call successors, (123) [2022-07-12 09:27:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1626 transitions. [2022-07-12 09:27:18,408 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1626 transitions. Word has length 69 [2022-07-12 09:27:18,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:18,408 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 1626 transitions. [2022-07-12 09:27:18,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-12 09:27:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1626 transitions. [2022-07-12 09:27:18,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-12 09:27:18,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:18,411 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] [2022-07-12 09:27:18,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:27:18,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-07-12 09:27:18,616 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:18,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:18,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1086322536, now seen corresponding path program 1 times [2022-07-12 09:27:18,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:18,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703874278] [2022-07-12 09:27:18,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:18,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:18,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:27:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:18,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:27:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:18,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:18,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:27:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:18,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:27:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:18,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:27:18,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:18,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703874278] [2022-07-12 09:27:18,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703874278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:18,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:27:18,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:27:18,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069548970] [2022-07-12 09:27:18,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:18,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:27:18,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:18,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:27:18,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:27:18,735 INFO L87 Difference]: Start difference. First operand 1244 states and 1626 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:27:19,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:19,410 INFO L93 Difference]: Finished difference Result 1626 states and 2217 transitions. [2022-07-12 09:27:19,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:27:19,411 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-12 09:27:19,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:19,415 INFO L225 Difference]: With dead ends: 1626 [2022-07-12 09:27:19,415 INFO L226 Difference]: Without dead ends: 1478 [2022-07-12 09:27:19,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:27:19,431 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 679 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:19,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 934 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:27:19,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2022-07-12 09:27:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1391. [2022-07-12 09:27:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1227 states have (on average 1.317033414832926) internal successors, (1616), 1247 states have internal predecessors, (1616), 96 states have call successors, (96), 56 states have call predecessors, (96), 66 states have return successors, (138), 88 states have call predecessors, (138), 93 states have call successors, (138) [2022-07-12 09:27:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1850 transitions. [2022-07-12 09:27:19,482 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1850 transitions. Word has length 80 [2022-07-12 09:27:19,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:19,483 INFO L495 AbstractCegarLoop]: Abstraction has 1391 states and 1850 transitions. [2022-07-12 09:27:19,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:27:19,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1850 transitions. [2022-07-12 09:27:19,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-12 09:27:19,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:19,485 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] [2022-07-12 09:27:19,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:27:19,486 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:19,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:19,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1967204244, now seen corresponding path program 1 times [2022-07-12 09:27:19,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:19,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619244396] [2022-07-12 09:27:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:19,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:19,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:27:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:19,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:27:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:19,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:19,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:27:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:19,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:27:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:27:19,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:19,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619244396] [2022-07-12 09:27:19,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619244396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:19,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:27:19,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:27:19,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960603350] [2022-07-12 09:27:19,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:19,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:27:19,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:19,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:27:19,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:27:19,543 INFO L87 Difference]: Start difference. First operand 1391 states and 1850 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:27:20,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:20,351 INFO L93 Difference]: Finished difference Result 1964 states and 2730 transitions. [2022-07-12 09:27:20,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:27:20,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-12 09:27:20,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:20,358 INFO L225 Difference]: With dead ends: 1964 [2022-07-12 09:27:20,358 INFO L226 Difference]: Without dead ends: 1669 [2022-07-12 09:27:20,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:27:20,359 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 670 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:20,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1491 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:27:20,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2022-07-12 09:27:20,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1529. [2022-07-12 09:27:20,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1346 states have (on average 1.3335809806835066) internal successors, (1795), 1367 states have internal predecessors, (1795), 108 states have call successors, (108), 62 states have call predecessors, (108), 73 states have return successors, (152), 101 states have call predecessors, (152), 105 states have call successors, (152) [2022-07-12 09:27:20,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 2055 transitions. [2022-07-12 09:27:20,415 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 2055 transitions. Word has length 80 [2022-07-12 09:27:20,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:20,415 INFO L495 AbstractCegarLoop]: Abstraction has 1529 states and 2055 transitions. [2022-07-12 09:27:20,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:27:20,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 2055 transitions. [2022-07-12 09:27:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-12 09:27:20,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:20,418 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] [2022-07-12 09:27:20,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:27:20,418 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:20,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:20,418 INFO L85 PathProgramCache]: Analyzing trace with hash 281024406, now seen corresponding path program 1 times [2022-07-12 09:27:20,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:20,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772461729] [2022-07-12 09:27:20,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:20,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:20,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:27:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:20,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:27:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:20,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:27:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:27:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:27:20,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:20,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772461729] [2022-07-12 09:27:20,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772461729] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:20,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:27:20,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:27:20,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805886725] [2022-07-12 09:27:20,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:20,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:27:20,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:20,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:27:20,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:27:20,478 INFO L87 Difference]: Start difference. First operand 1529 states and 2055 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:27:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:21,259 