./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.07.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6baa92d18991a792383fc99c5c300f37f700ba00714b15a3dbe7d2191a67ca9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:38:56,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:38:56,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:38:56,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:38:56,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:38:56,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:38:56,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:38:56,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:38:56,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:38:56,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:38:56,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:38:56,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:38:56,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:38:56,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:38:56,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:38:56,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:38:56,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:38:56,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:38:56,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:38:56,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:38:56,087 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:38:56,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:38:56,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:38:56,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:38:56,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:38:56,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:38:56,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:38:56,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:38:56,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:38:56,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:38:56,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:38:56,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:38:56,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:38:56,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:38:56,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:38:56,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:38:56,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:38:56,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:38:56,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:38:56,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:38:56,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:38:56,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:38:56,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:38:56,138 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:38:56,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:38:56,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:38:56,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:38:56,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:38:56,139 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:38:56,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:38:56,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:38:56,140 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:38:56,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:38:56,141 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:38:56,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:38:56,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:38:56,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:38:56,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:38:56,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:38:56,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:38:56,142 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:38:56,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:38:56,144 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:38:56,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:38:56,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:38:56,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:38:56,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:38:56,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:38:56,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:38:56,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:38:56,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:38:56,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:38:56,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:38:56,146 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:38:56,146 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:38:56,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:38:56,146 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6baa92d18991a792383fc99c5c300f37f700ba00714b15a3dbe7d2191a67ca9 [2022-07-19 17:38:56,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:38:56,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:38:56,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:38:56,386 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:38:56,386 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:38:56,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.07.cil-1.c [2022-07-19 17:38:56,446 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81411d2a2/16262533d6ad478f96b06bf28c37f787/FLAGcab25627e [2022-07-19 17:38:56,824 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:38:56,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.07.cil-1.c [2022-07-19 17:38:56,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81411d2a2/16262533d6ad478f96b06bf28c37f787/FLAGcab25627e [2022-07-19 17:38:57,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81411d2a2/16262533d6ad478f96b06bf28c37f787 [2022-07-19 17:38:57,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:38:57,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:38:57,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:38:57,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:38:57,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:38:57,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:38:57" (1/1) ... [2022-07-19 17:38:57,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7d8a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:38:57, skipping insertion in model container [2022-07-19 17:38:57,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:38:57" (1/1) ... [2022-07-19 17:38:57,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:38:57,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:38:57,441 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.07.cil-1.c[671,684] [2022-07-19 17:38:57,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:38:57,557 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:38:57,567 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.07.cil-1.c[671,684] [2022-07-19 17:38:57,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:38:57,622 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:38:57,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:38:57 WrapperNode [2022-07-19 17:38:57,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:38:57,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:38:57,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:38:57,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:38:57,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:38:57" (1/1) ... [2022-07-19 17:38:57,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:38:57" (1/1) ... [2022-07-19 17:38:57,668 INFO L137 Inliner]: procedures = 42, calls = 52, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 563 [2022-07-19 17:38:57,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:38:57,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:38:57,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:38:57,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:38:57,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:38:57" (1/1) ... [2022-07-19 17:38:57,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:38:57" (1/1) ... [2022-07-19 17:38:57,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:38:57" (1/1) ... [2022-07-19 17:38:57,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:38:57" (1/1) ... [2022-07-19 17:38:57,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:38:57" (1/1) ... [2022-07-19 17:38:57,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:38:57" (1/1) ... [2022-07-19 17:38:57,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:38:57" (1/1) ... [2022-07-19 17:38:57,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:38:57,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:38:57,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:38:57,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:38:57,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:38:57" (1/1) ... [2022-07-19 17:38:57,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:38:57,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:38:57,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 17:38:57,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 17:38:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:38:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-19 