./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_label42+token_ring.10.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 fe770310c82cf9cfe74a9cf613e502cabffaf8c78b339172b16bd6473cdffdfc --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:52:20,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:52:20,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:52:20,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:52:20,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:52:20,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:52:20,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:52:20,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:52:20,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:52:20,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:52:20,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:52:20,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:52:20,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:52:20,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:52:20,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:52:20,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:52:20,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:52:20,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:52:20,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:52:20,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:52:20,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:52:20,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:52:20,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:52:20,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:52:20,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:52:20,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:52:20,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:52:20,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:52:20,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:52:20,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:52:20,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:52:20,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:52:20,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:52:20,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:52:20,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:52:20,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:52:20,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:52:20,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:52:20,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:52:20,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:52:20,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:52:20,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:52:20,946 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:52:20,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:52:20,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:52:20,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:52:20,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:52:20,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:52:20,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:52:20,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:52:20,950 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:52:20,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:52:20,951 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:52:20,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:52:20,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:52:20,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:52:20,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:52:20,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:52:20,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:52:20,952 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:52:20,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:52:20,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:52:20,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:52:20,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:52:20,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:52:20,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:52:20,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:52:20,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:52:20,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:52:20,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:52:20,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:52:20,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:52:20,954 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:52:20,954 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:52:20,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:52:20,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe770310c82cf9cfe74a9cf613e502cabffaf8c78b339172b16bd6473cdffdfc [2021-12-28 01:52:21,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:52:21,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:52:21,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:52:21,269 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:52:21,271 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:52:21,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-1.c [2021-12-28 01:52:21,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fa2d2a7c/5e812dc367b844a88f7e7a3863f7299e/FLAGe181e44fe [2021-12-28 01:52:22,087 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:52:22,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-1.c [2021-12-28 01:52:22,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fa2d2a7c/5e812dc367b844a88f7e7a3863f7299e/FLAGe181e44fe [2021-12-28 01:52:22,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fa2d2a7c/5e812dc367b844a88f7e7a3863f7299e [2021-12-28 01:52:22,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:52:22,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:52:22,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:52:22,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:52:22,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:52:22,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:52:22" (1/1) ... [2021-12-28 01:52:22,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d20546a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:22, skipping insertion in model container [2021-12-28 01:52:22,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:52:22" (1/1) ... [2021-12-28 01:52:22,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:52:22,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:52:23,812 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_label42+token_ring.10.cil-1.c[378560,378573] [2021-12-28 01:52:23,836 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_label42+token_ring.10.cil-1.c[383339,383352] [2021-12-28 01:52:24,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:52:24,034 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:52:24,569 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_label42+token_ring.10.cil-1.c[378560,378573] [2021-12-28 01:52:24,586 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_label42+token_ring.10.cil-1.c[383339,383352] [2021-12-28 01:52:24,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:52:24,637 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:52:24,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:24 WrapperNode [2021-12-28 01:52:24,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:52:24,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:52:24,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:52:24,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:52:24,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:24" (1/1) ... [2021-12-28 01:52:24,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:24" (1/1) ... [2021-12-28 01:52:25,034 INFO L137 Inliner]: procedures = 64, calls = 72, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 13088 [2021-12-28 01:52:25,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:52:25,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:52:25,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:52:25,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:52:25,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:24" (1/1) ... [2021-12-28 