INFO L93 Difference]: Finished difference Result 2461 states and 3483 transitions. [2022-07-12 09:27:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:27:21,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-12 09:27:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:21,267 INFO L225 Difference]: With dead ends: 2461 [2022-07-12 09:27:21,267 INFO L226 Difference]: Without dead ends: 2028 [2022-07-12 09:27:21,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:27:21,269 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 667 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:21,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 1483 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:27:21,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-07-12 09:27:21,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1806. [2022-07-12 09:27:21,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1585 states have (on average 1.3589905362776025) internal successors, (2154), 1608 states have internal predecessors, (2154), 132 states have call successors, (132), 74 states have call predecessors, (132), 87 states have return successors, (184), 127 states have call predecessors, (184), 129 states have call successors, (184) [2022-07-12 09:27:21,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2470 transitions. [2022-07-12 09:27:21,342 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2470 transitions. Word has length 80 [2022-07-12 09:27:21,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:21,342 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2470 transitions. [2022-07-12 09:27:21,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:27:21,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2470 transitions. [2022-07-12 09:27:21,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-12 09:27:21,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:21,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:27:21,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:27:21,345 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:21,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:21,346 INFO L85 PathProgramCache]: Analyzing trace with hash 226631508, now seen corresponding path program 1 times [2022-07-12 09:27:21,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:21,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831221894] [2022-07-12 09:27:21,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:21,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:21,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:27:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:21,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:27:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:21,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:21,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:27:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:21,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:27:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:27:21,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:21,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831221894] [2022-07-12 09:27:21,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831221894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:21,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:27:21,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:27:21,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402455705] [2022-07-12 09:27:21,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:21,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:27:21,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:21,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:27:21,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:27:21,412 INFO L87 Difference]: Start difference. First operand 1806 states and 2470 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:27:21,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:21,868 INFO L93 Difference]: Finished difference Result 2726 states and 3889 transitions. [2022-07-12 09:27:21,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:27:21,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-12 09:27:21,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:21,875 INFO L225 Difference]: With dead ends: 2726 [2022-07-12 09:27:21,876 INFO L226 Difference]: Without dead ends: 2016 [2022-07-12 09:27:21,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:27:21,878 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 540 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:21,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 919 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:27:21,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2022-07-12 09:27:21,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1806. [2022-07-12 09:27:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1585 states have (on average 1.3558359621451104) internal successors, (2149), 1608 states have internal predecessors, (2149), 132 states have call successors, (132), 74 states have call predecessors, (132), 87 states have return successors, (184), 127 states have call predecessors, (184), 129 states have call successors, (184) [2022-07-12 09:27:21,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2465 transitions. [2022-07-12 09:27:21,960 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2465 transitions. Word has length 80 [2022-07-12 09:27:21,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:21,961 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2465 transitions. [2022-07-12 09:27:21,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:27:21,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2465 transitions. [2022-07-12 09:27:21,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-12 09:27:21,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:21,963 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] [2022-07-12 09:27:21,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:27:21,963 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:21,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:21,965 INFO L85 PathProgramCache]: Analyzing trace with hash -190765098, now seen corresponding path program 1 times [2022-07-12 09:27:21,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:21,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997539242] [2022-07-12 09:27:21,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:21,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:21,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:27:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:21,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:27:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:22,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:22,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:27:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:22,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:27:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:27:22,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:22,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997539242] [2022-07-12 09:27:22,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997539242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:22,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:27:22,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:27:22,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111678016] [2022-07-12 09:27:22,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:22,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:27:22,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:22,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:27:22,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:27:22,019 INFO L87 Difference]: Start difference. First operand 1806 states and 2465 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:27:22,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:22,465 INFO L93 Difference]: Finished difference Result 2720 states and 3863 transitions. [2022-07-12 09:27:22,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:27:22,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-12 09:27:22,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:22,472 INFO L225 Difference]: With dead ends: 2720 [2022-07-12 09:27:22,472 INFO L226 Difference]: Without dead ends: 2010 [2022-07-12 09:27:22,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:27:22,474 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 552 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:22,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 903 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:27:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-07-12 09:27:22,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1806. [2022-07-12 09:27:22,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1585 states have (on average 1.3526813880126183) internal successors, (2144), 1608 states have internal predecessors, (2144), 132 states have call successors, (132), 74 states have call predecessors, (132), 87 states have return successors, (184), 127 states have call predecessors, (184), 129 states have call successors, (184) [2022-07-12 09:27:22,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2460 transitions. [2022-07-12 09:27:22,548 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2460 transitions. Word has length 80 [2022-07-12 09:27:22,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:22,549 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2460 transitions. [2022-07-12 09:27:22,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:27:22,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2460 transitions. [2022-07-12 09:27:22,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-12 09:27:22,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:22,551 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] [2022-07-12 09:27:22,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:27:22,552 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:22,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:22,552 INFO L85 PathProgramCache]: Analyzing trace with hash 488507156, now seen corresponding path program 1 times [2022-07-12 09:27:22,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:22,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713127103] [2022-07-12 