17:38:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-19 17:38:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-19 17:38:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-19 17:38:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 17:38:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 17:38:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-19 17:38:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-19 17:38:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-19 17:38:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-19 17:38:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:38:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-19 17:38:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-19 17:38:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:38:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:38:57,875 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:38:57,876 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:38:58,395 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:38:58,403 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:38:58,416 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-19 17:38:58,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:38:58 BoogieIcfgContainer [2022-07-19 17:38:58,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:38:58,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:38:58,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:38:58,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:38:58,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:38:57" (1/3) ... [2022-07-19 17:38:58,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d25796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:38:58, skipping insertion in model container [2022-07-19 17:38:58,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:38:57" (2/3) ... [2022-07-19 17:38:58,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d25796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:38:58, skipping insertion in model container [2022-07-19 17:38:58,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:38:58" (3/3) ... [2022-07-19 17:38:58,430 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.07.cil-1.c [2022-07-19 17:38:58,442 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:38:58,443 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:38:58,512 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:38:58,518 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@41019cf7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@636ff81b [2022-07-19 17:38:58,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:38:58,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 257 states, 228 states have (on average 1.6403508771929824) internal successors, (374), 230 states have internal predecessors, (374), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-19 17:38:58,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 17:38:58,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:38:58,539 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] [2022-07-19 17:38:58,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:38:58,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:38:58,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1244589581, now seen corresponding path program 1 times [2022-07-19 17:38:58,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:38:58,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362605498] [2022-07-19 17:38:58,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:38:58,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:38:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:38:58,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:38:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:38:58,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:38:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:38:58,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:38:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:38:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:38:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:38:58,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:38:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:38:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:38:58,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:38:58,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362605498] [2022-07-19 17:38:58,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362605498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:38:58,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:38:58,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:38:58,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139569489] [2022-07-19 17:38:58,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:38:58,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:38:58,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:38:58,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:38:58,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:38:58,894 INFO L87 Difference]: Start difference. First operand has 257 states, 228 states have (on average 1.6403508771929824) internal successors, (374), 230 states have internal predecessors, (374), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:38:59,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:38:59,819 INFO L93 Difference]: Finished difference Result 592 states and 969 transitions. [2022-07-19 17:38:59,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:38:59,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2022-07-19 17:38:59,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:38:59,846 INFO L225 Difference]: With dead ends: 592 [2022-07-19 17:38:59,847 INFO L226 Difference]: Without dead ends: 339 [2022-07-19 17:38:59,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:38:59,856 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 657 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:38:59,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 697 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 17:38:59,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-19 17:38:59,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 252. [2022-07-19 17:38:59,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 224 states have (on average 1.5491071428571428) internal successors, (347), 225 states have internal predecessors, (347), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-19 17:38:59,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 389 transitions. [2022-07-19 17:38:59,931 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 389 transitions. Word has length 122 [2022-07-19 17:38:59,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:38:59,932 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 389 transitions. [2022-07-19 17:38:59,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:38:59,933 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 389 transitions. [2022-07-19 17:38:59,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 17:38:59,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:38:59,942 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] [2022-07-19 17:38:59,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 17:38:59,943 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:38:59,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:38:59,944 INFO L85 PathProgramCache]: Analyzing trace with hash -482555381, now seen corresponding path program 1 times [2022-07-19 17:38:59,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:38:59,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552818994] [2022-07-19 17:38:59,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:38:59,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:38:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:00,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:39:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:00,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:39:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:00,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:39:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:00,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:39:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:00,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:39:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:00,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:39:00,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:39:00,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552818994] [2022-07-19 17:39:00,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552818994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:39:00,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:39:00,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:39:00,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684225702] [2022-07-19 17:39:00,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:39:00,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:39:00,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:39:00,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:39:00,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:39:00,144 