./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 403fd15020889f127d837ab127be00e68706cbd07d6d3bacf6b25555a5c09975 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 19:07:13,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 19:07:13,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 19:07:13,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 19:07:13,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 19:07:13,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 19:07:13,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 19:07:13,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 19:07:13,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 19:07:13,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 19:07:13,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 19:07:13,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 19:07:13,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 19:07:13,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 19:07:13,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 19:07:13,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 19:07:13,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 19:07:13,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 19:07:13,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 19:07:13,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 19:07:13,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 19:07:13,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 19:07:13,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 19:07:13,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 19:07:13,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 19:07:13,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 19:07:13,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 19:07:13,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 19:07:13,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 19:07:13,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 19:07:13,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 19:07:13,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 19:07:13,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 19:07:13,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 19:07:13,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 19:07:13,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 19:07:13,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 19:07:13,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 19:07:13,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 19:07:13,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 19:07:13,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 19:07:13,884 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 19:07:13,910 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 19:07:13,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 19:07:13,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 19:07:13,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 19:07:13,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 19:07:13,915 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 19:07:13,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 19:07:13,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 19:07:13,916 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 19:07:13,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 19:07:13,917 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 19:07:13,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 19:07:13,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 19:07:13,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 19:07:13,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 19:07:13,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 19:07:13,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 19:07:13,918 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 19:07:13,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 19:07:13,918 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 19:07:13,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 19:07:13,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 19:07:13,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 19:07:13,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 19:07:13,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 19:07:13,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 19:07:13,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 19:07:13,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 19:07:13,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 19:07:13,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 19:07:13,920 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 19:07:13,921 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 19:07:13,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 19:07:13,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 19:07:13,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 403fd15020889f127d837ab127be00e68706cbd07d6d3bacf6b25555a5c09975 [2021-12-17 19:07:14,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 19:07:14,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 19:07:14,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 19:07:14,162 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 19:07:14,162 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 19:07:14,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-2.c [2021-12-17 19:07:14,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6210a143/cd20046354ef4894b97ac247d578427c/FLAG77761ae4a [2021-12-17 19:07:15,033 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 19:07:15,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-2.c [2021-12-17 19:07:15,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6210a143/cd20046354ef4894b97ac247d578427c/FLAG77761ae4a [2021-12-17 19:07:15,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6210a143/cd20046354ef4894b97ac247d578427c [2021-12-17 19:07:15,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 19:07:15,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 19:07:15,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 19:07:15,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 19:07:15,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 19:07:15,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:07:15" (1/1) ... [2021-12-17 19:07:15,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713646ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:15, skipping insertion in model container [2021-12-17 19:07:15,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:07:15" (1/1) ... [2021-12-17 19:07:15,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 19:07:15,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 19:07:16,921 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_label49+token_ring.13.cil-2.c[380593,380606] [2021-12-17 19:07:16,944 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_label49+token_ring.13.cil-2.c[383339,383352] [2021-12-17 19:07:17,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 19:07:17,255 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 19:07:17,980 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_label49+token_ring.13.cil-2.c[380593,380606] [2021-12-17 19:07:17,985 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_label49+token_ring.13.cil-2.c[383339,383352] [2021-12-17 19:07:18,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 19:07:18,191 INFO L208 MainTranslator]: Completed translation [2021-12-17 19:07:18,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:18 WrapperNode [2021-12-17 19:07:18,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 19:07:18,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 19:07:18,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 19:07:18,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 19:07:18,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:18" (1/1) ... [2021-12-17 19:07:18,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:18" (1/1) ... [2021-12-17 19:07:18,763 INFO L137 Inliner]: procedures = 70, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13257 [2021-12-17 19:07:18,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 19:07:18,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 19:07:18,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 19:07:18,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 19:07:18,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:18" (1/1) ... [2021-12-17 19:07:18,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:18" (1/1) ... [2021-12-17 19:07:18,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:18" (1/1) ... [2021-12-17 19:07:18,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:18" (1/1) ... [2021-12-17 19:07:19,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:18" (1/1) ... [2021-12-17 19:07:19,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:18" (1/1) ... [2021-12-17 19:07:19,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:18" (1/1) ... [2021-12-17 19:07:19,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 19:07:19,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 19:07:19,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 19:07:19,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 