09:27:22,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:22,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:22,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:27:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:22,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:27:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:22,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:22,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:27:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:22,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:27:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:22,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:27:22,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:22,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713127103] [2022-07-12 09:27:22,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713127103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:22,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:27:22,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:27:22,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499404233] [2022-07-12 09:27:22,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:22,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:27:22,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:22,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:27:22,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:27:22,618 INFO L87 Difference]: Start difference. First operand 1806 states and 2460 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:27:23,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:23,426 INFO L93 Difference]: Finished difference Result 3507 states and 5012 transitions. [2022-07-12 09:27:23,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:27:23,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-12 09:27:23,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:23,436 INFO L225 Difference]: With dead ends: 3507 [2022-07-12 09:27:23,436 INFO L226 Difference]: Without dead ends: 2797 [2022-07-12 09:27:23,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:27:23,439 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 706 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:23,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 1451 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:27:23,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2022-07-12 09:27:23,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2362. [2022-07-12 09:27:23,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2069 states have (on average 1.3852102464958918) internal successors, (2866), 2096 states have internal predecessors, (2866), 176 states have call successors, (176), 98 states have call predecessors, (176), 115 states have return successors, (250), 175 states have call predecessors, (250), 173 states have call successors, (250) [2022-07-12 09:27:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3292 transitions. [2022-07-12 09:27:23,595 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3292 transitions. Word has length 80 [2022-07-12 09:27:23,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:23,595 INFO L495 AbstractCegarLoop]: Abstraction has 2362 states and 3292 transitions. [2022-07-12 09:27:23,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:27:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3292 transitions. [2022-07-12 09:27:23,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-12 09:27:23,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:23,600 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] [2022-07-12 09:27:23,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:27:23,601 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:23,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:23,601 INFO L85 PathProgramCache]: Analyzing trace with hash 690331090, now seen corresponding path program 1 times [2022-07-12 09:27:23,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:23,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629060064] [2022-07-12 09:27:23,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:23,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:23,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:27:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:23,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:27:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:23,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:23,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:27:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:23,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:27:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:27:23,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:23,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629060064] [2022-07-12 09:27:23,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629060064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:23,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:27:23,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:27:23,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445937135] [2022-07-12 09:27:23,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:23,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:27:23,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:23,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:27:23,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:27:23,665 INFO L87 Difference]: Start difference. First operand 2362 states and 3292 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:27:24,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:24,523 INFO L93 Difference]: Finished difference Result 5385 states and 7826 transitions. [2022-07-12 09:27:24,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:27:24,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-12 09:27:24,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:24,536 INFO L225 Difference]: With dead ends: 5385 [2022-07-12 09:27:24,536 INFO L226 Difference]: Without dead ends: 4119 [2022-07-12 09:27:24,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:27:24,540 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 651 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:24,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1459 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:27:24,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2022-07-12 09:27:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 3463. [2022-07-12 09:27:24,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3463 states, 3030 states have (on average 1.4191419141914192) internal successors, (4300), 3065 states have internal predecessors, (4300), 260 states have call successors, (260), 146 states have call predecessors, (260), 171 states have return successors, (396), 267 states have call predecessors, (396), 257 states have call successors, (396) [2022-07-12 09:27:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 4956 transitions. [2022-07-12 09:27:24,702 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 4956 transitions. Word has length 80 [2022-07-12 09:27:24,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:24,702 INFO L495 AbstractCegarLoop]: Abstraction has 3463 states and 4956 transitions. [2022-07-12 09:27:24,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:27:24,703 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 4956 transitions. [2022-07-12 09:27:24,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-12 09:27:24,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:24,706 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] [2022-07-12 09:27:24,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:27:24,706 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:24,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:24,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1251030868, now seen corresponding path program 1 times [2022-07-12 09:27:24,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:24,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312506894] [2022-07-12 09:27:24,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:24,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:24,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:27:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:24,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:27:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:24,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:24,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:27:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:24,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:27:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:27:24,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:24,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312506894] [2022-07-12 09:27:24,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312506894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:24,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:27:24,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:27:24,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314732623] [2022-07-12 09:27:24,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:24,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:27:24,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:24,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:27:24,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:27:24,763 INFO L87 Difference]: Start difference. First operand 3463 states and 4956 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:27:25,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:25,597 INFO L93 Difference]: Finished difference Result 9041 states and 13314 transitions. [2022-07-12 09:27:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:27:25,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-12 09:27:25,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:25,644 INFO L225 Difference]: With dead ends: 9041 [2022-07-12 09:27:25,644 INFO L226 Difference]: Without dead ends: 6675 [2022-07-12 09:27:25,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-12 09:27:25,651 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 823 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:25,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1169 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:27:25,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6675 states. [2022-07-12 09:27:25,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6675 to 5654. [2022-07-12 09:27:25,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5654 states, 4914 states have (on average 1.426943426943427) internal successors, (7012), 4982 states have internal predecessors, (7012), 449 states have call successors, (449), 248 states have call predecessors, (449), 289 states have return successors, (667), 439 states have call predecessors, (667), 446 states have call successors, (667) [2022-07-12 09:27:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 8128 transitions. [2022-07-12 09:27:25,912 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 