INFO L87 Difference]: Start difference. First operand 252 states and 389 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:01,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:39:01,762 INFO L93 Difference]: Finished difference Result 908 states and 1436 transitions. [2022-07-19 17:39:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:39:01,763 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2022-07-19 17:39:01,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:39:01,768 INFO L225 Difference]: With dead ends: 908 [2022-07-19 17:39:01,770 INFO L226 Difference]: Without dead ends: 671 [2022-07-19 17:39:01,773 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 [2022-07-19 17:39:01,777 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 981 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:39:01,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1085 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 17:39:01,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-07-19 17:39:01,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 498. [2022-07-19 17:39:01,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 447 states have (on average 1.5615212527964206) internal successors, (698), 449 states have internal predecessors, (698), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-07-19 17:39:01,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 775 transitions. [2022-07-19 17:39:01,831 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 775 transitions. Word has length 122 [2022-07-19 17:39:01,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:39:01,832 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 775 transitions. [2022-07-19 17:39:01,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:01,832 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 775 transitions. [2022-07-19 17:39:01,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 17:39:01,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:39:01,833 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] [2022-07-19 17:39:01,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 17:39:01,834 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:39:01,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:39:01,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1208119409, now seen corresponding path program 1 times [2022-07-19 17:39:01,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:39:01,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460584681] [2022-07-19 17:39:01,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:39:01,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:39:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:01,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:39:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:01,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:39:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:01,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:39:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:01,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:39:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:01,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:39:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:39:01,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:39:01,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460584681] [2022-07-19 17:39:01,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460584681] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:39:01,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:39:01,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:39:01,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79662523] [2022-07-19 17:39:01,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:39:01,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:39:01,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:39:01,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:39:01,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:39:01,987 INFO L87 Difference]: Start difference. First operand 498 states and 775 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:03,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:39:03,937 INFO L93 Difference]: Finished difference Result 1498 states and 2371 transitions. [2022-07-19 17:39:03,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:39:03,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2022-07-19 17:39:03,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:39:03,944 INFO L225 Difference]: With dead ends: 1498 [2022-07-19 17:39:03,944 INFO L226 Difference]: Without dead ends: 1015 [2022-07-19 17:39:03,946 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 [2022-07-19 17:39:03,947 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 994 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:39:03,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 1875 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 17:39:03,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-07-19 17:39:03,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 728. [2022-07-19 17:39:03,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 654 states have (on average 1.555045871559633) internal successors, (1017), 657 states have internal predecessors, (1017), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-07-19 17:39:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1128 transitions. [2022-07-19 17:39:03,996 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1128 transitions. Word has length 122 [2022-07-19 17:39:03,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:39:03,996 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1128 transitions. [2022-07-19 17:39:03,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:03,997 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1128 transitions. [2022-07-19 17:39:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 17:39:03,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:39:03,998 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] [2022-07-19 17:39:03,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 17:39:03,999 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:39:03,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:39:03,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1053453841, now seen corresponding path program 1 times [2022-07-19 17:39:04,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:39:04,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491492217] [2022-07-19 17:39:04,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:39:04,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:39:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:04,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:39:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:04,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:39:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:04,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:39:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:04,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:39:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:04,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:39:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:39:04,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:39:04,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491492217] [2022-07-19 17:39:04,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491492217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:39:04,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:39:04,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:39:04,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845827470] [2022-07-19 17:39:04,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:39:04,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:39:04,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:39:04,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:39:04,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:39:04,134 INFO L87 Difference]: Start difference. First operand 728 states and 1128 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:06,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:39:06,023 INFO L93 Difference]: Finished difference Result 2365 states and 3732 transitions. [2022-07-19 17:39:06,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:39:06,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2022-07-19 17:39:06,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:39:06,034 INFO L225 Difference]: With dead ends: 2365 [2022-07-19 17:39:06,034 INFO L226 Difference]: Without dead ends: 1652 [2022-07-19 17:39:06,037 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 [2022-07-19 17:39:06,052 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 990 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:39:06,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 1868 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 17:39:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2022-07-19 17:39:06,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1191. [2022-07-19 