19:07:19,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:18" (1/1) ... [2021-12-17 19:07:19,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 19:07:19,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:07:19,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 19:07:19,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 19:07:19,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 19:07:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 19:07:19,548 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 19:07:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 19:07:19,548 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 19:07:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 19:07:19,548 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 19:07:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 19:07:19,549 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 19:07:19,549 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 19:07:19,549 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 19:07:19,549 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 19:07:19,549 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 19:07:19,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 19:07:19,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 19:07:19,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 19:07:19,739 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 19:07:19,740 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 19:07:25,755 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 19:07:25,787 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 19:07:25,787 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-17 19:07:25,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:07:25 BoogieIcfgContainer [2021-12-17 19:07:25,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 19:07:25,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 19:07:25,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 19:07:25,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 19:07:25,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 07:07:15" (1/3) ... [2021-12-17 19:07:25,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240f0541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:07:25, skipping insertion in model container [2021-12-17 19:07:25,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:18" (2/3) ... [2021-12-17 19:07:25,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240f0541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:07:25, skipping insertion in model container [2021-12-17 19:07:25,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:07:25" (3/3) ... [2021-12-17 19:07:25,799 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.13.cil-2.c [2021-12-17 19:07:25,803 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 19:07:25,804 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 19:07:25,852 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 19:07:25,858 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 19:07:25,858 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 19:07:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 19:07:25,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:25,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:25,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:25,930 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:25,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:25,938 INFO L85 PathProgramCache]: Analyzing trace with hash -521467325, now seen corresponding path program 1 times [2021-12-17 19:07:25,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:25,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028521266] [2021-12-17 19:07:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:25,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:26,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:26,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:26,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:26,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:26,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:26,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:26,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028521266] [2021-12-17 19:07:26,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028521266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:26,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:26,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 19:07:26,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602204868] [2021-12-17 19:07:26,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:26,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 19:07:26,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:26,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 19:07:26,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 19:07:26,601 INFO L87 Difference]: Start difference. First operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:28,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:28,604 INFO L93 Difference]: Finished difference Result 5325 states and 9765 transitions. [2021-12-17 19:07:28,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 19:07:28,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:28,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:28,640 INFO L225 Difference]: With dead ends: 5325 [2021-12-17 19:07:28,640 INFO L226 Difference]: Without dead ends: 2676 [2021-12-17 19:07:28,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:07:28,651 INFO L933 BasicCegarLoop]: 4729 mSDtfsCounter, 1107 mSDsluCounter, 12512 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 17241 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:28,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 17241 Invalid, 817 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [62 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 19:07:28,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-12-17 19:07:28,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2523. [2021-12-17 19:07:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8243569131832797) internal successors, (4539), 2490 states have internal predecessors, (4539), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 19:07:28,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4593 transitions. [2021-12-17 19:07:28,796 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4593 transitions. Word has length 189 [2021-12-17 19:07:28,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:28,796 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4593 transitions. [2021-12-17 19:07:28,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:28,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4593 transitions. [2021-12-17 19:07:28,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:28,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:28,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:28,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 19:07:28,813 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:28,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:28,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1444519429, now seen corresponding path program 1 times [2021-12-17 19:07:28,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:28,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748153061] [2021-12-17 19:07:28,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:28,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:28,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:28,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:29,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:29,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:29,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:29,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:29,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:29,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748153061] [2021-12-17 19:07:29,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748153061] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:29,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:29,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 19:07:29,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481223290] [2021-12-17 19:07:29,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:29,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 19:07:29,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:29,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 19:07:29,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 19:07:29,071 INFO L87 Difference]: Start difference. First operand 2523 states and 4593 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:30,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:30,699 INFO L93 Difference]: Finished difference Result 3061 states and 5463 transitions. [2021-12-17 19:07:30,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 19:07:30,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:30,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:30,714 INFO L225 Difference]: With dead ends: 3061 [2021-12-17 19:07:30,714 INFO L226 Difference]: Without dead ends: 2676 [2021-12-17 19:07:30,717 