8128 transitions. Word has length 80 [2022-07-12 09:27:25,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:25,913 INFO L495 AbstractCegarLoop]: Abstraction has 5654 states and 8128 transitions. [2022-07-12 09:27:25,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:27:25,914 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 8128 transitions. [2022-07-12 09:27:25,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-12 09:27:25,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:25,919 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:27:25,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:27:25,920 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:25,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:25,920 INFO L85 PathProgramCache]: Analyzing trace with hash -2050145287, now seen corresponding path program 1 times [2022-07-12 09:27:25,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:25,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192088123] [2022-07-12 09:27:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:25,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:25,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:27:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:25,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:25,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 09:27:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:25,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 09:27:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-12 09:27:25,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:25,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192088123] [2022-07-12 09:27:25,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192088123] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:27:25,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228421268] [2022-07-12 09:27:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:25,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:27:25,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:27:25,971 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:27:25,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 09:27:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:26,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 09:27:26,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:27:26,066 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 09:27:26,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:27:26,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228421268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:26,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:27:26,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-12 09:27:26,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004608517] [2022-07-12 09:27:26,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:26,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:27:26,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:26,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:27:26,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:27:26,068 INFO L87 Difference]: Start difference. First operand 5654 states and 8128 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-12 09:27:26,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:26,276 INFO L93 Difference]: Finished difference Result 6377 states and 9066 transitions. [2022-07-12 09:27:26,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:27:26,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-07-12 09:27:26,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:26,296 INFO L225 Difference]: With dead ends: 6377 [2022-07-12 09:27:26,296 INFO L226 Difference]: Without dead ends: 5532 [2022-07-12 09:27:26,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:27:26,299 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 289 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:26,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 435 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:27:26,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5532 states. [2022-07-12 09:27:26,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5532 to 5517. [2022-07-12 09:27:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5517 states, 4793 states have (on average 1.430002086375965) internal successors, (6854), 4860 states have internal predecessors, (6854), 441 states have call successors, (441), 242 states have call predecessors, (441), 281 states have return successors, (653), 430 states have call predecessors, (653), 438 states have call successors, (653) [2022-07-12 09:27:26,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 7948 transitions. [2022-07-12 09:27:26,529 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 7948 transitions. Word has length 88 [2022-07-12 09:27:26,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:26,530 INFO L495 AbstractCegarLoop]: Abstraction has 5517 states and 7948 transitions. [2022-07-12 09:27:26,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-12 09:27:26,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 7948 transitions. [2022-07-12 09:27:26,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-12 09:27:26,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:26,535 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:27:26,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 09:27:26,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:27:26,752 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:26,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:26,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1393815741, now seen corresponding path program 1 times [2022-07-12 09:27:26,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:26,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385698651] [2022-07-12 09:27:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:26,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:26,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:27:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:26,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:26,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 09:27:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:26,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 09:27:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:26,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 09:27:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:26,802 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 09:27:26,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:26,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385698651] [2022-07-12 09:27:26,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385698651] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:27:26,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857190268] [2022-07-12 09:27:26,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:26,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:27:26,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:27:26,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:27:26,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 09:27:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:26,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:27:26,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:27:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:27:26,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:27:26,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857190268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:26,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:27:26,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-12 09:27:26,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975571120] [2022-07-12 09:27:26,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:26,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:27:26,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:26,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:27:26,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:27:26,980 INFO L87 Difference]: Start difference. First operand 5517 states and 7948 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-12 09:27:27,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:27,131 INFO L93 Difference]: Finished difference Result 5896 states and 8416 transitions. [2022-07-12 09:27:27,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:27:27,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-07-12 09:27:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:27,143 INFO L225 Difference]: With dead ends: 5896 [2022-07-12 09:27:27,143 INFO L226 Difference]: Without dead ends: 4570 [2022-07-12 09:27:27,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:27:27,147 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 62 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:27,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 678 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:27:27,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2022-07-12 09:27:27,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4570. [2022-07-12 09:27:27,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4570 states, 3949 states have (on average 1.467713345150671) internal successors, (5796), 4000 states have internal predecessors, (5796), 384 states have call successors, (384), 205 states have call predecessors, (384), 236 states have return successors, (561), 380 states have call predecessors, (561), 382 states have call successors, (561) [2022-07-12 09:27:27,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4570 states to 4570 states and 6741 transitions. [2022-07-12 09:27:27,365 INFO L78 Accepts]: Start accepts. Automaton has 4570 states and 6741 transitions. Word has length 103 [2022-07-12 09:27:27,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:27,365 INFO L495 AbstractCegarLoop]: Abstraction has 4570 states and 6741 transitions. [2022-07-12 09:27:27,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-12 09:27:27,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4570 states and 6741 transitions. [2022-07-12 09:27:27,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-12 09:27:27,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:27,372 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:27:27,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 09:27:27,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 09:27:27,579 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:27,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:27,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1875014099, now seen corresponding path program 1 times [2022-07-12 