./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/systemc/token_ring.08.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 19daebdfafed51668fa57cd9e9dbb1892c2070de71da48d425d8df389215d260 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:15:29,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:15:29,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:15:29,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:15:29,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:15:29,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:15:29,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:15:29,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:15:29,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:15:29,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:15:29,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:15:29,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:15:29,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:15:29,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:15:29,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:15:29,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:15:29,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:15:29,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:15:29,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:15:29,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:15:29,765 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:15:29,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:15:29,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:15:29,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:15:29,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:15:29,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:15:29,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:15:29,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:15:29,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:15:29,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:15:29,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:15:29,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:15:29,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:15:29,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:15:29,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:15:29,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:15:29,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:15:29,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:15:29,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:15:29,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:15:29,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:15:29,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:15:29,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:15:29,826 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:15:29,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:15:29,828 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:15:29,828 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:15:29,829 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:15:29,829 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:15:29,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:15:29,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:15:29,830 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:15:29,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:15:29,831 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:15:29,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:15:29,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:15:29,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:15:29,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:15:29,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:15:29,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:15:29,832 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:15:29,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:15:29,832 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:15:29,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:15:29,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:15:29,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:15:29,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:15:29,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:15:29,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:15:29,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:15:29,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:15:29,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:15:29,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:15:29,833 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:15:29,833 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:15:29,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:15:29,833 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19daebdfafed51668fa57cd9e9dbb1892c2070de71da48d425d8df389215d260 [2022-07-21 05:15:30,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:15:30,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:15:30,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:15:30,106 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:15:30,106 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:15:30,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.08.cil-2.c [2022-07-21 05:15:30,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ccce493/b3130d71778f487e8dadb0355b7489d8/FLAG27170ca45 [2022-07-21 05:15:30,553 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:15:30,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.08.cil-2.c [2022-07-21 05:15:30,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ccce493/b3130d71778f487e8dadb0355b7489d8/FLAG27170ca45 [2022-07-21 05:15:30,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ccce493/b3130d71778f487e8dadb0355b7489d8 [2022-07-21 05:15:30,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:15:30,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:15:30,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:15:30,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:15:30,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:15:30,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:15:30" (1/1) ... [2022-07-21 05:15:30,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e12aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:30, skipping insertion in model container [2022-07-21 05:15:30,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:15:30" (1/1) ... [2022-07-21 05:15:30,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:15:30,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:15:30,759 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/systemc/token_ring.08.cil-2.c[671,684] [2022-07-21 05:15:30,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:15:30,904 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:15:30,914 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/systemc/token_ring.08.cil-2.c[671,684] [2022-07-21 05:15:30,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:15:30,983 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:15:30,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:30 WrapperNode [2022-07-21 05:15:30,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:15:30,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:15:30,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:15:30,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:15:30,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:30" (1/1) ... [2022-07-21 05:15:31,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:30" (1/1) ... [2022-07-21 05:15:31,022 INFO L137 Inliner]: procedures = 44, calls = 56, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 626 [2022-07-21 05:15:31,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:15:31,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:15:31,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:15:31,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:15:31,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:30" (1/1) ... [2022-07-21 05:15:31,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:30" (1/1) ... [2022-07-21 05:15:31,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:30" (1/1) ... [2022-07-21 05:15:31,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:30" (1/1) ... [2022-07-21 05:15:31,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:30" (1/1) ... [2022-07-21 05:15:31,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:30" (1/1) ... [2022-07-21 05:15:31,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:30" (1/1) ... [2022-07-21 05:15:31,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:15:31,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:15:31,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:15:31,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:15:31,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:30" (1/1) ... [2022-07-21 05:15:31,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:15:31,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:15:31,108 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) [2022-07-21 05:15:31,132 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 [2022-07-21 05:15:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:15:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-21 05:15:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-21 05:15:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-21 05:15:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-21 05:15:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-21 05:15:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-21 05:15:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 05:15:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 05:15:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-21 