17:39:06,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1071 states have (on average 1.549953314659197) internal successors, (1660), 1076 states have internal predecessors, (1660), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2022-07-19 17:39:06,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1843 transitions. [2022-07-19 17:39:06,157 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1843 transitions. Word has length 122 [2022-07-19 17:39:06,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:39:06,158 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 1843 transitions. [2022-07-19 17:39:06,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:06,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1843 transitions. [2022-07-19 17:39:06,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 17:39:06,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:39:06,160 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] [2022-07-19 17:39:06,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 17:39:06,161 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:39:06,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:39:06,161 INFO L85 PathProgramCache]: Analyzing trace with hash -813254833, now seen corresponding path program 1 times [2022-07-19 17:39:06,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:39:06,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081307498] [2022-07-19 17:39:06,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:39:06,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:39:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:06,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:39:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:06,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:39:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:06,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:39:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:06,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:39:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:06,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:39:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:39:06,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:39:06,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081307498] [2022-07-19 17:39:06,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081307498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:39:06,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:39:06,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:39:06,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867171317] [2022-07-19 17:39:06,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:39:06,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:39:06,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:39:06,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:39:06,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:39:06,264 INFO L87 Difference]: Start difference. First operand 1191 states and 1843 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:39:08,218 INFO L93 Difference]: Finished difference Result 4042 states and 6355 transitions. [2022-07-19 17:39:08,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:39:08,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2022-07-19 17:39:08,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:39:08,233 INFO L225 Difference]: With dead ends: 4042 [2022-07-19 17:39:08,233 INFO L226 Difference]: Without dead ends: 2866 [2022-07-19 17:39:08,237 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 [2022-07-19 17:39:08,240 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 989 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:39:08,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 1863 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 17:39:08,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2022-07-19 17:39:08,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2120. [2022-07-19 17:39:08,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2120 states, 1908 states have (on average 1.5461215932914045) internal successors, (2950), 1917 states have internal predecessors, (2950), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2022-07-19 17:39:08,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 3283 transitions. [2022-07-19 17:39:08,382 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 3283 transitions. Word has length 122 [2022-07-19 17:39:08,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:39:08,383 INFO L495 AbstractCegarLoop]: Abstraction has 2120 states and 3283 transitions. [2022-07-19 17:39:08,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:08,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 3283 transitions. [2022-07-19 17:39:08,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 17:39:08,385 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:39:08,386 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] [2022-07-19 17:39:08,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 17:39:08,386 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:39:08,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:39:08,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2120397231, now seen corresponding path program 1 times [2022-07-19 17:39:08,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:39:08,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22281090] [2022-07-19 17:39:08,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:39:08,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:39:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:08,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:39:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:39:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:08,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:39:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:08,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:39:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:39:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:39:08,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:39:08,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22281090] [2022-07-19 17:39:08,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22281090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:39:08,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:39:08,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:39:08,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872145649] [2022-07-19 17:39:08,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:39:08,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:39:08,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:39:08,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:39:08,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:39:08,503 INFO L87 Difference]: Start difference. First operand 2120 states and 3283 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:10,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:39:10,325 INFO L93 Difference]: Finished difference Result 7397 states and 11621 transitions. [2022-07-19 17:39:10,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:39:10,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2022-07-19 17:39:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:39:10,353 INFO L225 Difference]: With dead ends: 7397 [2022-07-19 17:39:10,353 INFO L226 Difference]: Without dead ends: 5292 [2022-07-19 17:39:10,361 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 [2022-07-19 17:39:10,363 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 988 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 2033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:39:10,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1858 Invalid, 2033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 17:39:10,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5292 states. [2022-07-19 17:39:10,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5292 to 3985. [2022-07-19 17:39:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3985 states, 3589 states have (on average 1.5436054611312344) internal successors, (5540), 3606 states have internal predecessors, (5540), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-07-19 17:39:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3985 states to 3985 states and 6191 transitions. [2022-07-19 17:39:10,646 INFO L78 Accepts]: Start accepts. Automaton has 3985 states and 6191 transitions. Word has length 122 [2022-07-19 17:39:10,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:39:10,646 INFO L495 AbstractCegarLoop]: Abstraction has 3985 states and 6191 transitions. [2022-07-19 17:39:10,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:10,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3985 states and 6191 transitions. [2022-07-19 17:39:10,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 17:39:10,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:39:10,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:39:10,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:39:10,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:39:10,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:39:10,652 