09:27:27,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:27,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785880130] [2022-07-12 09:27:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:27,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:27,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:27:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:27,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:27:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:27,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:27,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:27:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:27,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:27:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:27,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:27:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:27,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:27:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 09:27:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 09:27:27,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:27,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785880130] [2022-07-12 09:27:27,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785880130] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:27:27,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494458726] [2022-07-12 09:27:27,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:27,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:27:27,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:27:27,672 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:27:27,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 09:27:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:27,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:27:27,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:27:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 09:27:27,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:27:27,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494458726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:27,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:27:27,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 09:27:27,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568869895] [2022-07-12 09:27:27,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:27,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:27:27,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:27,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:27:27,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:27:27,789 INFO L87 Difference]: Start difference. First operand 4570 states and 6741 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:27:28,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:28,085 INFO L93 Difference]: Finished difference Result 13561 states and 20149 transitions. [2022-07-12 09:27:28,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:27:28,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2022-07-12 09:27:28,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:28,106 INFO L225 Difference]: With dead ends: 13561 [2022-07-12 09:27:28,106 INFO L226 Difference]: Without dead ends: 9004 [2022-07-12 09:27:28,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:27:28,119 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 189 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:28,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 453 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:27:28,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9004 states. [2022-07-12 09:27:28,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9004 to 8932. [2022-07-12 09:27:28,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8932 states, 7715 states have (on average 1.4650680492546986) internal successors, (11303), 7815 states have internal predecessors, (11303), 744 states have call successors, (744), 409 states have call predecessors, (744), 472 states have return successors, (1085), 723 states have call predecessors, (1085), 742 states have call successors, (1085) [2022-07-12 09:27:28,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8932 states to 8932 states and 13132 transitions. [2022-07-12 09:27:28,557 INFO L78 Accepts]: Start accepts. Automaton has 8932 states and 13132 transitions. Word has length 129 [2022-07-12 09:27:28,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:28,557 INFO L495 AbstractCegarLoop]: Abstraction has 8932 states and 13132 transitions. [2022-07-12 09:27:28,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:27:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 8932 states and 13132 transitions. [2022-07-12 09:27:28,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-12 09:27:28,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:28,569 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:27:28,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 09:27:28,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-12 09:27:28,786 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:28,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:28,786 INFO L85 PathProgramCache]: Analyzing trace with hash -505710771, now seen corresponding path program 1 times [2022-07-12 09:27:28,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:28,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731999610] [2022-07-12 09:27:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:28,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:28,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:27:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:28,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:27:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:28,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:27:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:28,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:27:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:28,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:27:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:28,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:27:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:28,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 09:27:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 09:27:28,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:28,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731999610] [2022-07-12 09:27:28,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731999610] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:27:28,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498203292] [2022-07-12 09:27:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:28,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:27:28,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:27:28,884 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:27:28,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 09:27:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:28,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:27:28,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:27:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 09:27:28,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:27:28,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498203292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:28,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:27:28,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 09:27:28,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733260068] [2022-07-12 09:27:28,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:28,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:27:28,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:28,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:27:28,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:27:28,998 INFO L87 Difference]: Start difference. First operand 8932 states and 13132 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 09:27:29,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:29,602 INFO L93 Difference]: Finished difference Result 26125 states and 38794 transitions. [2022-07-12 09:27:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:27:29,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 129 [2022-07-12 09:27:29,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:29,660 INFO L225 Difference]: With dead ends: 26125 [2022-07-12 09:27:29,661 INFO L226 Difference]: Without dead ends: 17207 [2022-07-12 09:27:29,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:27:29,734 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 192 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:29,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 666 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:27:29,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17207 states. [2022-07-12 09:27:30,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17207 to 17207. [2022-07-12 09:27:30,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17207 states, 14845 states have (on average 1.453553384978107) internal successors, (21578), 15010 states have internal predecessors, (21578), 1417 states have call successors, (1417), 817 states have call predecessors, (1417), 944 states have return successors, (2364), 1411 states have call predecessors, (2364), 1415 states have call successors, (2364) [2022-07-12 09:27:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17207 states to 17207 states and 25359 transitions. [2022-07-12 09:27:30,459 INFO L78 Accepts]: Start accepts. Automaton has 17207 states and 25359 transitions. Word has length 129 [2022-07-12 09:27:30,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:30,460 INFO L495 AbstractCegarLoop]: Abstraction has 17207 states and 25359 transitions. [2022-07-12 09:27:30,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 09:27:30,460 INFO L276 IsEmpty]: Start isEmpty. Operand 17207 states and 25359 transitions. [2022-07-12 09:27:30,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:27:30,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:30,495 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:27:30,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 09:27:30,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:27:30,712 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:30,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:30,713 INFO L85 PathProgramCache]: Analyzing trace with hash -55509300, now seen corresponding path program 1 times [2022-07-12 09:27:30,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:30,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332883357] [2022-07-12 