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 [2021-12-17 19:07:30,718 INFO L933 BasicCegarLoop]: 4659 mSDtfsCounter, 1093 mSDsluCounter, 12309 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 16968 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:30,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1118 Valid, 16968 Invalid, 816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:07:30,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-12-17 19:07:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2523. [2021-12-17 19:07:30,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8239549839228295) internal successors, (4538), 2490 states have internal predecessors, (4538), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 19:07:30,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4592 transitions. [2021-12-17 19:07:30,790 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4592 transitions. Word has length 189 [2021-12-17 19:07:30,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:30,790 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4592 transitions. [2021-12-17 19:07:30,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:30,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4592 transitions. [2021-12-17 19:07:30,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:30,793 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:30,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:30,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 19:07:30,794 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:30,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:30,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1347349561, now seen corresponding path program 1 times [2021-12-17 19:07:30,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:30,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346806276] [2021-12-17 19:07:30,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:30,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:30,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:30,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:30,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:30,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:30,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:30,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346806276] [2021-12-17 19:07:30,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346806276] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:30,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:30,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 19:07:30,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105401056] [2021-12-17 19:07:30,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:30,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 19:07:30,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:30,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 19:07:30,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 19:07:30,975 INFO L87 Difference]: Start difference. First operand 2523 states and 4592 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:32,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:32,968 INFO L93 Difference]: Finished difference Result 3056 states and 5455 transitions. [2021-12-17 19:07:32,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 19:07:32,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:32,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:32,982 INFO L225 Difference]: With dead ends: 3056 [2021-12-17 19:07:32,982 INFO L226 Difference]: Without dead ends: 2675 [2021-12-17 19:07:32,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-17 19:07:32,987 INFO L933 BasicCegarLoop]: 4613 mSDtfsCounter, 5042 mSDsluCounter, 12581 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5063 SdHoareTripleChecker+Valid, 17194 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:32,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5063 Valid, 17194 Invalid, 1484 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 19:07:32,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2021-12-17 19:07:33,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 2523. [2021-12-17 19:07:33,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8235530546623795) internal successors, (4537), 2490 states have internal predecessors, (4537), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 19:07:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4591 transitions. [2021-12-17 19:07:33,066 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4591 transitions. Word has length 189 [2021-12-17 19:07:33,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:33,067 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4591 transitions. [2021-12-17 19:07:33,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:33,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4591 transitions. [2021-12-17 19:07:33,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:33,069 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:33,070 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:33,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 19:07:33,070 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:33,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:33,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1024367305, now seen corresponding path program 1 times [2021-12-17 19:07:33,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:33,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048717123] [2021-12-17 19:07:33,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:33,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:33,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:33,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:33,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:33,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:33,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:33,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:33,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:33,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048717123] [2021-12-17 19:07:33,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048717123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:33,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:33,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:33,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111042789] [2021-12-17 19:07:33,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:33,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:33,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:33,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:33,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:33,221 INFO L87 Difference]: Start difference. First operand 2523 states and 4591 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:34,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:34,838 INFO L93 Difference]: Finished difference Result 3055 states and 5453 transitions. [2021-12-17 19:07:34,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 19:07:34,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:34,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:34,850 INFO L225 Difference]: With dead ends: 3055 [2021-12-17 19:07:34,851 INFO L226 Difference]: Without dead ends: 2674 [2021-12-17 19:07:34,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 19:07:34,855 INFO L933 BasicCegarLoop]: 4603 mSDtfsCounter, 5324 mSDsluCounter, 12660 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5345 SdHoareTripleChecker+Valid, 17263 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:34,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5345 Valid, 17263 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 19:07:34,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-12-17 19:07:34,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2523. [2021-12-17 19:07:34,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.822347266881029) internal successors, (4534), 2490 states have internal predecessors, (4534), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 19:07:34,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4588 transitions. [2021-12-17 19:07:34,998 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4588 transitions. Word has length 189 [2021-12-17 19:07:34,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:34,998 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4588 transitions. [2021-12-17 19:07:34,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:34,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4588 transitions. [2021-12-17 19:07:35,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:35,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:35,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:35,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 19:07:35,001 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:35,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:35,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1228031685, now seen corresponding path program 1 times [2021-12-17 19:07:35,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:35,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202757963] [2021-12-17 