05:15:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-21 05:15:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-21 05:15:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-21 05:15:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:15:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-21 05:15:31,146 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-21 05:15:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:15:31,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:15:31,267 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:15:31,268 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:15:31,779 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:15:31,786 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:15:31,786 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-21 05:15:31,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:15:31 BoogieIcfgContainer [2022-07-21 05:15:31,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:15:31,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:15:31,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:15:31,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:15:31,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:15:30" (1/3) ... [2022-07-21 05:15:31,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e50cffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:15:31, skipping insertion in model container [2022-07-21 05:15:31,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:30" (2/3) ... [2022-07-21 05:15:31,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e50cffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:15:31, skipping insertion in model container [2022-07-21 05:15:31,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:15:31" (3/3) ... [2022-07-21 05:15:31,794 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.08.cil-2.c [2022-07-21 05:15:31,803 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:15:31,803 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:15:31,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:15:31,854 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@733a6b46, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1ee0d1c [2022-07-21 05:15:31,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:15:31,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 290 states, 257 states have (on average 1.6536964980544746) internal successors, (425), 261 states have internal predecessors, (425), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-21 05:15:31,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 05:15:31,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:31,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:15:31,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:31,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:31,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1719211472, now seen corresponding path program 1 times [2022-07-21 05:15:31,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:31,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007127901] [2022-07-21 05:15:31,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:31,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:32,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:32,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:15:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:32,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 05:15:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:32,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:15:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:32,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:15:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:32,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:32,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:32,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007127901] [2022-07-21 05:15:32,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007127901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:32,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:32,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:15:32,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149525011] [2022-07-21 05:15:32,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:32,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:15:32,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:32,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:15:32,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:15:32,349 INFO L87 Difference]: Start difference. First operand has 290 states, 257 states have (on average 1.6536964980544746) internal successors, (425), 261 states have internal predecessors, (425), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:33,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:33,337 INFO L93 Difference]: Finished difference Result 666 states and 1098 transitions. [2022-07-21 05:15:33,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:15:33,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 05:15:33,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:33,350 INFO L225 Difference]: With dead ends: 666 [2022-07-21 05:15:33,350 INFO L226 Difference]: Without dead ends: 382 [2022-07-21 05:15:33,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:15:33,360 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 744 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:33,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 799 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 05:15:33,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-21 05:15:33,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 284. [2022-07-21 05:15:33,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 253 states have (on average 1.565217391304348) internal successors, (396), 255 states have internal predecessors, (396), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-21 05:15:33,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 442 transitions. [2022-07-21 05:15:33,428 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 442 transitions. Word has length 134 [2022-07-21 05:15:33,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:33,429 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 442 transitions. [2022-07-21 05:15:33,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:33,429 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 442 transitions. [2022-07-21 05:15:33,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 05:15:33,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:33,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:15:33,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:15:33,433 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:33,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:33,434 INFO L85 PathProgramCache]: Analyzing trace with hash 857377870, now seen corresponding path program 1 times [2022-07-21 05:15:33,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:33,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247319478] [2022-07-21 05:15:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:33,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:33,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:33,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:15:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:33,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 05:15:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:33,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:15:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:33,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:15:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:33,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:33,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247319478] [2022-07-21 05:15:33,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247319478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:33,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:33,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:15:33,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496711829] [2022-07-21 05:15:33,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:33,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:15:33,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:33,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:15:33,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:15:33,603 INFO L87 Difference]: Start difference. First operand 284 states and 442 transitions. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 4 states have internal predecessors, (123), 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) [2022-07-21 05:15:35,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:35,330 INFO L93 Difference]: Finished difference Result 1026 states and 1633 transitions. [2022-07-21 05:15:35,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:15:35,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 4 states have internal predecessors, (123), 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 134 [2022-07-21 05:15:35,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:35,337 INFO L225 Difference]: With dead ends: 1026 [2022-07-21 05:15:35,337 INFO L226 Difference]: Without dead ends: 758 [2022-07-21 05:15:35,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:15:35,339 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 1109 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:35,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 1250 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 05:15:35,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-07-21 05:15:35,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 561. [2022-07-21 05:15:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 506 states have (on average 1.5770750988142292) internal successors, (798), 509 states have internal predecessors, (798), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-21 05:15:35,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 881 transitions. [2022-07-21 05:15:35,392 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 881 transitions. Word has length 134 [2022-07-21 05:15:35,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:35,394 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 881 transitions. [2022-07-21 05:15:35,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 4 states have internal predecessors, (123), 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) [2022-07-21 05:15:35,394 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 881 transitions. [2022-07-21 05:15:35,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 05:15:35,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:35,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:15:35,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:15:35,398 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:35,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:35,399 INFO L85 PathProgramCache]: Analyzing trace with hash -504624566, now seen corresponding path program 1 times [2022-07-21 05:15:35,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:35,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17154227] [2022-07-21 05:15:35,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:35,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:35,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:35,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:15:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:35,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 05:15:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:35,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:15:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:35,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:15:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:35,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:35,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:35,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17154227] [2022-07-21 05:15:35,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17154227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:35,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:35,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:35,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995053587] [2022-07-21 05:15:35,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:35,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:35,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:35,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:35,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:35,597 INFO L87 Difference]: Start difference. First operand 561 states and 881 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:15:37,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:37,480 INFO L93 Difference]: Finished difference Result 1689 states and 2691 transitions. [2022-07-21 05:15:37,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:37,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 134 [2022-07-21 05:15:37,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:37,486 INFO L225 Difference]: With dead ends: 1689 [2022-07-21 05:15:37,487 INFO L226 Difference]: Without dead ends: 1144 [2022-07-21 05:15:37,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:37,489 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 1121 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:37,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 2186 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 05:15:37,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2022-07-21 05:15:37,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 819. [2022-07-21 05:15:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 740 states have (on average 1.5702702702702702) internal successors, (1162), 744 states have internal predecessors, (1162), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-07-21 05:15:37,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1281 transitions. [2022-07-21 05:15:37,536 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1281 transitions. Word has length 134 [2022-07-21 05:15:37,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:37,537 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1281 transitions. [2022-07-21 05:15:37,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:15:37,537 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1281 transitions. [2022-07-21 05:15:37,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 05:15:37,554 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:37,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:15:37,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:15:37,555 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:37,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:37,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1424307660, now seen corresponding path program 1 times [2022-07-21 05:15:37,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:37,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808706785] [2022-07-21 05:15:37,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:37,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:37,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:37,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:15:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:37,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 05:15:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:37,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:15:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:37,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:15:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:37,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:37,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:37,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808706785] [2022-07-21 05:15:37,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808706785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:37,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:37,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:37,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404627468] [2022-07-21 05:15:37,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:37,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:37,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:37,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:37,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:37,645 INFO L87 Difference]: Start difference. First operand 819 states and 1281 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:15:39,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:39,446 INFO L93 Difference]: Finished difference Result 2666 states and 4239 transitions. [2022-07-21 05:15:39,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:39,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 134 [2022-07-21 05:15:39,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:39,454 INFO L225 Difference]: With dead ends: 2666 [2022-07-21 05:15:39,455 INFO L226 Difference]: Without dead ends: 1863 [2022-07-21 05:15:39,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:39,458 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 1200 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:39,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 1501 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 05:15:39,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2022-07-21 05:15:39,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1336. [2022-07-21 05:15:39,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1209 states have (on average 1.564102564102564) internal successors, (1891), 1215 states have internal predecessors, (1891), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-07-21 05:15:39,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 2086 transitions. [2022-07-21 05:15:39,556 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 2086 transitions. Word has length 134 [2022-07-21 05:15:39,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:39,556 INFO L495 AbstractCegarLoop]: Abstraction has 1336 states and 2086 transitions. [2022-07-21 05:15:39,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:15:39,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 2086 transitions. [2022-07-21 05:15:39,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 05:15:39,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:39,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:15:39,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:15:39,563 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:39,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:39,563 INFO L85 PathProgramCache]: Analyzing trace with hash -868773366, now seen corresponding path program 1 times [2022-07-21 05:15:39,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:39,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367925995] [2022-07-21 05:15:39,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:39,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:39,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:39,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:15:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:39,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 