09:27:30,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:30,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:30,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:27:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:30,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:27:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:30,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:30,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:27:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:30,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:27:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:30,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:27:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:30,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:27:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:30,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 09:27:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:30,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:27:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:30,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 09:27:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 09:27:30,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:30,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332883357] [2022-07-12 09:27:30,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332883357] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:27:30,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473627023] [2022-07-12 09:27:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:30,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:27:30,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:27:30,820 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:27:30,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 09:27:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:30,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:27:30,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:27:31,048 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 09:27:31,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:27:31,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473627023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:31,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:27:31,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 09:27:31,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282132588] [2022-07-12 09:27:31,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:31,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:27:31,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:27:31,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:27:31,055 INFO L87 Difference]: Start difference. First operand 17207 states and 25359 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 09:27:32,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:32,596 INFO L93 Difference]: Finished difference Result 50829 states and 75468 transitions. [2022-07-12 09:27:32,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:27:32,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 167 [2022-07-12 09:27:32,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:32,701 INFO L225 Difference]: With dead ends: 50829 [2022-07-12 09:27:32,702 INFO L226 Difference]: Without dead ends: 33641 [2022-07-12 09:27:32,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:27:32,747 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 137 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:32,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 453 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:27:32,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33641 states. [2022-07-12 09:27:34,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33641 to 33365. [2022-07-12 09:27:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33365 states, 28835 states have (on average 1.4526096757412865) internal successors, (41886), 29162 states have internal predecessors, (41886), 2665 states have call successors, (2665), 1609 states have call predecessors, (2665), 1864 states have return successors, (4438), 2625 states have call predecessors, (4438), 2663 states have call successors, (4438) [2022-07-12 09:27:34,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33365 states to 33365 states and 48989 transitions. [2022-07-12 09:27:34,296 INFO L78 Accepts]: Start accepts. Automaton has 33365 states and 48989 transitions. Word has length 167 [2022-07-12 09:27:34,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:34,296 INFO L495 AbstractCegarLoop]: Abstraction has 33365 states and 48989 transitions. [2022-07-12 09:27:34,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 09:27:34,297 INFO L276 IsEmpty]: Start isEmpty. Operand 33365 states and 48989 transitions. [2022-07-12 09:27:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:27:34,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:34,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:27:34,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 09:27:34,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:27:34,576 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:34,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:34,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1699287564, now seen corresponding path program 1 times [2022-07-12 09:27:34,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:34,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710928600] [2022-07-12 09:27:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:34,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:34,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:27:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:34,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:27:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:34,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:27:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:34,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:27:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:27:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:34,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:27:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:34,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 09:27:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:34,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:27:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:34,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 09:27:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 09:27:34,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:34,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710928600] [2022-07-12 09:27:34,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710928600] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:27:34,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824458917] [2022-07-12 09:27:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:34,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:27:34,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:27:34,672 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:27:34,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 09:27:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:34,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:27:34,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:27:34,879 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 09:27:34,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:27:34,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824458917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:34,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:27:34,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 09:27:34,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302242310] [2022-07-12 09:27:34,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:34,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:27:34,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:34,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:27:34,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:27:34,881 INFO L87 Difference]: Start difference. First operand 33365 states and 48989 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 09:27:37,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:37,797 INFO L93 Difference]: Finished difference Result 99001 states and 146492 transitions. [2022-07-12 09:27:37,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:27:37,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 167 [2022-07-12 09:27:37,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:38,053 INFO L225 Difference]: With dead ends: 99001 [2022-07-12 09:27:38,053 INFO L226 Difference]: Without dead ends: 65655 [2022-07-12 09:27:38,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:27:38,131 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 139 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:38,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 456 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:27:38,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65655 states. [2022-07-12 09:27:41,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65655 to 65107. [2022-07-12 09:27:41,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65107 states, 56253 states have (on average 1.4493804774856451) internal successors, (81532), 56904 states have internal predecessors, (81532), 5151 states have call successors, (5151), 3191 states have call predecessors, (5151), 3702 states have return successors, (8570), 5043 states have call predecessors, (8570), 5149 states have call successors, (8570) [2022-07-12 09:27:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65107 states to 65107 states and 95253 transitions. [2022-07-12 09:27:41,457 INFO L78 Accepts]: Start accepts. Automaton has 65107 states and 95253 transitions. Word has length 167 [2022-07-12 09:27:41,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:41,457 INFO L495 AbstractCegarLoop]: Abstraction has 65107 states and 95253 transitions. [2022-07-12 09:27:41,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 09:27:41,458 INFO L276 IsEmpty]: Start isEmpty. Operand 65107 states and 95253 transitions. [2022-07-12 09:27:41,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-12 09:27:41,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:41,574 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:27:41,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-12 09:27:41,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-07-12 09:27:41,787 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:41,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:41,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1486876546, now seen corresponding path program 1 times [2022-07-12 09:27:41,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:41,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001416433] [2022-07-12 