./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.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 a9f893ab935631e26843412fbbbf983c2aeac51b5ea91d56e5f6804258a66568 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 18:58:29,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 18:58:29,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 18:58:29,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 18:58:29,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 18:58:29,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 18:58:29,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 18:58:29,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 18:58:29,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 18:58:29,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 18:58:29,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 18:58:29,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 18:58:29,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 18:58:29,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 18:58:29,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 18:58:29,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 18:58:29,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 18:58:29,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 18:58:29,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 18:58:29,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 18:58:29,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 18:58:29,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 18:58:29,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 18:58:29,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 18:58:29,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 18:58:29,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 18:58:29,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 18:58:29,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 18:58:29,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 18:58:29,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 18:58:29,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 18:58:29,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 18:58:29,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 18:58:29,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 18:58:29,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 18:58:29,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 18:58:29,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 18:58:29,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 18:58:29,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 18:58:29,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 18:58:29,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 18:58:29,535 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 18:58:29,577 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 18:58:29,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 18:58:29,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 18:58:29,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 18:58:29,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 18:58:29,580 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 18:58:29,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 18:58:29,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 18:58:29,581 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 18:58:29,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 18:58:29,582 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 18:58:29,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 18:58:29,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 18:58:29,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 18:58:29,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 18:58:29,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 18:58:29,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 18:58:29,583 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 18:58:29,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 18:58:29,583 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 18:58:29,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 18:58:29,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 18:58:29,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 18:58:29,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 18:58:29,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:58:29,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 18:58:29,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 18:58:29,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 18:58:29,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 18:58:29,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 18:58:29,585 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 18:58:29,585 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 18:58:29,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 18:58:29,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 18:58:29,586 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9f893ab935631e26843412fbbbf983c2aeac51b5ea91d56e5f6804258a66568 [2021-12-17 18:58:29,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 18:58:29,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 18:58:29,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 18:58:29,893 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 18:58:29,893 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 18:58:29,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-1.c [2021-12-17 18:58:29,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6987c8904/939c0c79424d424392907c7de63d7236/FLAGa824fb1d6 [2021-12-17 18:58:30,692 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 18:58:30,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-1.c [2021-12-17 18:58:30,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6987c8904/939c0c79424d424392907c7de63d7236/FLAGa824fb1d6 [2021-12-17 18:58:30,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6987c8904/939c0c79424d424392907c7de63d7236 [2021-12-17 18:58:30,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 18:58:30,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 18:58:30,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 18:58:30,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 18:58:30,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 18:58:30,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:58:30" (1/1) ... [2021-12-17 18:58:30,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c8bdf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:30, skipping insertion in model container [2021-12-17 18:58:30,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:58:30" (1/1) ... [2021-12-17 18:58:30,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 18:58:30,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 18:58:32,227 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-1.c[380323,380336] [2021-12-17 18:58:32,246 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-1.c[383339,383352] [2021-12-17 18:58:32,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:58:32,393 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 18:58:32,978 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-1.c[380323,380336] [2021-12-17 18:58:32,989 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-1.c[383339,383352] [2021-12-17 18:58:33,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:58:33,044 INFO L208 MainTranslator]: Completed translation [2021-12-17 18:58:33,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:33 WrapperNode [2021-12-17 18:58:33,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 18:58:33,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 18:58:33,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 18:58:33,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 18:58:33,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:33" (1/1) ... [2021-12-17 18:58:33,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:33" (1/1) ... [2021-12-17 18:58:33,423 INFO L137 Inliner]: procedures = 56, calls = 60, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 12856 [2021-12-17 18:58:33,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 18:58:33,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 18:58:33,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 18:58:33,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 18:58:33,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:33" (1/1) ... [2021-12-17 18:58:33,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:33" (1/1) ... [2021-12-17 18:58:33,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:33" (1/1) ... [2021-12-17 18:58:33,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:33" (1/1) ... [2021-12-17 18:58:33,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:33" (1/1) ... [2021-12-17 