INFO L85 PathProgramCache]: Analyzing trace with hash -222900465, now seen corresponding path program 1 times [2022-07-19 17:39:10,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:39:10,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840990534] [2022-07-19 17:39:10,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:39:10,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:39:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:10,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:39:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:39:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:10,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:39:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:39:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:10,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:39:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:39:10,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:39:10,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840990534] [2022-07-19 17:39:10,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840990534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:39:10,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:39:10,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:39:10,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099032172] [2022-07-19 17:39:10,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:39:10,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:39:10,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:39:10,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:39:10,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:39:10,767 INFO L87 Difference]: Start difference. First operand 3985 states and 6191 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:12,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:39:12,569 INFO L93 Difference]: Finished difference Result 14108 states and 22215 transitions. [2022-07-19 17:39:12,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:39:12,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2022-07-19 17:39:12,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:39:12,634 INFO L225 Difference]: With dead ends: 14108 [2022-07-19 17:39:12,634 INFO L226 Difference]: Without dead ends: 10138 [2022-07-19 17:39:12,649 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 [2022-07-19 17:39:12,651 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1046 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:39:12,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1271 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1737 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 17:39:12,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10138 states. [2022-07-19 17:39:13,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10138 to 7730. [2022-07-19 17:39:13,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7730 states, 6966 states have (on average 1.5420614412862474) internal successors, (10742), 6999 states have internal predecessors, (10742), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-07-19 17:39:13,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7730 states to 7730 states and 12083 transitions. [2022-07-19 17:39:13,129 INFO L78 Accepts]: Start accepts. Automaton has 7730 states and 12083 transitions. Word has length 122 [2022-07-19 17:39:13,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:39:13,130 INFO L495 AbstractCegarLoop]: Abstraction has 7730 states and 12083 transitions. [2022-07-19 17:39:13,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:13,130 INFO L276 IsEmpty]: Start isEmpty. Operand 7730 states and 12083 transitions. [2022-07-19 17:39:13,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 17:39:13,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:39:13,137 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] [2022-07-19 17:39:13,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:39:13,137 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:39:13,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:39:13,138 INFO L85 PathProgramCache]: Analyzing trace with hash 808140433, now seen corresponding path program 1 times [2022-07-19 17:39:13,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:39:13,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813185274] [2022-07-19 17:39:13,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:39:13,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:39:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:13,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:39:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:13,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:39:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:13,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:39:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:39:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:13,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:39:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:39:13,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:39:13,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813185274] [2022-07-19 17:39:13,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813185274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:39:13,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:39:13,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:39:13,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015281321] [2022-07-19 17:39:13,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:39:13,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:39:13,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:39:13,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:39:13,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:39:13,239 INFO L87 Difference]: Start difference. First operand 7730 states and 12083 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:15,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:39:15,787 INFO L93 Difference]: Finished difference Result 27531 states and 43597 transitions. [2022-07-19 17:39:15,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:39:15,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2022-07-19 17:39:15,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:39:15,899 INFO L225 Difference]: With dead ends: 27531 [2022-07-19 17:39:15,900 INFO L226 Difference]: Without dead ends: 19816 [2022-07-19 17:39:15,945 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 [2022-07-19 17:39:15,946 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 986 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:39:15,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 1848 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 17:39:15,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19816 states. [2022-07-19 17:39:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19816 to 15251. [2022-07-19 17:39:16,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15251 states, 13751 states have (on average 1.5411242818704094) internal successors, (21192), 13816 states have internal predecessors, (21192), 1045 states have call successors, (1045), 390 states have call predecessors, (1045), 454 states have return successors, (1838), 1108 states have call predecessors, (1838), 1045 states have call successors, (1838) [2022-07-19 17:39:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15251 states to 15251 states and 24075 transitions. [2022-07-19 17:39:16,903 INFO L78 Accepts]: Start accepts. Automaton has 15251 states and 24075 transitions. Word has length 122 [2022-07-19 17:39:16,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:39:16,904 INFO L495 AbstractCegarLoop]: Abstraction has 15251 states and 24075 transitions. [2022-07-19 17:39:16,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:16,905 INFO L276 IsEmpty]: Start isEmpty. Operand 15251 states and 24075 transitions. [2022-07-19 17:39:16,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 17:39:16,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:39:16,916 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] [2022-07-19 17:39:16,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:39:16,917 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:39:16,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:39:16,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1098262833, now seen corresponding path program 1 times [2022-07-19 17:39:16,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:39:16,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504612902] [2022-07-19 17:39:16,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:39:16,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:39:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:16,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:39:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:16,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:39:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:16,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:39:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:17,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:39:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:39:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:39:17,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:39:17,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504612902] [2022-07-19 