01:52:25,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:24" (1/1) ... [2021-12-28 01:52:25,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:24" (1/1) ... [2021-12-28 01:52:25,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:24" (1/1) ... [2021-12-28 01:52:25,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:24" (1/1) ... [2021-12-28 01:52:25,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:24" (1/1) ... [2021-12-28 01:52:25,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:24" (1/1) ... [2021-12-28 01:52:25,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:52:25,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:52:25,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:52:25,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:52:25,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:24" (1/1) ... [2021-12-28 01:52:25,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:52:25,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:52:25,661 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) [2021-12-28 01:52:25,735 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 [2021-12-28 01:52:25,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:52:25,756 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-28 01:52:25,756 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-28 01:52:25,756 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-28 01:52:25,757 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-28 01:52:25,757 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-28 01:52:25,757 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-28 01:52:25,757 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-28 01:52:25,757 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-28 01:52:25,757 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-28 01:52:25,757 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-28 01:52:25,757 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-28 01:52:25,757 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-28 01:52:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-28 01:52:25,758 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-28 01:52:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:52:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:52:25,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:52:25,903 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:52:25,905 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:52:30,846 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:52:30,867 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:52:30,867 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-28 01:52:30,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:52:30 BoogieIcfgContainer [2021-12-28 01:52:30,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:52:30,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:52:30,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:52:30,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:52:30,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:52:22" (1/3) ... [2021-12-28 01:52:30,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5317342c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:52:30, skipping insertion in model container [2021-12-28 01:52:30,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:52:24" (2/3) ... [2021-12-28 01:52:30,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5317342c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:52:30, skipping insertion in model container [2021-12-28 01:52:30,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:52:30" (3/3) ... [2021-12-28 01:52:30,875 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.10.cil-1.c [2021-12-28 01:52:30,878 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:52:30,878 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 01:52:30,914 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:52:30,918 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 [2021-12-28 01:52:30,919 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 01:52:30,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 2523 states, 2487 states have (on average 1.845999195818255) internal successors, (4591), 2492 states have internal predecessors, (4591), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-28 01:52:30,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:52:30,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:30,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:30,963 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:30,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:30,967 INFO L85 PathProgramCache]: Analyzing trace with hash -289990772, now seen corresponding path program 1 times [2021-12-28 01:52:30,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:30,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654769930] [2021-12-28 01:52:30,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:30,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:52:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:52:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:52:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:52:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:31,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:31,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654769930] [2021-12-28 01:52:31,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654769930] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:31,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:31,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:52:31,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212097858] [2021-12-28 01:52:31,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:31,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:52:31,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:31,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:52:31,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:52:31,380 INFO L87 Difference]: Start difference. First operand has 2523 states, 2487 states have (on average 1.845999195818255) internal successors, (4591), 2492 states have internal predecessors, (4591), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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) [2021-12-28 01:52:32,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:32,822 INFO L93 Difference]: Finished difference Result 5155 states and 9474 transitions. [2021-12-28 01:52:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 01:52:32,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 157 [2021-12-28 01:52:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:32,849 INFO L225 Difference]: With dead ends: 5155 [2021-12-28 01:52:32,850 INFO L226 Difference]: Without dead ends: 2575 [2021-12-28 01:52:32,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 01:52:32,863 INFO L933 BasicCegarLoop]: 4601 mSDtfsCounter, 896 mSDsluCounter, 12431 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 17032 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:32,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 17032 Invalid, 678 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 01:52:32,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2021-12-28 01:52:32,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2455. [2021-12-28 01:52:32,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.8306484923585296) internal successors, (4432), 2424 states have internal predecessors, (4432), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-28 01:52:32,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4482 transitions. [2021-12-28 01:52:32,977 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4482 transitions. Word has length 157 [2021-12-28 01:52:32,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:32,978 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 4482 transitions. [2021-12-28 