09:27:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:41,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:41,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:27:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:41,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:27:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:41,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:41,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:27:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:41,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:27:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:41,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 09:27:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:41,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:27:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:41,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:27:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:41,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-12 09:27:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:41,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:27:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:41,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 09:27:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-12 09:27:41,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:41,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001416433] [2022-07-12 09:27:41,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001416433] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:27:41,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302992447] [2022-07-12 09:27:41,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:41,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:27:41,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:27:41,886 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:27:41,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 09:27:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:41,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:27:41,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:27:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-12 09:27:42,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:27:42,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302992447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:42,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:27:42,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 09:27:42,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870201360] [2022-07-12 09:27:42,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:42,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:27:42,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:42,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:27:42,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:27:42,063 INFO L87 Difference]: Start difference. First operand 65107 states and 95253 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 09:27:45,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:45,098 INFO L93 Difference]: Finished difference Result 107073 states and 157778 transitions. [2022-07-12 09:27:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:27:45,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 185 [2022-07-12 09:27:45,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:45,257 INFO L225 Difference]: With dead ends: 107073 [2022-07-12 09:27:45,258 INFO L226 Difference]: Without dead ends: 56675 [2022-07-12 09:27:45,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:27:45,336 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 184 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:45,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 278 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:27:45,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56675 states. [2022-07-12 09:27:47,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56675 to 40715. [2022-07-12 09:27:47,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40715 states, 35301 states have (on average 1.4018866321067391) internal successors, (49488), 35636 states have internal predecessors, (49488), 3099 states have call successors, (3099), 2059 states have call predecessors, (3099), 2314 states have return successors, (4506), 3035 states have call predecessors, (4506), 3097 states have call successors, (4506) [2022-07-12 09:27:47,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40715 states to 40715 states and 57093 transitions. [2022-07-12 09:27:47,537 INFO L78 Accepts]: Start accepts. Automaton has 40715 states and 57093 transitions. Word has length 185 [2022-07-12 09:27:47,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:47,538 INFO L495 AbstractCegarLoop]: Abstraction has 40715 states and 57093 transitions. [2022-07-12 09:27:47,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 09:27:47,538 INFO L276 IsEmpty]: Start isEmpty. Operand 40715 states and 57093 transitions. [2022-07-12 09:27:47,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-12 09:27:47,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:47,594 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:27:47,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 09:27:47,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:27:47,811 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:47,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:47,812 INFO L85 PathProgramCache]: Analyzing trace with hash 954673922, now seen corresponding path program 1 times [2022-07-12 09:27:47,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:47,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804351793] [2022-07-12 09:27:47,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:47,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:47,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:27:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:47,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:27:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:47,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:47,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:27:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:47,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:27:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:47,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 09:27:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:47,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:27:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:48,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:27:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:48,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-12 09:27:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:48,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:27:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:48,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 09:27:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:48,038 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-12 09:27:48,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:48,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804351793] [2022-07-12 09:27:48,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804351793] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:27:48,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725900057] [2022-07-12 09:27:48,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:48,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:27:48,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:27:48,056 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:27:48,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 09:27:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:48,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 09:27:48,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:27:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-12 09:27:48,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:27:48,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725900057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:48,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:27:48,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 09:27:48,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336969554] [2022-07-12 09:27:48,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:48,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:27:48,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:48,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:27:48,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:27:48,243 INFO L87 Difference]: Start difference. First operand 40715 states and 57093 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 09:27:50,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:50,739 INFO L93 Difference]: Finished difference Result 86161 states and 121933 transitions. [2022-07-12 09:27:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:27:50,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 185 [2022-07-12 09:27:50,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:50,870 INFO L225 Difference]: With dead ends: 86161 [2022-07-12 09:27:50,871 INFO L226 Difference]: Without dead ends: 45467 [2022-07-12 09:27:51,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:27:51,188 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 160 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:51,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 275 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:27:51,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45467 states. [2022-07-12 09:27:53,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45467 to 45337. [2022-07-12 09:27:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45337 states, 39575 states have (on average 1.369500947567909) internal successors, (54198), 39910 states have internal predecessors, (54198), 3197 states have call successors, (3197), 2309 states have call predecessors, (3197), 2564 states have return successors, (4827), 3133 states have call predecessors, (4827), 3195 states have call successors, (4827) [2022-07-12 09:27:53,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45337 states to 45337 states and 62222 transitions. [2022-07-12 09:27:53,966 INFO L78 Accepts]: Start accepts. Automaton has 45337 states and 62222 transitions. Word has length 185 [2022-07-12 09:27:53,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:27:53,966 INFO L495 AbstractCegarLoop]: Abstraction has 45337 states and 62222 transitions. [2022-07-12 09:27:53,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 09:27:53,967 INFO L276 IsEmpty]: Start