17:39:17,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504612902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:39:17,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:39:17,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:39:17,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798833709] [2022-07-19 17:39:17,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:39:17,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:39:17,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:39:17,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:39:17,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:39:17,018 INFO L87 Difference]: Start difference. First operand 15251 states and 24075 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:21,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:39:21,352 INFO L93 Difference]: Finished difference Result 61226 states and 97333 transitions. [2022-07-19 17:39:21,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:39:21,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2022-07-19 17:39:21,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:39:21,559 INFO L225 Difference]: With dead ends: 61226 [2022-07-19 17:39:21,559 INFO L226 Difference]: Without dead ends: 45990 [2022-07-19 17:39:21,628 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 [2022-07-19 17:39:21,630 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 1279 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:39:21,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 1831 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1925 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 17:39:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45990 states. [2022-07-19 17:39:23,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45990 to 30164. [2022-07-19 17:39:23,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30164 states, 27256 states have (on average 1.5430730848253595) internal successors, (42058), 27385 states have internal predecessors, (42058), 2005 states have call successors, (2005), 774 states have call predecessors, (2005), 902 states have return successors, (4320), 2132 states have call predecessors, (4320), 2005 states have call successors, (4320) [2022-07-19 17:39:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30164 states to 30164 states and 48383 transitions. [2022-07-19 17:39:23,669 INFO L78 Accepts]: Start accepts. Automaton has 30164 states and 48383 transitions. Word has length 122 [2022-07-19 17:39:23,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:39:23,669 INFO L495 AbstractCegarLoop]: Abstraction has 30164 states and 48383 transitions. [2022-07-19 17:39:23,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:23,670 INFO L276 IsEmpty]: Start isEmpty. Operand 30164 states and 48383 transitions. [2022-07-19 17:39:23,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 17:39:23,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:39:23,693 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] [2022-07-19 17:39:23,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:39:23,694 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:39:23,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:39:23,695 INFO L85 PathProgramCache]: Analyzing trace with hash 502808273, now seen corresponding path program 1 times [2022-07-19 17:39:23,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:39:23,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261368635] [2022-07-19 17:39:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:39:23,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:39:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:23,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:39:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:23,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:39:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:23,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:39:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:23,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:39:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:23,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:39:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:39:23,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:39:23,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261368635] [2022-07-19 17:39:23,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261368635] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:39:23,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:39:23,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:39:23,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246725299] [2022-07-19 17:39:23,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:39:23,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:39:23,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:39:23,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:39:23,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:39:23,803 INFO L87 Difference]: Start difference. First operand 30164 states and 48383 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:31,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:39:31,070 INFO L93 Difference]: Finished difference Result 117863 states and 190391 transitions. [2022-07-19 17:39:31,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:39:31,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2022-07-19 17:39:31,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:39:31,438 INFO L225 Difference]: With dead ends: 117863 [2022-07-19 17:39:31,438 INFO L226 Difference]: Without dead ends: 87714 [2022-07-19 17:39:31,542 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 [2022-07-19 17:39:31,543 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 1196 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 1989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:39:31,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 1822 Invalid, 1989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 17:39:31,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87714 states. [2022-07-19 17:39:35,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87714 to 60054. [2022-07-19 17:39:35,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60054 states, 54394 states have (on average 1.5463102548075156) internal successors, (84110), 54651 states have internal predecessors, (84110), 3861 states have call successors, (3861), 1542 states have call predecessors, (3861), 1798 states have return successors, (10678), 4116 states have call predecessors, (10678), 3861 states have call successors, (10678) [2022-07-19 17:39:36,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60054 states to 60054 states and 98649 transitions. [2022-07-19 17:39:36,060 INFO L78 Accepts]: Start accepts. Automaton has 60054 states and 98649 transitions. Word has length 122 [2022-07-19 17:39:36,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:39:36,061 INFO L495 AbstractCegarLoop]: Abstraction has 60054 states and 98649 transitions. [2022-07-19 17:39:36,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:36,061 INFO L276 IsEmpty]: Start isEmpty. Operand 60054 states and 98649 transitions. [2022-07-19 17:39:36,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 17:39:36,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:39:36,103 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] [2022-07-19 17:39:36,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 17:39:36,103 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:39:36,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:39:36,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1854193491, now seen corresponding path program 1 times [2022-07-19 17:39:36,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:39:36,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615617014] [2022-07-19 17:39:36,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:39:36,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:39:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:36,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:39:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:36,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:39:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:36,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:39:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:36,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:39:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:36,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:39:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:39:36,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:39:36,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615617014] [2022-07-19 17:39:36,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615617014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:39:36,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:39:36,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:39:36,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898167803] [2022-07-19 