19:07:35,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:35,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:35,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:35,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:35,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:35,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:35,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:35,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:35,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:35,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202757963] [2021-12-17 19:07:35,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202757963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:35,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:35,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:35,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976848253] [2021-12-17 19:07:35,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:35,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:35,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:35,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:35,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:35,188 INFO L87 Difference]: Start difference. First operand 2523 states and 4588 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:37,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:37,189 INFO L93 Difference]: Finished difference Result 3081 states and 5495 transitions. [2021-12-17 19:07:37,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:37,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:37,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:37,208 INFO L225 Difference]: With dead ends: 3081 [2021-12-17 19:07:37,208 INFO L226 Difference]: Without dead ends: 2700 [2021-12-17 19:07:37,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:37,213 INFO L933 BasicCegarLoop]: 4650 mSDtfsCounter, 5141 mSDsluCounter, 16823 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5162 SdHoareTripleChecker+Valid, 21473 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:37,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5162 Valid, 21473 Invalid, 1685 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 19:07:37,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2021-12-17 19:07:37,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2523. [2021-12-17 19:07:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8219453376205788) internal successors, (4533), 2490 states have internal predecessors, (4533), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 19:07:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4587 transitions. [2021-12-17 19:07:37,308 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4587 transitions. Word has length 189 [2021-12-17 19:07:37,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:37,309 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4587 transitions. [2021-12-17 19:07:37,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:37,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4587 transitions. [2021-12-17 19:07:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:37,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:37,312 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:37,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 19:07:37,313 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:37,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:37,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1798303491, now seen corresponding path program 1 times [2021-12-17 19:07:37,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:37,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076550142] [2021-12-17 19:07:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:37,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:37,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:37,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076550142] [2021-12-17 19:07:37,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076550142] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:37,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:37,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:37,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190811095] [2021-12-17 19:07:37,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:37,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:37,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:37,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:37,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:37,487 INFO L87 Difference]: Start difference. First operand 2523 states and 4587 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:39,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:39,202 INFO L93 Difference]: Finished difference Result 3080 states and 5490 transitions. [2021-12-17 19:07:39,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:39,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:39,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:39,214 INFO L225 Difference]: With dead ends: 3080 [2021-12-17 19:07:39,214 INFO L226 Difference]: Without dead ends: 2699 [2021-12-17 19:07:39,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:39,217 INFO L933 BasicCegarLoop]: 4646 mSDtfsCounter, 5316 mSDsluCounter, 12659 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5337 SdHoareTripleChecker+Valid, 17305 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:39,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5337 Valid, 17305 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 19:07:39,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2021-12-17 19:07:39,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2523. [2021-12-17 19:07:39,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8215434083601285) internal successors, (4532), 2490 states have internal predecessors, (4532), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 19:07:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4586 transitions. [2021-12-17 19:07:39,285 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4586 transitions. Word has length 189 [2021-12-17 19:07:39,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:39,285 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4586 transitions. [2021-12-17 19:07:39,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4586 transitions. [2021-12-17 19:07:39,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:39,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:39,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:39,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 19:07:39,288 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:39,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:39,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1092794619, now seen corresponding path program 1 times [2021-12-17 19:07:39,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:39,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120456824] [2021-12-17 19:07:39,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:39,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:39,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:39,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:39,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:39,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:39,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:39,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:39,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120456824] [2021-12-17 19:07:39,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120456824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:39,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:39,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 19:07:39,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713186709] [2021-12-17 19:07:39,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:39,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 19:07:39,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:39,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 19:07:39,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:07:39,473 INFO L87 Difference]: Start difference. First operand 2523 states and 4586 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:42,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:42,571 INFO L93 Difference]: Finished difference Result 3633 states and 6375 transitions. [2021-12-17 19:07:42,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 19:07:42,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:42,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:42,587 INFO L225 Difference]: With dead ends: 3633 [2021-12-17 19:07:42,587 INFO L226 Difference]: Without dead ends: 3252 [2021-12-17 19:07:42,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-17 19:07:42,592 INFO L933 BasicCegarLoop]: 5014 mSDtfsCounter, 6125 mSDsluCounter, 18225 mSDsCounter, 0 mSdLazyCounter, 3005 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6146 SdHoareTripleChecker+Valid, 23239 SdHoareTripleChecker+Invalid, 3122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 3005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:42,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6146 Valid, 23239 Invalid, 