isEmpty. Operand 45337 states and 62222 transitions. [2022-07-12 09:27:54,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-12 09:27:54,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:27:54,035 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:27:54,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 09:27:54,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-12 09:27:54,248 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:27:54,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:27:54,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1907458655, now seen corresponding path program 1 times [2022-07-12 09:27:54,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:27:54,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410856931] [2022-07-12 09:27:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:54,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:27:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:54,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:27:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:54,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:27:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:54,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:27:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:54,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:27:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:54,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:27:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 09:27:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:54,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:27:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:54,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:27:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:54,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-12 09:27:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:54,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:27:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:54,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 09:27:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:54,366 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-12 09:27:54,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:27:54,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410856931] [2022-07-12 09:27:54,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410856931] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:27:54,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133740518] [2022-07-12 09:27:54,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:27:54,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:27:54,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:27:54,382 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:27:54,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 09:27:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:27:54,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 09:27:54,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:27:54,534 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-12 09:27:54,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:27:54,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133740518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:27:54,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:27:54,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 09:27:54,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402719046] [2022-07-12 09:27:54,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:27:54,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:27:54,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:27:54,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:27:54,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:27:54,536 INFO L87 Difference]: Start difference. First operand 45337 states and 62222 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 09:27:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:27:57,380 INFO L93 Difference]: Finished difference Result 84062 states and 114980 transitions. [2022-07-12 09:27:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:27:57,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 185 [2022-07-12 09:27:57,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:27:57,568 INFO L225 Difference]: With dead ends: 84062 [2022-07-12 09:27:57,569 INFO L226 Difference]: Without dead ends: 49557 [2022-07-12 09:27:57,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:27:57,632 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 159 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:27:57,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 470 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:27:57,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49557 states. [2022-07-12 09:28:00,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49557 to 49319. [2022-07-12 09:28:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49319 states, 43290 states have (on average 1.3446292446292447) internal successors, (58209), 43625 states have internal predecessors, (58209), 3241 states have call successors, (3241), 2505 states have call predecessors, (3241), 2787 states have return successors, (5094), 3204 states have call predecessors, (5094), 3239 states have call successors, (5094) [2022-07-12 09:28:00,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49319 states to 49319 states and 66544 transitions. [2022-07-12 09:28:00,810 INFO L78 Accepts]: Start accepts. Automaton has 49319 states and 66544 transitions. Word has length 185 [2022-07-12 09:28:00,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:28:00,811 INFO L495 AbstractCegarLoop]: Abstraction has 49319 states and 66544 transitions. [2022-07-12 09:28:00,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 09:28:00,811 INFO L276 IsEmpty]: Start isEmpty. Operand 49319 states and 66544 transitions. [2022-07-12 09:28:00,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-12 09:28:00,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:28:00,877 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:28:00,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 09:28:01,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-12 09:28:01,095 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:28:01,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:28:01,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1939430005, now seen corresponding path program 1 times [2022-07-12 09:28:01,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:28:01,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854121800] [2022-07-12 09:28:01,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:28:01,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:28:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:28:01,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:28:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:28:01,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 09:28:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:28:01,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:28:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:28:01,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:28:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:28:01,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:28:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:28:01,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:28:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:28:01,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:28:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:28:01,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 09:28:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:28:01,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 09:28:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:28:01,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:28:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:28:01,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-12 09:28:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:28:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-12 09:28:01,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:28:01,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854121800] [2022-07-12 09:28:01,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854121800] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:28:01,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401626832] [2022-07-12 09:28:01,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:28:01,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:28:01,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:28:01,180 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:28:01,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 09:28:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:28:01,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:28:01,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:28:01,305 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 09:28:01,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:28:01,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401626832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:28:01,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:28:01,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 09:28:01,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141636646] [2022-07-12 09:28:01,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:28:01,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:28:01,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:28:01,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:28:01,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:28:01,308 INFO L87 Difference]: Start difference. First operand 49319 states and 66544 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 09:28:06,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:28:06,833 INFO L93 Difference]: Finished difference Result 146139 states and 199367 transitions. [2022-07-12 09:28:06,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:28:06,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 186 [2022-07-12 09:28:06,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:28:07,092 INFO L225 Difference]: With dead ends: 146139 [2022-07-12 09:28:07,093 INFO L226 Difference]: Without dead ends: 96841 [2022-07-12 09:28:07,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:28:07,185 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 190 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:28:07,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 665 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:28:07,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96841 states.