18:58:33,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:33" (1/1) ... [2021-12-17 18:58:33,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:33" (1/1) ... [2021-12-17 18:58:33,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 18:58:33,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 18:58:33,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 18:58:33,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 18:58:33,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:33" (1/1) ... [2021-12-17 18:58:33,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:58:33,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:58:33,754 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) [2021-12-17 18:58:33,759 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 [2021-12-17 18:58:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 18:58:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 18:58:33,793 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 18:58:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 18:58:33,793 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 18:58:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 18:58:33,794 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 18:58:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-17 18:58:33,794 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-17 18:58:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 18:58:33,794 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 18:58:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 18:58:33,794 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 18:58:33,795 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 18:58:33,795 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 18:58:33,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 18:58:33,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 18:58:33,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 18:58:34,068 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 18:58:34,070 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 18:58:38,548 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 18:58:38,574 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 18:58:38,574 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-17 18:58:38,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:58:38 BoogieIcfgContainer [2021-12-17 18:58:38,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 18:58:38,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 18:58:38,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 18:58:38,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 18:58:38,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:58:30" (1/3) ... [2021-12-17 18:58:38,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7775c02e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:58:38, skipping insertion in model container [2021-12-17 18:58:38,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:33" (2/3) ... [2021-12-17 18:58:38,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7775c02e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:58:38, skipping insertion in model container [2021-12-17 18:58:38,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:58:38" (3/3) ... [2021-12-17 18:58:38,586 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.06.cil-1.c [2021-12-17 18:58:38,590 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 18:58:38,590 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 18:58:38,640 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 18:58:38,645 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 18:58:38,646 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 18:58:38,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 2423 states, 2391 states have (on average 1.8515265579255542) internal successors, (4427), 2396 states have internal predecessors, (4427), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-17 18:58:38,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 18:58:38,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:38,705 INFO L514 BasicCegarLoop]: 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] [2021-12-17 18:58:38,705 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:38,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:38,709 INFO L85 PathProgramCache]: Analyzing trace with hash 787057146, now seen corresponding path program 1 times [2021-12-17 18:58:38,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:38,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703438204] [2021-12-17 18:58:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:38,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:38,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:38,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 18:58:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:38,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 18:58:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:38,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 18:58:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:38,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 18:58:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:38,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:38,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703438204] [2021-12-17 18:58:38,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703438204] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:38,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:38,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 18:58:38,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874673897] [2021-12-17 18:58:38,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:38,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 18:58:38,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:38,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 18:58:38,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 18:58:38,983 INFO L87 Difference]: Start difference. First operand has 2423 states, 2391 states have (on average 1.8515265579255542) internal successors, (4427), 2396 states have internal predecessors, (4427), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:39,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:39,874 INFO L93 Difference]: Finished difference Result 4911 states and 9054 transitions. [2021-12-17 18:58:39,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:58:39,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-17 18:58:39,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:39,892 INFO L225 Difference]: With dead ends: 4911 [2021-12-17 18:58:39,892 INFO L226 Difference]: Without dead ends: 2431 [2021-12-17 18:58:39,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:58:39,900 INFO L933 BasicCegarLoop]: 4417 mSDtfsCounter, 596 mSDsluCounter, 12341 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 16758 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:39,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 16758 Invalid, 444 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [54 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 18:58:39,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-12-17 18:58:39,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2355. [2021-12-17 18:58:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2325 states have (on average 1.8391397849462365) internal successors, (4276), 2328 states have internal predecessors, (4276), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-17 18:58:39,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 4318 transitions. [2021-12-17 18:58:39,987 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 4318 transitions. Word has length 113 [2021-12-17 18:58:39,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:39,987 INFO L470 AbstractCegarLoop]: Abstraction has 2355 states and 4318 transitions. [2021-12-17 18:58:39,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:39,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 4318 transitions. [2021-12-17 18:58:39,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 18:58:39,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:39,990 INFO L514 BasicCegarLoop]: 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] [2021-12-17 18:58:39,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 18:58:39,990 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:39,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:39,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1110439620, now seen corresponding path program 1 times [2021-12-17 18:58:39,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:39,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290362665] [2021-12-17 