01:52:32,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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) [2021-12-28 01:52:32,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4482 transitions. [2021-12-28 01:52:32,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:52:32,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:32,981 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:32,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:52:32,982 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:32,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:32,983 INFO L85 PathProgramCache]: Analyzing trace with hash -628278322, now seen corresponding path program 1 times [2021-12-28 01:52:32,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:32,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581463438] [2021-12-28 01:52:32,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:32,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:33,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:33,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:52:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:33,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:52:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:33,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:52:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:33,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:52:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:33,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:33,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:33,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581463438] [2021-12-28 01:52:33,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581463438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:33,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:33,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:33,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45422239] [2021-12-28 01:52:33,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:33,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:33,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:33,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:33,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:33,172 INFO L87 Difference]: Start difference. First operand 2455 states and 4482 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:52:35,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:35,949 INFO L93 Difference]: Finished difference Result 3362 states and 5958 transitions. [2021-12-28 01:52:35,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:35,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2021-12-28 01:52:35,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:35,960 INFO L225 Difference]: With dead ends: 3362 [2021-12-28 01:52:35,961 INFO L226 Difference]: Without dead ends: 3046 [2021-12-28 01:52:35,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:52:35,963 INFO L933 BasicCegarLoop]: 4852 mSDtfsCounter, 5234 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2817 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5251 SdHoareTripleChecker+Valid, 22385 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:35,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5251 Valid, 22385 Invalid, 2898 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 2817 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-28 01:52:35,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2021-12-28 01:52:36,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 2787. [2021-12-28 01:52:36,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2724 states have (on average 1.8050660792951543) internal successors, (4917), 2729 states have internal predecessors, (4917), 47 states have call successors, (47), 13 states have call predecessors, (47), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2021-12-28 01:52:36,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 5016 transitions. [2021-12-28 01:52:36,040 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 5016 transitions. Word has length 157 [2021-12-28 01:52:36,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:36,041 INFO L470 AbstractCegarLoop]: Abstraction has 2787 states and 5016 transitions. [2021-12-28 01:52:36,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:52:36,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 5016 transitions. [2021-12-28 01:52:36,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:52:36,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:36,046 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:36,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:52:36,047 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:36,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:36,047 INFO L85 PathProgramCache]: Analyzing trace with hash 770675280, now seen corresponding path program 1 times [2021-12-28 01:52:36,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:36,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323164513] [2021-12-28 01:52:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:36,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:52:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:52:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:52:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:52:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:36,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:36,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323164513] [2021-12-28 01:52:36,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323164513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:36,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:36,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:36,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624119079] [2021-12-28 01:52:36,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:36,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:36,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:36,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:36,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:36,188 INFO L87 Difference]: Start difference. First operand 2787 states and 5016 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:52:38,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:38,827 INFO L93 Difference]: Finished difference Result 4512 states and 7800 transitions. [2021-12-28 01:52:38,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:38,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2021-12-28 01:52:38,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:38,838 INFO L225 Difference]: With dead ends: 4512 [2021-12-28 01:52:38,838 INFO L226 Difference]: Without dead ends: 3866 [2021-12-28 01:52:38,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:52:38,840 INFO L933 BasicCegarLoop]: 4779 mSDtfsCounter, 5274 mSDsluCounter, 17458 mSDsCounter, 0 mSdLazyCounter, 2669 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5291 SdHoareTripleChecker+Valid, 22237 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:38,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5291 Valid, 22237 Invalid, 2757 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 2669 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-28 01:52:38,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2021-12-28 01:52:38,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3399. [2021-12-28 01:52:38,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3399 states, 3284 states have (on average 1.7649208282582216) internal successors, (5796), 3291 states have internal predecessors, (5796), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2021-12-28 01:52:38,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3399 states to 3399 states and 5981 transitions. [2021-12-28 01:52:38,929 INFO L78 Accepts]: Start accepts. Automaton has 3399 states and 5981 transitions. Word has length 157 [2021-12-28 01:52:38,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:38,930 INFO L470 AbstractCegarLoop]: Abstraction has 3399 states and 5981 transitions. [2021-12-28 