3122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 3005 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 19:07:42,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2021-12-17 19:07:42,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 2924. [2021-12-17 19:07:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7901364113326337) internal successors, (5118), 2862 states have internal predecessors, (5118), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:42,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5221 transitions. [2021-12-17 19:07:42,713 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5221 transitions. Word has length 189 [2021-12-17 19:07:42,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:42,714 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5221 transitions. [2021-12-17 19:07:42,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:42,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5221 transitions. [2021-12-17 19:07:42,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:42,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:42,724 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:42,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 19:07:42,725 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:42,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:42,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1878792509, now seen corresponding path program 1 times [2021-12-17 19:07:42,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:42,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103642855] [2021-12-17 19:07:42,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:42,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:42,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:42,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:42,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:42,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:42,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:42,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103642855] [2021-12-17 19:07:42,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103642855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:42,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:42,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:42,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286124994] [2021-12-17 19:07:42,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:42,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:42,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:42,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:42,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:42,921 INFO L87 Difference]: Start difference. First operand 2924 states and 5221 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:44,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:44,530 INFO L93 Difference]: Finished difference Result 4077 states and 7097 transitions. [2021-12-17 19:07:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:44,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:44,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:44,543 INFO L225 Difference]: With dead ends: 4077 [2021-12-17 19:07:44,543 INFO L226 Difference]: Without dead ends: 3295 [2021-12-17 19:07:44,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:44,547 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 5401 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5422 SdHoareTripleChecker+Valid, 17250 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:44,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5422 Valid, 17250 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:07:44,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2021-12-17 19:07:44,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 2924. [2021-12-17 19:07:44,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7894368660370759) internal successors, (5116), 2862 states have internal predecessors, (5116), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:44,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5219 transitions. [2021-12-17 19:07:44,647 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5219 transitions. Word has length 189 [2021-12-17 19:07:44,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:44,647 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5219 transitions. [2021-12-17 19:07:44,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:44,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5219 transitions. [2021-12-17 19:07:44,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:44,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:44,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:44,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 19:07:44,650 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:44,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:44,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1211410619, now seen corresponding path program 1 times [2021-12-17 19:07:44,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:44,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243683648] [2021-12-17 19:07:44,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:44,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:44,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:44,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:44,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:44,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:44,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:44,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:44,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243683648] [2021-12-17 19:07:44,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243683648] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:44,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:44,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:44,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629190094] [2021-12-17 19:07:44,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:44,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:44,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:44,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:44,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:44,803 INFO L87 Difference]: Start difference. First operand 2924 states and 5219 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:46,223 INFO L93 Difference]: Finished difference Result 4074 states and 7085 transitions. [2021-12-17 19:07:46,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:46,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:46,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:46,235 INFO L225 Difference]: With dead ends: 4074 [2021-12-17 19:07:46,236 INFO L226 Difference]: Without dead ends: 3292 [2021-12-17 19:07:46,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:46,240 INFO L933 BasicCegarLoop]: 4634 mSDtfsCounter, 5313 mSDsluCounter, 12659 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5334 SdHoareTripleChecker+Valid, 17293 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:46,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5334 Valid, 17293 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:07:46,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2021-12-17 19:07:46,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 2924. [2021-12-17 19:07:46,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.788737320741518) internal successors, (5114), 2862 states have internal predecessors, (5114), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5217 transitions. [2021-12-17 19:07:46,334 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5217 transitions. Word has length 189 [2021-12-17 19:07:46,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:46,334 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5217 transitions. [2021-12-17 19:07:46,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:46,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5217 transitions. [2021-12-17 19:07:46,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:46,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:46,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:46,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 19:07:46,338 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:46,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:46,339 INFO L85 PathProgramCache]: Analyzing trace with hash 888327811, now seen corresponding path program 1 times [2021-12-17 19:07:46,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:46,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578184350] [2021-12-17 19:07:46,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:46,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:46,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:46,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:46,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:46,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:46,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:46,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:46,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578184350] [2021-12-17 