18:58:39,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:39,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:40,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:40,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 18:58:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:40,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 18:58:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:40,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 18:58:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:40,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 18:58:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:40,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:40,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290362665] [2021-12-17 18:58:40,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290362665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:40,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:40,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:58:40,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659746001] [2021-12-17 18:58:40,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:40,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:58:40,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:40,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:58:40,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:58:40,122 INFO L87 Difference]: Start difference. First operand 2355 states and 4318 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:41,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:41,689 INFO L93 Difference]: Finished difference Result 2966 states and 5298 transitions. [2021-12-17 18:58:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:58:41,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-17 18:58:41,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:41,699 INFO L225 Difference]: With dead ends: 2966 [2021-12-17 18:58:41,699 INFO L226 Difference]: Without dead ends: 2746 [2021-12-17 18:58:41,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:58:41,702 INFO L933 BasicCegarLoop]: 4564 mSDtfsCounter, 4790 mSDsluCounter, 17085 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 21649 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:41,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4803 Valid, 21649 Invalid, 1886 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:58:41,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2021-12-17 18:58:41,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2583. [2021-12-17 18:58:41,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 2528 states have (on average 1.8184335443037976) internal successors, (4597), 2533 states have internal predecessors, (4597), 39 states have call successors, (39), 13 states have call predecessors, (39), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2021-12-17 18:58:41,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 4680 transitions. [2021-12-17 18:58:41,755 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 4680 transitions. Word has length 113 [2021-12-17 18:58:41,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:41,756 INFO L470 AbstractCegarLoop]: Abstraction has 2583 states and 4680 transitions. [2021-12-17 18:58:41,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:41,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 4680 transitions. [2021-12-17 18:58:41,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 18:58:41,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:41,758 INFO L514 BasicCegarLoop]: 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] [2021-12-17 18:58:41,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 18:58:41,758 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:41,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:41,759 INFO L85 PathProgramCache]: Analyzing trace with hash 240945598, now seen corresponding path program 1 times [2021-12-17 18:58:41,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:41,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118106208] [2021-12-17 18:58:41,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:41,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:41,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:41,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 18:58:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:41,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 18:58:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:41,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 18:58:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:41,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 18:58:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:41,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:41,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:41,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118106208] [2021-12-17 18:58:41,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118106208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:41,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:41,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:58:41,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421578858] [2021-12-17 18:58:41,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:41,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:58:41,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:41,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:58:41,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:58:41,854 INFO L87 Difference]: Start difference. First operand 2583 states and 4680 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:43,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:43,516 INFO L93 Difference]: Finished difference Result 3740 states and 6520 transitions. [2021-12-17 18:58:43,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:58:43,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-17 18:58:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:43,529 INFO L225 Difference]: With dead ends: 3740 [2021-12-17 18:58:43,529 INFO L226 Difference]: Without dead ends: 3294 [2021-12-17 18:58:43,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:58:43,533 INFO L933 BasicCegarLoop]: 4511 mSDtfsCounter, 4814 mSDsluCounter, 17006 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4827 SdHoareTripleChecker+Valid, 21517 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:43,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4827 Valid, 21517 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:58:43,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2021-12-17 18:58:43,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3003. [2021-12-17 18:58:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2904 states have (on average 1.7837465564738293) internal successors, (5180), 2911 states have internal predecessors, (5180), 69 states have call successors, (69), 25 states have call predecessors, (69), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2021-12-17 18:58:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 5333 transitions. [2021-12-17 18:58:43,682 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 5333 transitions. Word has length 113 [2021-12-17 18:58:43,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:43,682 INFO L470 AbstractCegarLoop]: Abstraction has 3003 states and 5333 transitions. [2021-12-17 18:58:43,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:43,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 5333 transitions. [2021-12-17 18:58:43,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 18:58:43,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:43,684 INFO L514 BasicCegarLoop]: 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] [2021-12-17 18:58:43,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 18:58:43,685 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:43,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:43,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1378029316, now seen corresponding path program 1 times [2021-12-17 18:58:43,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:43,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248087253] [2021-12-17 18:58:43,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:43,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:43,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:43,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 18:58:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:43,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 18:58:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:43,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 18:58:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 