01:52:38,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:52:38,930 INFO L276 IsEmpty]: Start isEmpty. Operand 3399 states and 5981 transitions. [2021-12-28 01:52:38,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:52:38,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:38,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:38,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:52:38,932 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:38,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:38,933 INFO L85 PathProgramCache]: Analyzing trace with hash -846765170, now seen corresponding path program 1 times [2021-12-28 01:52:38,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:38,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421066552] [2021-12-28 01:52:38,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:38,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:38,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:38,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:52:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:39,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:52:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:39,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:52:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:39,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:52:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:39,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:39,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:39,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421066552] [2021-12-28 01:52:39,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421066552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:39,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:39,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:39,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023008119] [2021-12-28 01:52:39,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:39,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:39,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:39,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:39,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:39,059 INFO L87 Difference]: Start difference. First operand 3399 states and 5981 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:52:41,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:41,430 INFO L93 Difference]: Finished difference Result 6762 states and 11393 transitions. [2021-12-28 01:52:41,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:41,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2021-12-28 01:52:41,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:41,497 INFO L225 Difference]: With dead ends: 6762 [2021-12-28 01:52:41,508 INFO L226 Difference]: Without dead ends: 5504 [2021-12-28 01:52:41,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:52:41,542 INFO L933 BasicCegarLoop]: 4843 mSDtfsCounter, 5233 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22376 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:41,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5250 Valid, 22376 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2813 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-28 01:52:41,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2021-12-28 01:52:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 4625. [2021-12-28 01:52:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4625 states, 4406 states have (on average 1.7149341806627327) internal successors, (7556), 4417 states have internal predecessors, (7556), 161 states have call successors, (161), 49 states have call predecessors, (161), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2021-12-28 01:52:42,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 7919 transitions. [2021-12-28 01:52:42,008 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 7919 transitions. Word has length 157 [2021-12-28 01:52:42,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:42,008 INFO L470 AbstractCegarLoop]: Abstraction has 4625 states and 7919 transitions. [2021-12-28 01:52:42,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:52:42,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 7919 transitions. [2021-12-28 01:52:42,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:52:42,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:42,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:42,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:52:42,022 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:42,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:42,023 INFO L85 PathProgramCache]: Analyzing trace with hash -483298672, now seen corresponding path program 1 times [2021-12-28 01:52:42,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:42,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593492564] [2021-12-28 01:52:42,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:42,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:42,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:42,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:52:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:42,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:52:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:42,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:52:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:42,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:52:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:42,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:42,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593492564] [2021-12-28 01:52:42,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593492564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:42,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:42,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:42,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411320914] [2021-12-28 01:52:42,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:42,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:42,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:42,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:42,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:42,182 INFO L87 Difference]: Start difference. First operand 4625 states and 7919 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:52:44,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:44,791 INFO L93 Difference]: Finished difference Result 11260 states and 18593 transitions. [2021-12-28 01:52:44,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:44,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2021-12-28 01:52:44,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:44,852 INFO L225 Difference]: With dead ends: 11260 [2021-12-28 01:52:44,852 INFO L226 Difference]: Without dead ends: 8776 [2021-12-28 01:52:44,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:52:44,866 INFO L933 BasicCegarLoop]: 4840 mSDtfsCounter, 5233 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2807 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22373 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:44,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5250 Valid, 22373 Invalid, 2891 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2807 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-28 01:52:44,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8776 states. [2021-12-28 01:52:45,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8776 to 7083. [2021-12-28 01:52:45,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7083 states, 6656 states have (on average 1.6652644230769231) internal successors, (11084), 6675 states have internal predecessors, (11084), 313 states have call successors, (313), 97 states have call predecessors, (313), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2021-12-28 01:52:45,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7083 states to 7083 states and 11821 transitions. [2021-12-28 01:52:45,321 INFO L78 Accepts]: Start accepts. Automaton has 