17:39:36,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:39:36,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:39:36,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:39:36,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:39:36,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:39:36,214 INFO L87 Difference]: Start difference. First operand 60054 states and 98649 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:41,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:39:41,562 INFO L93 Difference]: Finished difference Result 137486 states and 231426 transitions. [2022-07-19 17:39:41,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:39:41,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2022-07-19 17:39:41,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:39:41,970 INFO L225 Difference]: With dead ends: 137486 [2022-07-19 17:39:41,970 INFO L226 Difference]: Without dead ends: 77447 [2022-07-19 17:39:42,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:39:42,136 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 821 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:39:42,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 860 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:39:42,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77447 states. [2022-07-19 17:39:45,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77447 to 60054. [2022-07-19 17:39:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60054 states, 54394 states have (on average 1.54158546898555) internal successors, (83853), 54651 states have internal predecessors, (83853), 3861 states have call successors, (3861), 1542 states have call predecessors, (3861), 1798 states have return successors, (10678), 4116 states have call predecessors, (10678), 3861 states have call successors, (10678) [2022-07-19 17:39:46,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60054 states to 60054 states and 98392 transitions. [2022-07-19 17:39:46,286 INFO L78 Accepts]: Start accepts. Automaton has 60054 states and 98392 transitions. Word has length 122 [2022-07-19 17:39:46,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:39:46,287 INFO L495 AbstractCegarLoop]: Abstraction has 60054 states and 98392 transitions. [2022-07-19 17:39:46,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:46,287 INFO L276 IsEmpty]: Start isEmpty. Operand 60054 states and 98392 transitions. [2022-07-19 17:39:46,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 17:39:46,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:39:46,329 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] [2022-07-19 17:39:46,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:39:46,329 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:39:46,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:39:46,330 INFO L85 PathProgramCache]: Analyzing trace with hash 235218577, now seen corresponding path program 1 times [2022-07-19 17:39:46,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:39:46,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278359977] [2022-07-19 17:39:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:39:46,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:39:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:46,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:39:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:46,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:39:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:46,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:39:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:46,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:39:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:46,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:39:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:39:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:39:46,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:39:46,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278359977] [2022-07-19 17:39:46,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278359977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:39:46,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:39:46,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:39:46,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321275026] [2022-07-19 17:39:46,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:39:46,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:39:46,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:39:46,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:39:46,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:39:46,426 INFO L87 Difference]: Start difference. First operand 60054 states and 98392 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:39:58,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:39:58,748 INFO L93 Difference]: Finished difference Result 226597 states and 374215 transitions. [2022-07-19 17:39:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:39:58,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2022-07-19 17:39:58,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:39:59,764 INFO L225 Difference]: With dead ends: 226597 [2022-07-19 17:39:59,764 INFO L226 Difference]: Without dead ends: 166558 [2022-07-19 17:39:59,934 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 [2022-07-19 17:39:59,935 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 1008 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 2178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:39:59,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 1871 Invalid, 2178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 17:40:00,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166558 states. [2022-07-19 17:40:07,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166558 to 119960. [2022-07-19 17:40:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119960 states, 108924 states have (on average 1.543103448275862) internal successors, (168081), 109437 states have internal predecessors, (168081), 7445 states have call successors, (7445), 3078 states have call predecessors, (7445), 3590 states have return successors, (27640), 7956 states have call predecessors, (27640), 7445 states have call successors, (27640) [2022-07-19 17:40:07,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119960 states to 119960 states and 203166 transitions. [2022-07-19 17:40:07,921 INFO L78 Accepts]: Start accepts. Automaton has 119960 states and 203166 transitions. Word has length 122 [2022-07-19 17:40:07,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:07,921 INFO L495 AbstractCegarLoop]: Abstraction has 119960 states and 203166 transitions. [2022-07-19 17:40:07,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:07,922 INFO L276 IsEmpty]: Start isEmpty. Operand 119960 states and 203166 transitions. [2022-07-19 17:40:08,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 17:40:08,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:08,021 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] [2022-07-19 17:40:08,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 17:40:08,022 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:08,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:08,022 INFO L85 PathProgramCache]: Analyzing trace with hash -648290413, now seen corresponding path program 1 times [2022-07-19 17:40:08,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:08,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168185484] [2022-07-19 17:40:08,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:08,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:08,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:08,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:40:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:08,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:40:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:08,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:40:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:08,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 17:40:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:08,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:08,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168185484] [2022-07-19 17:40:08,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168185484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:08,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:08,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:08,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604951992] [2022-07-19 17:40:08,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:08,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:08,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:08,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:08,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:08,121 INFO L87 Difference]: Start difference. First operand 119960 states and 203166 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)