18:58:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:43,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:43,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248087253] [2021-12-17 18:58:43,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248087253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:43,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:43,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:58:43,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408174658] [2021-12-17 18:58:43,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:43,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:58:43,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:43,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:58:43,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:58:43,805 INFO L87 Difference]: Start difference. First operand 3003 states and 5333 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:45,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:45,207 INFO L93 Difference]: Finished difference Result 5254 states and 8905 transitions. [2021-12-17 18:58:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:58:45,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-17 18:58:45,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:45,224 INFO L225 Difference]: With dead ends: 5254 [2021-12-17 18:58:45,226 INFO L226 Difference]: Without dead ends: 4388 [2021-12-17 18:58:45,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:58:45,238 INFO L933 BasicCegarLoop]: 4555 mSDtfsCounter, 4789 mSDsluCounter, 17077 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21632 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:45,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 21632 Invalid, 1893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:58:45,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2021-12-17 18:58:45,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 3845. [2021-12-17 18:58:45,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3658 states have (on average 1.7353745215965009) internal successors, (6348), 3669 states have internal predecessors, (6348), 129 states have call successors, (129), 49 states have call predecessors, (129), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-12-17 18:58:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 6647 transitions. [2021-12-17 18:58:45,364 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 6647 transitions. Word has length 113 [2021-12-17 18:58:45,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:45,364 INFO L470 AbstractCegarLoop]: Abstraction has 3845 states and 6647 transitions. [2021-12-17 18:58:45,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 6647 transitions. [2021-12-17 18:58:45,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 18:58:45,367 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:45,367 INFO L514 BasicCegarLoop]: 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] [2021-12-17 18:58:45,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 18:58:45,367 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:45,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:45,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2033428990, now seen corresponding path program 1 times [2021-12-17 18:58:45,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:45,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427023831] [2021-12-17 18:58:45,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:45,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:45,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:45,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 18:58:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:45,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 18:58:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:45,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 18:58:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:45,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 18:58:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:45,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:45,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:45,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427023831] [2021-12-17 18:58:45,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427023831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:45,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:45,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:58:45,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617412124] [2021-12-17 18:58:45,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:45,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:58:45,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:45,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:58:45,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:58:45,437 INFO L87 Difference]: Start difference. First operand 3845 states and 6647 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:47,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:47,018 INFO L93 Difference]: Finished difference Result 8280 states and 13689 transitions. [2021-12-17 18:58:47,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:58:47,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-17 18:58:47,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:47,052 INFO L225 Difference]: With dead ends: 8280 [2021-12-17 18:58:47,053 INFO L226 Difference]: Without dead ends: 6572 [2021-12-17 18:58:47,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:58:47,063 INFO L933 BasicCegarLoop]: 4552 mSDtfsCounter, 4789 mSDsluCounter, 17077 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21629 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:47,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 21629 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1811 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:58:47,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2021-12-17 18:58:47,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 5535. [2021-12-17 18:58:47,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5535 states, 5172 states have (on average 1.6805877803557618) internal successors, (8692), 5191 states have internal predecessors, (8692), 249 states have call successors, (249), 97 states have call predecessors, (249), 112 states have return successors, (360), 262 states have call predecessors, (360), 247 states have call successors, (360) [2021-12-17 18:58:47,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 9301 transitions. [2021-12-17 18:58:47,275 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 9301 transitions. Word has length 113 [2021-12-17 18:58:47,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:47,275 INFO L470 AbstractCegarLoop]: Abstraction has 5535 states and 9301 transitions. [2021-12-17 18:58:47,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:47,276 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 9301 transitions. [2021-12-17 18:58:47,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 18:58:47,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:47,280 INFO L514 BasicCegarLoop]: 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] [2021-12-17 18:58:47,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 18:58:47,280 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:47,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:47,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2004928700, now seen corresponding path program 1 times [2021-12-17 18:58:47,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:47,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228586811] [2021-12-17 18:58:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:47,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:47,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:47,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 18:58:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:47,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 18:58:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:47,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 18:58:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:47,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 18:58:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:47,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:47,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228586811] [2021-12-17 18:58:47,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228586811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:47,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:47,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:58:47,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075263963] [2021-12-17 