7083 states and 11821 transitions. Word has length 157 [2021-12-28 01:52:45,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:45,322 INFO L470 AbstractCegarLoop]: Abstraction has 7083 states and 11821 transitions. [2021-12-28 01:52:45,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:52:45,323 INFO L276 IsEmpty]: Start isEmpty. Operand 7083 states and 11821 transitions. [2021-12-28 01:52:45,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:52:45,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:45,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:45,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:52:45,329 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:45,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:45,329 INFO L85 PathProgramCache]: Analyzing trace with hash -194479282, now seen corresponding path program 1 times [2021-12-28 01:52:45,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:45,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818789275] [2021-12-28 01:52:45,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:45,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:45,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:45,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:52:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:45,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:52:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:45,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:52:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:45,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:52:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:45,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:45,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818789275] [2021-12-28 01:52:45,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818789275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:45,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:45,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:45,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531296780] [2021-12-28 01:52:45,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:45,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:45,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:45,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:45,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:45,500 INFO L87 Difference]: Start difference. First operand 7083 states and 11821 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:52:48,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:48,105 INFO L93 Difference]: Finished difference Result 20254 states and 33049 transitions. [2021-12-28 01:52:48,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:48,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2021-12-28 01:52:48,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:48,156 INFO L225 Difference]: With dead ends: 20254 [2021-12-28 01:52:48,156 INFO L226 Difference]: Without dead ends: 15312 [2021-12-28 01:52:48,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:52:48,179 INFO L933 BasicCegarLoop]: 4837 mSDtfsCounter, 5233 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2801 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22370 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:48,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5250 Valid, 22370 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2801 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 01:52:48,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15312 states. [2021-12-28 01:52:48,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15312 to 12013. [2021-12-28 01:52:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12013 states, 11170 states have (on average 1.6257833482542525) internal successors, (18160), 11205 states have internal predecessors, (18160), 617 states have call successors, (617), 193 states have call predecessors, (617), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2021-12-28 01:52:48,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12013 states to 12013 states and 19699 transitions. [2021-12-28 01:52:48,694 INFO L78 Accepts]: Start accepts. Automaton has 12013 states and 19699 transitions. Word has length 157 [2021-12-28 01:52:48,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:48,695 INFO L470 AbstractCegarLoop]: Abstraction has 12013 states and 19699 transitions. [2021-12-28 01:52:48,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:52:48,695 INFO L276 IsEmpty]: Start isEmpty. Operand 12013 states and 19699 transitions. [2021-12-28 01:52:48,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:52:48,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:48,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:48,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:52:48,702 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:48,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:48,703 INFO L85 PathProgramCache]: Analyzing trace with hash -739351856, now seen corresponding path program 1 times [2021-12-28 01:52:48,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:48,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202433653] [2021-12-28 01:52:48,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:48,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:48,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:52:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:48,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:52:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:52:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:48,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:52:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:48,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:48,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:48,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202433653] [2021-12-28 01:52:48,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202433653] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:48,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:48,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:48,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52925193] [2021-12-28 01:52:48,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:48,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:48,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:48,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:48,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:48,870 INFO L87 Difference]: Start difference. First operand 12013 states and 19699 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:52:52,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:52,369 INFO L93 Difference]: Finished difference Result 38240 states and 62149 transitions. [2021-12-28 01:52:52,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:52:52,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2021-12-28 01:52:52,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:52,451 INFO L225 Difference]: With dead ends: 38240 [2021-12-28 01:52:52,451 INFO L226 Difference]: Without dead ends: 28368 [2021-12-28 01:52:52,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:52:52,486 INFO L933 BasicCegarLoop]: 4834 mSDtfsCounter, 5233 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22367 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:52,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5250 Valid, 22367 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2795 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-28 01:52:52,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28368 states. [2021-12-28 01:52:53,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28368 to 21903. [2021-12-28 01:52:53,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21903 states, 20228 states have (on average 1.5995649594621317) internal successors, (32356), 20295 states have internal predecessors, (32356), 1225 states have call successors, (1225), 385 states have call predecessors, (1225), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2021-12-28 