05:15:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:39,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:15:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:39,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:15:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:39,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:39,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:39,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367925995] [2022-07-21 05:15:39,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367925995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:39,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:39,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:39,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566358189] [2022-07-21 05:15:39,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:39,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:39,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:39,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:39,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:39,679 INFO L87 Difference]: Start difference. First operand 1336 states and 2086 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:15:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:41,593 INFO L93 Difference]: Finished difference Result 4547 states and 7204 transitions. [2022-07-21 05:15:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:41,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 134 [2022-07-21 05:15:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:41,605 INFO L225 Difference]: With dead ends: 4547 [2022-07-21 05:15:41,605 INFO L226 Difference]: Without dead ends: 3227 [2022-07-21 05:15:41,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:41,611 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 1113 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:41,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 2176 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 05:15:41,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2022-07-21 05:15:41,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2371. [2022-07-21 05:15:41,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2148 states have (on average 1.559124767225326) internal successors, (3349), 2158 states have internal predecessors, (3349), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-07-21 05:15:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 3702 transitions. [2022-07-21 05:15:41,736 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 3702 transitions. Word has length 134 [2022-07-21 05:15:41,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:41,737 INFO L495 AbstractCegarLoop]: Abstraction has 2371 states and 3702 transitions. [2022-07-21 05:15:41,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:15:41,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 3702 transitions. [2022-07-21 05:15:41,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 05:15:41,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:41,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:15:41,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:15:41,740 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:41,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:41,741 INFO L85 PathProgramCache]: Analyzing trace with hash 858371596, now seen corresponding path program 1 times [2022-07-21 05:15:41,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:41,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125532627] [2022-07-21 05:15:41,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:41,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:41,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:41,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:15:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:41,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 05:15:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:41,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:15:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:41,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:15:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:41,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:41,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125532627] [2022-07-21 05:15:41,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125532627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:41,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:41,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:41,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730967778] [2022-07-21 05:15:41,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:41,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:41,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:41,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:41,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:41,846 INFO L87 Difference]: Start difference. First operand 2371 states and 3702 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:15:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:43,845 INFO L93 Difference]: Finished difference Result 8308 states and 13150 transitions. [2022-07-21 05:15:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:43,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 134 [2022-07-21 05:15:43,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:43,864 INFO L225 Difference]: With dead ends: 8308 [2022-07-21 05:15:43,864 INFO L226 Difference]: Without dead ends: 5953 [2022-07-21 05:15:43,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:43,871 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 1109 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:43,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 2172 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 05:15:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5953 states. [2022-07-21 05:15:44,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5953 to 4446. [2022-07-21 05:15:44,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4031 states have (on average 1.555693376333416) internal successors, (6271), 4049 states have internal predecessors, (6271), 296 states have call successors, (296), 103 states have call predecessors, (296), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-07-21 05:15:44,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 6958 transitions. [2022-07-21 05:15:44,094 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 6958 transitions. Word has length 134 [2022-07-21 05:15:44,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:44,095 INFO L495 AbstractCegarLoop]: Abstraction has 4446 states and 6958 transitions. [2022-07-21 05:15:44,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:15:44,095 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 6958 transitions. [2022-07-21 05:15:44,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 05:15:44,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:44,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:15:44,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:15:44,098 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:44,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:44,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1329727946, now seen corresponding path program 1 times [2022-07-21 05:15:44,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:44,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776632971] [2022-07-21 05:15:44,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:44,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:44,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:44,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:15:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 05:15:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:44,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:15:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:44,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:15:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:44,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:44,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776632971] [2022-07-21 05:15:44,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776632971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:44,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:44,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:44,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156524820] [2022-07-21 05:15:44,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:44,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:44,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:44,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:44,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:44,202 INFO L87 Difference]: Start difference. First operand 4446 states and 6958 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:15:46,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:46,206 INFO L93 Difference]: Finished difference Result 15829 states and 25100 transitions. [2022-07-21 05:15:46,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:46,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 134 [2022-07-21 05:15:46,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:46,251 INFO L225 Difference]: With dead ends: 15829 [2022-07-21 05:15:46,251 INFO L226 Difference]: Without dead ends: 11399 [2022-07-21 05:15:46,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:46,267 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 1105 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:46,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 2168 Invalid, 2298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 05:15:46,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11399 states. [2022-07-21 05:15:46,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11399 to 8609. [2022-07-21 05:15:46,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8609 states, 7810 states have (on average 1.5535211267605633) internal