18:58:47,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:47,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:58:47,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:47,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:58:47,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:58:47,389 INFO L87 Difference]: Start difference. First operand 5535 states and 9301 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:49,065 INFO L93 Difference]: Finished difference Result 14330 states and 23313 transitions. [2021-12-17 18:58:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:58:49,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-17 18:58:49,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:49,115 INFO L225 Difference]: With dead ends: 14330 [2021-12-17 18:58:49,116 INFO L226 Difference]: Without dead ends: 10932 [2021-12-17 18:58:49,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:58:49,132 INFO L933 BasicCegarLoop]: 4549 mSDtfsCounter, 4789 mSDsluCounter, 17077 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21626 SdHoareTripleChecker+Invalid, 1881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:49,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 21626 Invalid, 1881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:58:49,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10932 states. [2021-12-17 18:58:49,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10932 to 8929. [2021-12-17 18:58:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8929 states, 8214 states have (on average 1.6313610908205503) internal successors, (13400), 8249 states have internal predecessors, (13400), 489 states have call successors, (489), 193 states have call predecessors, (489), 224 states have return successors, (794), 518 states have call predecessors, (794), 487 states have call successors, (794) [2021-12-17 18:58:49,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8929 states to 8929 states and 14683 transitions. [2021-12-17 18:58:49,466 INFO L78 Accepts]: Start accepts. Automaton has 8929 states and 14683 transitions. Word has length 113 [2021-12-17 18:58:49,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:49,466 INFO L470 AbstractCegarLoop]: Abstraction has 8929 states and 14683 transitions. [2021-12-17 18:58:49,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:49,467 INFO L276 IsEmpty]: Start isEmpty. Operand 8929 states and 14683 transitions. [2021-12-17 18:58:49,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 18:58:49,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:49,472 INFO L514 BasicCegarLoop]: 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] [2021-12-17 18:58:49,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 18:58:49,473 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:49,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:49,475 INFO L85 PathProgramCache]: Analyzing trace with hash 64346686, now seen corresponding path program 1 times [2021-12-17 18:58:49,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:49,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969401238] [2021-12-17 18:58:49,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:49,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:49,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:49,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 18:58:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:49,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 18:58:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:49,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 18:58:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:49,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 18:58:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:49,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:49,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:49,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969401238] [2021-12-17 18:58:49,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969401238] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:49,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:49,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:58:49,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690882370] [2021-12-17 18:58:49,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:49,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:58:49,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:49,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:58:49,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:58:49,564 INFO L87 Difference]: Start difference. First operand 8929 states and 14683 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:51,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:51,348 INFO L93 Difference]: Finished difference Result 26428 states and 42749 transitions. [2021-12-17 18:58:51,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:58:51,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-17 18:58:51,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:51,430 INFO L225 Difference]: With dead ends: 26428 [2021-12-17 18:58:51,430 INFO L226 Difference]: Without dead ends: 19636 [2021-12-17 18:58:51,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:58:51,452 INFO L933 BasicCegarLoop]: 4546 mSDtfsCounter, 4789 mSDsluCounter, 17077 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21623 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:51,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 21623 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:58:51,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19636 states. [2021-12-17 18:58:51,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19636 to 15747. [2021-12-17 18:58:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 14328 states have (on average 1.5954773869346734) internal successors, (22860), 14395 states have internal predecessors, (22860), 969 states have call successors, (969), 385 states have call predecessors, (969), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2021-12-17 18:58:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 25653 transitions. [2021-12-17 18:58:51,940 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 25653 transitions. Word has length 113 [2021-12-17 18:58:51,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:51,940 INFO L470 AbstractCegarLoop]: Abstraction has 15747 states and 25653 transitions. [2021-12-17 18:58:51,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:51,942 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 25653 transitions. [2021-12-17 18:58:51,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 18:58:51,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:51,952 INFO L514 BasicCegarLoop]: 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] [2021-12-17 18:58:51,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 18:58:51,952 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:51,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:51,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1941409916, now seen corresponding path program 1 times [2021-12-17 18:58:51,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:51,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209109434] [2021-12-17 18:58:51,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:51,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:51,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:52,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 18:58:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:52,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 18:58:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:52,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 18:58:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:52,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 18:58:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:52,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:52,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209109434] [2021-12-17 18:58:52,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209109434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:52,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:52,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:58:52,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713893489] [2021-12-17 18:58:52,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:52,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:58:52,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:52,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:58:52,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:58:52,044 INFO L87 Difference]: Start difference. First operand 15747 states and 25653 