01:52:53,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21903 states to 21903 states and 35661 transitions. [2021-12-28 01:52:53,466 INFO L78 Accepts]: Start accepts. Automaton has 21903 states and 35661 transitions. Word has length 157 [2021-12-28 01:52:53,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:53,466 INFO L470 AbstractCegarLoop]: Abstraction has 21903 states and 35661 transitions. [2021-12-28 01:52:53,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:52:53,467 INFO L276 IsEmpty]: Start isEmpty. Operand 21903 states and 35661 transitions. [2021-12-28 01:52:53,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:52:53,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:53,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:53,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:52:53,479 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:53,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:53,479 INFO L85 PathProgramCache]: Analyzing trace with hash -64191730, now seen corresponding path program 1 times [2021-12-28 01:52:53,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:53,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999344191] [2021-12-28 01:52:53,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:53,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:53,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:53,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:52:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:53,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:52:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:53,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:52:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:53,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:52:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:53,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:53,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999344191] [2021-12-28 01:52:53,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999344191] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:53,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:53,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:53,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991422587] [2021-12-28 01:52:53,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:53,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:53,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:53,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:53,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:53,593 INFO L87 Difference]: Start difference. First operand 21903 states and 35661 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:52:56,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:52:56,149 INFO L93 Difference]: Finished difference Result 48585 states and 79664 transitions. [2021-12-28 01:52:56,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 01:52:56,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2021-12-28 01:52:56,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:52:56,237 INFO L225 Difference]: With dead ends: 48585 [2021-12-28 01:52:56,237 INFO L226 Difference]: Without dead ends: 28821 [2021-12-28 01:52:56,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-28 01:52:56,295 INFO L933 BasicCegarLoop]: 4508 mSDtfsCounter, 5073 mSDsluCounter, 12536 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5091 SdHoareTripleChecker+Valid, 17044 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 01:52:56,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5091 Valid, 17044 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 01:52:56,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28821 states. [2021-12-28 01:52:57,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28821 to 21903. [2021-12-28 01:52:57,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21903 states, 20228 states have (on average 1.5963515918528772) internal successors, (32291), 20295 states have internal predecessors, (32291), 1225 states have call successors, (1225), 385 states have call predecessors, (1225), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2021-12-28 01:52:57,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21903 states to 21903 states and 35596 transitions. [2021-12-28 01:52:57,581 INFO L78 Accepts]: Start accepts. Automaton has 21903 states and 35596 transitions. Word has length 157 [2021-12-28 01:52:57,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:52:57,581 INFO L470 AbstractCegarLoop]: Abstraction has 21903 states and 35596 transitions. [2021-12-28 01:52:57,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:52:57,582 INFO L276 IsEmpty]: Start isEmpty. Operand 21903 states and 35596 transitions. [2021-12-28 01:52:57,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:52:57,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:52:57,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:52:57,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:52:57,597 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:52:57,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:52:57,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1012243696, now seen corresponding path program 1 times [2021-12-28 01:52:57,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:52:57,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707498021] [2021-12-28 01:52:57,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:52:57,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:52:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:57,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:52:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:57,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:52:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:57,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:52:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:57,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:52:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:57,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:52:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:52:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:52:57,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:52:57,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707498021] [2021-12-28 01:52:57,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707498021] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:52:57,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:52:57,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:52:57,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553672096] [2021-12-28 01:52:57,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:52:57,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:52:57,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:52:57,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:52:57,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:52:57,727 INFO L87 Difference]: Start difference. First operand 21903 states and 35596 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:53:03,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:53:03,044 INFO L93 Difference]: Finished difference Result 74083 states and 120373 transitions. [2021-12-28 01:53:03,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:53:03,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2021-12-28 01:53:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:53:03,293 INFO L225 Difference]: With dead ends: 74083 [2021-12-28 01:53:03,293 INFO L226 Difference]: Without dead ends: 54321 [2021-12-28 01:53:03,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:53:03,351 INFO L933 BasicCegarLoop]: 4818 mSDtfsCounter, 5261 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2691 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5278 SdHoareTripleChecker+Valid, 22351 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-28 01:53:03,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5278 Valid, 22351 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2691 