successors, (12133), 7844 states have internal predecessors, (12133), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-07-21 05:15:46,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8609 states to 8609 states and 13542 transitions. [2022-07-21 05:15:46,717 INFO L78 Accepts]: Start accepts. Automaton has 8609 states and 13542 transitions. Word has length 134 [2022-07-21 05:15:46,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:46,718 INFO L495 AbstractCegarLoop]: Abstraction has 8609 states and 13542 transitions. [2022-07-21 05:15:46,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:15:46,718 INFO L276 IsEmpty]: Start isEmpty. Operand 8609 states and 13542 transitions. [2022-07-21 05:15:46,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 05:15:46,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:46,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:15:46,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:15:46,724 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:46,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:46,724 INFO L85 PathProgramCache]: Analyzing trace with hash -317634996, now seen corresponding path program 1 times [2022-07-21 05:15:46,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:46,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085309493] [2022-07-21 05:15:46,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:46,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:46,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:46,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:15:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:46,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 05:15:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:46,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:15:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:46,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:15:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:46,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:46,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085309493] [2022-07-21 05:15:46,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085309493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:46,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:46,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:46,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855223916] [2022-07-21 05:15:46,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:46,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:46,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:46,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:46,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:46,855 INFO L87 Difference]: Start difference. First operand 8609 states and 13542 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:15:49,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:49,619 INFO L93 Difference]: Finished difference Result 30870 states and 49190 transitions. [2022-07-21 05:15:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:49,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 134 [2022-07-21 05:15:49,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:49,696 INFO L225 Difference]: With dead ends: 30870 [2022-07-21 05:15:49,696 INFO L226 Difference]: Without dead ends: 22277 [2022-07-21 05:15:49,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:49,730 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 1104 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 2216 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:49,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 2162 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2216 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 05:15:49,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22277 states. [2022-07-21 05:15:50,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22277 to 16964. [2022-07-21 05:15:50,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16964 states, 15397 states have (on average 1.5521854906800026) internal successors, (23899), 15463 states have internal predecessors, (23899), 1112 states have call successors, (1112), 391 states have call predecessors, (1112), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2022-07-21 05:15:50,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16964 states to 16964 states and 26914 transitions. [2022-07-21 05:15:50,603 INFO L78 Accepts]: Start accepts. Automaton has 16964 states and 26914 transitions. Word has length 134 [2022-07-21 05:15:50,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:50,603 INFO L495 AbstractCegarLoop]: Abstraction has 16964 states and 26914 transitions. [2022-07-21 05:15:50,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:15:50,603 INFO L276 IsEmpty]: Start isEmpty. Operand 16964 states and 26914 transitions. [2022-07-21 05:15:50,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 05:15:50,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:50,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:15:50,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:15:50,612 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:50,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:50,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1845981578, now seen corresponding path program 1 times [2022-07-21 05:15:50,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:50,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36331708] [2022-07-21 05:15:50,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:50,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:50,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:50,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:15:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:50,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 05:15:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:50,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:15:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:50,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:15:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:50,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:50,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36331708] [2022-07-21 05:15:50,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36331708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:50,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:50,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:50,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952749742] [2022-07-21 05:15:50,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:50,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:50,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:50,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:50,693 INFO L87 Difference]: Start difference. First operand 16964 states and 26914 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:15:54,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:54,569 INFO L93 Difference]: Finished difference Result 60888 states and 97844 transitions. [2022-07-21 05:15:54,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:54,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 134 [2022-07-21 05:15:54,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:54,703 INFO L225 Difference]: With dead ends: 60888 [2022-07-21 05:15:54,704 INFO L226 Difference]: Without dead ends: 43940 [2022-07-21 05:15:54,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:54,749 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 1099 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 2154 SdHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:54,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 2154 Invalid, 2274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 05:15:54,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43940 states. [2022-07-21 05:15:56,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43940 to 33800. [2022-07-21 05:15:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33800 states, 30697 states have (on average 1.5523015278365964) internal successors, (47651), 30827 states have internal predecessors, (47651), 2200 states have call successors, (2200), 775 states have call predecessors, (2200), 902 states have return successors, (4513), 2325 states have call predecessors, (4513), 2198 states have call successors, (4513) [2022-07-21 05:15:56,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33800 states to 33800 states and 54364 transitions. [2022-07-21 05:15:56,753 INFO L78 Accepts]: Start accepts. Automaton has 33800 states and 54364 transitions. Word has length 134 [2022-07-21 05:15:56,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:56,754 INFO L495 AbstractCegarLoop]: Abstraction has 33800 states and 54364 transitions. [2022-07-21 05:15:56,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:15:56,754 INFO L276 IsEmpty]: Start isEmpty. Operand 33800 states and 54364 transitions. [2022-07-21 05:15:56,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 05:15:56,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:56,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:15:56,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:15:56,771 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:56,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:56,771 INFO L85 PathProgramCache]: Analyzing trace with hash -127183800, now seen corresponding path program 1 times [2022-07-21 05:15:56,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:56,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240867305] [2022-07-21 05:15:56,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:56,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:56,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:56,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:15:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:56,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 