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:53,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:53,404 INFO L93 Difference]: Finished difference Result 33453 states and 54776 transitions. [2021-12-17 18:58:53,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:58:53,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-17 18:58:53,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:53,462 INFO L225 Difference]: With dead ends: 33453 [2021-12-17 18:58:53,462 INFO L226 Difference]: Without dead ends: 19841 [2021-12-17 18:58:53,497 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:58:53,498 INFO L933 BasicCegarLoop]: 4316 mSDtfsCounter, 4600 mSDsluCounter, 16414 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4614 SdHoareTripleChecker+Valid, 20730 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:53,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4614 Valid, 20730 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 18:58:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19841 states. [2021-12-17 18:58:53,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19841 to 15747. [2021-12-17 18:58:53,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 14328 states have (on average 1.5909408151870463) internal successors, (22795), 14395 states have internal predecessors, (22795), 969 states have call successors, (969), 385 states have call predecessors, (969), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2021-12-17 18:58:53,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 25588 transitions. [2021-12-17 18:58:53,980 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 25588 transitions. Word has length 113 [2021-12-17 18:58:53,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:53,981 INFO L470 AbstractCegarLoop]: Abstraction has 15747 states and 25588 transitions. [2021-12-17 18:58:53,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:53,981 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 25588 transitions. [2021-12-17 18:58:53,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 18:58:53,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:53,990 INFO L514 BasicCegarLoop]: 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] [2021-12-17 18:58:53,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 18:58:53,990 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:53,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1170676350, now seen corresponding path program 1 times [2021-12-17 18:58:53,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:53,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26174376] [2021-12-17 18:58:53,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:53,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:54,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:54,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 18:58:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:54,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 18:58:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:54,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 18:58:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:54,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 18:58:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:54,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:54,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26174376] [2021-12-17 18:58:54,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26174376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:54,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:54,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:58:54,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123591477] [2021-12-17 18:58:54,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:54,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:58:54,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:54,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:58:54,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:58:54,090 INFO L87 Difference]: Start difference. First operand 15747 states and 25588 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:55,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:55,310 INFO L93 Difference]: Finished difference Result 33326 states and 54329 transitions. [2021-12-17 18:58:55,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:58:55,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-17 18:58:55,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:55,369 INFO L225 Difference]: With dead ends: 33326 [2021-12-17 18:58:55,369 INFO L226 Difference]: Without dead ends: 19714 [2021-12-17 18:58:55,402 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:58:55,405 INFO L933 BasicCegarLoop]: 4310 mSDtfsCounter, 4597 mSDsluCounter, 16414 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4611 SdHoareTripleChecker+Valid, 20724 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:55,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4611 Valid, 20724 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 18:58:55,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19714 states. [2021-12-17 18:58:55,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19714 to 15747. [2021-12-17 18:58:55,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 14328 states have (on average 1.5864042434394192) internal successors, (22730), 14395 states have internal predecessors, (22730), 969 states have call successors, (969), 385 states have call predecessors, (969), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2021-12-17 18:58:56,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 25523 transitions. [2021-12-17 18:58:56,044 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 25523 transitions. Word has length 113 [2021-12-17 18:58:56,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:56,045 INFO L470 AbstractCegarLoop]: Abstraction has 15747 states and 25523 transitions. [2021-12-17 18:58:56,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:56,045 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 25523 transitions. [2021-12-17 18:58:56,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 18:58:56,056 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:56,056 INFO L514 BasicCegarLoop]: 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] [2021-12-17 18:58:56,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 18:58:56,056 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:56,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:56,059 INFO L85 PathProgramCache]: Analyzing trace with hash 584400128, now seen corresponding path program 1 times [2021-12-17 18:58:56,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:56,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324457481] [2021-12-17 18:58:56,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:56,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:56,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:56,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 18:58:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:56,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 18:58:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:56,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 18:58:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:56,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 18:58:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:56,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:56,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:56,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324457481] [2021-12-17 18:58:56,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324457481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:56,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:56,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:58:56,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479645222] [2021-12-17 18:58:56,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:56,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:58:56,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:56,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:58:56,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:58:56,155 INFO L87 Difference]: Start difference. First operand 15747 states and 25523 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:58,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:58,629 INFO L93 Difference]: Finished difference Result 53887 states and 86573 transitions. [2021-12-17 18:58:58,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:58:58,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-17 18:58:58,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:58,749 INFO L225 Difference]: With dead ends: 53887 [2021-12-17 18:58:58,749 INFO L226 Difference]: Without dead ends: 40277 [2021-12-17 18:58:58,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 18:58:58,789 INFO L933 BasicCegarLoop]: 4492 mSDtfsCounter, 4943 mSDsluCounter, 17001 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4963 SdHoareTripleChecker+Valid, 21493 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:58,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4963 Valid, 21493 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:58:58,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40277 states. [2021-12-17 18:58:59,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40277 to 29444. [2021-12-17 18:58:59,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29444 states, 26681 states have (on average 1.5644466099471535) internal successors, (41741), 26812 states have internal predecessors, (41741), 1865 states have call successors, (1865), 769 states have call predecessors, (1865), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2021-12-17 18:59:00,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29444 states to 29444 states and 47912 transitions. [2021-12-17 18:59:00,028 INFO L78 Accepts]: Start accepts. Automaton has 29444 states and 47912 transitions. Word has length 113 [2021-12-17 18:59:00,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:00,028 INFO L470 AbstractCegarLoop]: Abstraction has 29444 states and 47912 transitions. [2021-12-17 18:59:00,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:59:00,029 INFO L276 IsEmpty]: Start isEmpty. Operand 29444 states and 47912 transitions. [2021-12-17 18:59:00,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 18:59:00,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:00,068 INFO L514 BasicCegarLoop]: 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] [2021-12-17 18:59:00,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 18:59:00,068 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:00,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:00,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1374174658, now seen corresponding path program 1 times [2021-12-17 18:59:00,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:00,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539800344] [2021-12-17 18:59:00,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:00,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:00,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:00,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 18:59:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:00,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 18:59:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:00,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 18:59:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:00,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 18:59:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:00,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:00,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539800344] [2021-12-17 18:59:00,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539800344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:00,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:00,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:00,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465558725] [2021-12-17 18:59:00,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:00,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:00,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:00,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:00,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:00,213 INFO L87 Difference]: Start difference. First operand 29444 states and 47912 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:59:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:01,959 INFO L93 Difference]: Finished difference Result 64112 states and 105619 transitions. [2021-12-17 18:59:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:59:01,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-17 18:59:01,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:02,089 INFO L225 Difference]: With dead ends: 64112 [2021-12-17 18:59:02,089 INFO L226 Difference]: Without dead ends: 36803 [2021-12-17 18:59:02,148 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:59:02,149 INFO L933 BasicCegarLoop]: 4303 mSDtfsCounter, 4690 mSDsluCounter, 12331 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4704 SdHoareTripleChecker+Valid, 16634 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:02,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4704 Valid, 16634 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 18:59:02,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36803 states. [2021-12-17 18:59:03,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36803 to 29444. [2021-12-17 18:59:03,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29444 states, 26681 states have (on average 1.5596117087065702) internal successors, (41612), 26812 states have internal predecessors, (41612), 1865 states have call successors, (1865), 769 states have call predecessors, (1865), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2021-12-17 18:59:03,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29444 states to 29444 states and 47783 transitions. [2021-12-17 18:59:03,578 INFO L78 Accepts]: Start accepts. Automaton has 29444 states and 47783 transitions. Word has length 113 [2021-12-17 18:59:03,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:03,578 INFO L470 AbstractCegarLoop]: Abstraction has 29444 states and 47783 transitions. [2021-12-17 18:59:03,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:59:03,578 INFO L276 IsEmpty]: Start isEmpty. Operand 29444 states and 47783 transitions. [2021-12-17 18:59:03,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 18:59:03,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:03,594 INFO L514 BasicCegarLoop]: 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] [2021-12-17 18:59:03,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 18:59:03,594 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:03,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:03,595 INFO L85 PathProgramCache]: Analyzing trace with hash 502308160, now seen corresponding path program 1 times [2021-12-17 18:59:03,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:03,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451143417] [2021-12-17 18:59:03,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:03,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:03,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 18:59:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:03,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 18:59:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:03,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 18:59:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:03,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 18:59:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:03,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:03,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:03,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451143417] [2021-12-17 18:59:03,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451143417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:03,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:03,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:03,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497101138] [2021-12-17 18:59:03,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:03,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:03,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:03,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:03,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:03,669 INFO L87 Difference]: Start difference. First operand 29444 states and 47783 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:59:05,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:05,815 INFO L93 Difference]: Finished difference Result 63984 states and 104977 transitions. [2021-12-17 18:59:05,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:59:05,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-17 18:59:05,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:05,931 INFO L225 Difference]: With dead ends: 63984 [2021-12-17 18:59:05,931 INFO L226 Difference]: Without dead ends: 36675 [2021-12-17 18:59:05,987 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:59:05,988 INFO L933 BasicCegarLoop]: 4299 mSDtfsCounter, 4594 mSDsluCounter, 16414 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4608 SdHoareTripleChecker+Valid, 20713 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:05,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4608 