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-28 01:53:03,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54321 states. [2021-12-28 01:53:05,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54321 to 41872. [2021-12-28 01:53:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41872 states, 38533 states have (on average 1.5805154023823735) internal successors, (60902), 38664 states have internal predecessors, (60902), 2441 states have call successors, (2441), 769 states have call predecessors, (2441), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2021-12-28 01:53:06,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41872 states to 41872 states and 68225 transitions. [2021-12-28 01:53:06,129 INFO L78 Accepts]: Start accepts. Automaton has 41872 states and 68225 transitions. Word has length 157 [2021-12-28 01:53:06,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:53:06,129 INFO L470 AbstractCegarLoop]: Abstraction has 41872 states and 68225 transitions. [2021-12-28 01:53:06,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:53:06,129 INFO L276 IsEmpty]: Start isEmpty. Operand 41872 states and 68225 transitions. [2021-12-28 01:53:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:53:06,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:53:06,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:53:06,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:53:06,150 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:53:06,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:53:06,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1446749294, now seen corresponding path program 1 times [2021-12-28 01:53:06,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:53:06,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999560346] [2021-12-28 01:53:06,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:53:06,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:53:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:06,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:53:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:06,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:53:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:06,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:53:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:06,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:53:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:06,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:53:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:53:06,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:53:06,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999560346] [2021-12-28 01:53:06,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999560346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:53:06,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:53:06,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:53:06,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174075540] [2021-12-28 01:53:06,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:53:06,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:53:06,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:53:06,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:53:06,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:53:06,445 INFO L87 Difference]: Start difference. First operand 41872 states and 68225 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:53:15,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:53:15,461 INFO L93 Difference]: Finished difference Result 146022 states and 239430 transitions. [2021-12-28 01:53:15,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:53:15,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2021-12-28 01:53:15,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:53:15,921 INFO L225 Difference]: With dead ends: 146022 [2021-12-28 01:53:15,921 INFO L226 Difference]: Without dead ends: 106291 [2021-12-28 01:53:16,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:53:16,034 INFO L933 BasicCegarLoop]: 4762 mSDtfsCounter, 5287 mSDsluCounter, 17458 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5304 SdHoareTripleChecker+Valid, 22220 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:53:16,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5304 Valid, 22220 Invalid, 2673 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 2581 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-28 01:53:16,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106291 states. [2021-12-28 01:53:21,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106291 to 81938. [2021-12-28 01:53:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81938 states, 75271 states have (on average 1.57186698728594) internal successors, (118316), 75530 states have internal predecessors, (118316), 4873 states have call successors, (4873), 1537 states have call predecessors, (4873), 1792 states have return successors, (11944), 5126 states have call predecessors, (11944), 4871 states have call successors, (11944) [2021-12-28 01:53:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81938 states to 81938 states and 135133 transitions. [2021-12-28 01:53:21,998 INFO L78 Accepts]: Start accepts. Automaton has 81938 states and 135133 transitions. Word has length 157 [2021-12-28 01:53:21,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:53:21,998 INFO L470 AbstractCegarLoop]: Abstraction has 81938 states and 135133 transitions. [2021-12-28 01:53:21,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2021-12-28 01:53:21,999 INFO L276 IsEmpty]: Start isEmpty. Operand 81938 states and 135133 transitions. [2021-12-28 01:53:22,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:53:22,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:53:22,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:53:22,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 01:53:22,084 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:53:22,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:53:22,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1876407600, now seen corresponding path program 1 times [2021-12-28 01:53:22,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:53:22,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685236086] [2021-12-28 01:53:22,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:53:22,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:53:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:22,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:53:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:22,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:53:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:22,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:53:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:22,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:53:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:22,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:53:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:53:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:53:22,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:53:22,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685236086] [2021-12-28 01:53:22,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685236086] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:53:22,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:53:22,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:53:22,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735880514] [2021-12-28 01:53:22,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:53:22,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:53:22,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:53:22,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:53:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:53:22,208 INFO L87 Difference]: Start difference. First operand 81938 states and 135133 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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)