05:15:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:56,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:15:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:56,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:15:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:56,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:56,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240867305] [2022-07-21 05:15:56,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240867305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:56,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:56,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:56,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961606727] [2022-07-21 05:15:56,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:56,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:56,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:56,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:56,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:56,875 INFO L87 Difference]: Start difference. First operand 33800 states and 54364 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:16:05,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:05,315 INFO L93 Difference]: Finished difference Result 136542 states and 220810 transitions. [2022-07-21 05:16:05,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:16:05,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 134 [2022-07-21 05:16:05,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:05,760 INFO L225 Difference]: With dead ends: 136542 [2022-07-21 05:16:05,761 INFO L226 Difference]: Without dead ends: 102758 [2022-07-21 05:16:06,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:16:06,097 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1428 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 2264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:06,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 2139 Invalid, 2264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 05:16:06,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102758 states. [2022-07-21 05:16:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102758 to 67213. [2022-07-21 05:16:10,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67213 states, 61166 states have (on average 1.554540103979335) internal successors, (95085), 61424 states have internal predecessors, (95085), 4248 states have call successors, (4248), 1543 states have call predecessors, (4248), 1798 states have return successors, (11063), 4501 states have call predecessors, (11063), 4246 states have call successors, (11063) [2022-07-21 05:16:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67213 states to 67213 states and 110396 transitions. [2022-07-21 05:16:10,469 INFO L78 Accepts]: Start accepts. Automaton has 67213 states and 110396 transitions. Word has length 134 [2022-07-21 05:16:10,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:10,469 INFO L495 AbstractCegarLoop]: Abstraction has 67213 states and 110396 transitions. [2022-07-21 05:16:10,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:16:10,470 INFO L276 IsEmpty]: Start isEmpty. Operand 67213 states and 110396 transitions. [2022-07-21 05:16:10,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 05:16:10,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:10,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:16:10,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:16:10,544 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:10,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:10,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2025923018, now seen corresponding path program 1 times [2022-07-21 05:16:10,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:10,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043286293] [2022-07-21 05:16:10,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:10,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:10,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:10,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:16:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:10,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 05:16:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:10,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:16:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:10,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:16:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:10,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:10,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043286293] [2022-07-21 05:16:10,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043286293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:10,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:10,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:10,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328168051] [2022-07-21 05:16:10,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:10,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:10,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:10,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:10,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:10,655 INFO L87 Difference]: Start difference. First operand 67213 states and 110396 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:16:27,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:27,105 INFO L93 Difference]: Finished difference Result 268137 states and 442424 transitions. [2022-07-21 05:16:27,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:16:27,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 134 [2022-07-21 05:16:27,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:27,832 INFO L225 Difference]: With dead ends: 268137 [2022-07-21 05:16:27,833 INFO L226 Difference]: Without dead ends: 200940 [2022-07-21 05:16:28,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:16:28,259 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 1246 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:28,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 1631 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 05:16:28,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200940 states. [2022-07-21 05:16:36,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200940 to 131350. [2022-07-21 05:16:36,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131350 states, 119543 states have (on average 1.5515002969642722) internal successors, (185471), 120057 states have internal predecessors, (185471), 8216 states have call successors, (8216), 3079 states have call predecessors, (8216), 3590 states have return successors, (28409), 8725 states have call predecessors, (28409), 8214 states have call successors, (28409) [2022-07-21 05:16:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131350 states to 131350 states and 222096 transitions. [2022-07-21 05:16:37,228 INFO L78 Accepts]: Start accepts. Automaton has 131350 states and 222096 transitions. Word has length 134 [2022-07-21 05:16:37,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:37,229 INFO L495 AbstractCegarLoop]: Abstraction has 131350 states and 222096 transitions. [2022-07-21 05:16:37,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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) [2022-07-21 05:16:37,229 INFO L276 IsEmpty]: Start isEmpty. Operand 131350 states and 222096 transitions. [2022-07-21 05:16:37,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 05:16:37,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:37,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:16:37,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:16:37,393 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:37,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:37,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1402641416, now seen corresponding path program 1 times [2022-07-21 05:16:37,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:37,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837217527] [2022-07-21 05:16:37,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:37,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:37,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:37,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:16:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:37,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 05:16:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:37,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:16:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:37,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:16:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:37,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:37,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837217527] [2022-07-21 05:16:37,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837217527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:37,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:37,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:37,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164898566] [2022-07-21 05:16:37,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:37,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:37,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:37,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:37,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:37,474 INFO L87 Difference]: Start difference. First operand 131350 states and 222096 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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)