Valid, 20713 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 18:59:06,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36675 states. [2021-12-17 18:59:07,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36675 to 29444. [2021-12-17 18:59:07,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29444 states, 26681 states have (on average 1.5547768074659871) internal successors, (41483), 26812 states have internal predecessors, (41483), 1865 states have call successors, (1865), 769 states have call predecessors, (1865), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2021-12-17 18:59:07,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29444 states to 29444 states and 47654 transitions. [2021-12-17 18:59:07,302 INFO L78 Accepts]: Start accepts. Automaton has 29444 states and 47654 transitions. Word has length 113 [2021-12-17 18:59:07,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:07,302 INFO L470 AbstractCegarLoop]: Abstraction has 29444 states and 47654 transitions. [2021-12-17 18:59:07,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:59:07,303 INFO L276 IsEmpty]: Start isEmpty. Operand 29444 states and 47654 transitions. [2021-12-17 18:59:07,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 18:59:07,316 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:07,316 INFO L514 BasicCegarLoop]: 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] [2021-12-17 18:59:07,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 18:59:07,317 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:07,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:07,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1376822786, now seen corresponding path program 1 times [2021-12-17 18:59:07,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:07,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217945553] [2021-12-17 18:59:07,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:07,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:07,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:07,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 18:59:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:07,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 18:59:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:07,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 18:59:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:07,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 18:59:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:07,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:07,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217945553] [2021-12-17 18:59:07,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217945553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:07,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:07,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:07,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976343642] [2021-12-17 18:59:07,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:07,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:07,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:07,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:07,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:07,395 INFO L87 Difference]: Start difference. First operand 29444 states and 47654 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:59:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:11,681 INFO L93 Difference]: Finished difference Result 99522 states and 161466 transitions. [2021-12-17 18:59:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:59:11,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-17 18:59:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:11,929 INFO L225 Difference]: With dead ends: 99522 [2021-12-17 18:59:11,930 INFO L226 Difference]: Without dead ends: 72215 [2021-12-17 18:59:11,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 18:59:11,999 INFO L933 BasicCegarLoop]: 4518 mSDtfsCounter, 4793 mSDsluCounter, 17069 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4805 SdHoareTripleChecker+Valid, 21587 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:11,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4805 Valid, 21587 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1753 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:59:12,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72215 states. [2021-12-17 18:59:14,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72215 to 57030. [2021-12-17 18:59:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57030 states, 51643 states have (on average 1.5407509246170827) internal successors, (79569), 51902 states have internal predecessors, (79569), 3593 states have call successors, (3593), 1537 states have call predecessors, (3593), 1792 states have return successors, (10664), 3846 states have call predecessors, (10664), 3591 states have call successors, (10664) [2021-12-17 18:59:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57030 states to 57030 states and 93826 transitions. [2021-12-17 18:59:14,696 INFO L78 Accepts]: Start accepts. Automaton has 57030 states and 93826 transitions. Word has length 113 [2021-12-17 18:59:14,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:14,697 INFO L470 AbstractCegarLoop]: Abstraction has 57030 states and 93826 transitions. [2021-12-17 18:59:14,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:59:14,698 INFO L276 IsEmpty]: Start isEmpty. Operand 57030 states and 93826 transitions. [2021-12-17 18:59:14,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 18:59:14,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:14,732 INFO L514 BasicCegarLoop]: 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] [2021-12-17 18:59:14,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 18:59:14,732 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:14,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:14,733 INFO L85 PathProgramCache]: Analyzing trace with hash -51966592, now seen corresponding path program 1 times [2021-12-17 18:59:14,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:14,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506661704] [2021-12-17 18:59:14,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:14,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:14,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:14,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 18:59:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:14,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 18:59:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:14,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 18:59:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:14,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 18:59:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:14,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:14,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506661704] [2021-12-17 18:59:14,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506661704] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:14,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:14,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 18:59:14,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825637306] [2021-12-17 18:59:14,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:14,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 18:59:14,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:14,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 18:59:14,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 18:59:14,817 INFO L87 Difference]: Start difference. First operand 57030 states and 93826 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:59:21,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:21,381 INFO L93 Difference]: Finished difference Result 190488 states and 309856 transitions. [2021-12-17 18:59:21,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 18:59:21,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2021-12-17 18:59:21,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:22,035 INFO L225 Difference]: With dead ends: 190488 [2021-12-17 18:59:22,036 INFO L226 Difference]: Without dead ends: 135595 [2021-12-17 18:59:22,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 18:59:22,167 INFO L933 BasicCegarLoop]: 4660 mSDtfsCounter, 5058 mSDsluCounter, 12634 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5091 SdHoareTripleChecker+Valid, 17294 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:22,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5091 Valid, 17294 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:59:22,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135595 states.