19:07:46,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578184350] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:46,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:46,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:46,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803281538] [2021-12-17 19:07:46,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:46,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:46,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:46,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:46,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:46,506 INFO L87 Difference]: Start difference. First operand 2924 states and 5217 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:48,072 INFO L93 Difference]: Finished difference Result 4071 states and 7073 transitions. [2021-12-17 19:07:48,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:48,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:48,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:48,083 INFO L225 Difference]: With dead ends: 4071 [2021-12-17 19:07:48,083 INFO L226 Difference]: Without dead ends: 3289 [2021-12-17 19:07:48,088 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 [2021-12-17 19:07:48,088 INFO L933 BasicCegarLoop]: 4630 mSDtfsCounter, 5134 mSDsluCounter, 16823 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5155 SdHoareTripleChecker+Valid, 21453 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:48,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5155 Valid, 21453 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:07:48,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-12-17 19:07:48,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2924. [2021-12-17 19:07:48,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7880377754459602) internal successors, (5112), 2862 states have internal predecessors, (5112), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:48,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5215 transitions. [2021-12-17 19:07:48,187 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5215 transitions. Word has length 189 [2021-12-17 19:07:48,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:48,187 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5215 transitions. [2021-12-17 19:07:48,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5215 transitions. [2021-12-17 19:07:48,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:48,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:48,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:48,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 19:07:48,191 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:48,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:48,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1233155973, now seen corresponding path program 1 times [2021-12-17 19:07:48,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:48,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962947080] [2021-12-17 19:07:48,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:48,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:48,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:48,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:48,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:48,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:48,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:48,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:48,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962947080] [2021-12-17 19:07:48,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962947080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:48,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:48,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:48,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313965955] [2021-12-17 19:07:48,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:48,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:48,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:48,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:48,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:48,338 INFO L87 Difference]: Start difference. First operand 2924 states and 5215 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:49,685 INFO L93 Difference]: Finished difference Result 4068 states and 7061 transitions. [2021-12-17 19:07:49,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:49,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:49,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:49,695 INFO L225 Difference]: With dead ends: 4068 [2021-12-17 19:07:49,695 INFO L226 Difference]: Without dead ends: 3286 [2021-12-17 19:07:49,699 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 [2021-12-17 19:07:49,700 INFO L933 BasicCegarLoop]: 4624 mSDtfsCounter, 5312 mSDsluCounter, 12659 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5333 SdHoareTripleChecker+Valid, 17283 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:49,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5333 Valid, 17283 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:07:49,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2021-12-17 19:07:49,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 2924. [2021-12-17 19:07:49,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7873382301504022) internal successors, (5110), 2862 states have internal predecessors, (5110), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:49,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5213 transitions. [2021-12-17 19:07:49,801 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5213 transitions. Word has length 189 [2021-12-17 19:07:49,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:49,801 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5213 transitions. [2021-12-17 19:07:49,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:49,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5213 transitions. [2021-12-17 19:07:49,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:49,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:49,804 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:49,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 19:07:49,804 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:49,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:49,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2080856509, now seen corresponding path program 1 times [2021-12-17 19:07:49,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:49,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424998794] [2021-12-17 19:07:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:49,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:49,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:49,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:49,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:49,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:49,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:49,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:49,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424998794] [2021-12-17 19:07:49,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424998794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:49,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:49,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:49,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133264382] [2021-12-17 19:07:49,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:49,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:49,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:49,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:49,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:49,949 INFO L87 Difference]: Start difference. First operand 2924 states and 5213 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:51,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:51,491 INFO L93 Difference]: Finished difference Result 4062 states and 7043 transitions. [2021-12-17 19:07:51,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:51,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:51,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:51,498 INFO L225 Difference]: With dead ends: 4062 [2021-12-17 19:07:51,498 INFO L226 Difference]: Without dead ends: 3280 [2021-12-17 19:07:51,501 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 [2021-12-17 19:07:51,501 INFO L933 BasicCegarLoop]: 4618 mSDtfsCounter, 5131 mSDsluCounter, 16823 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5152 SdHoareTripleChecker+Valid, 21441 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:51,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5152 Valid, 21441 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:07:51,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2021-12-17 19:07:51,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 2924. [2021-12-17 19:07:51,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7866386848548443) internal successors, (5108), 2862 states have internal predecessors, (5108), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:51,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5211 transitions. [2021-12-17 19:07:51,591 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5211 transitions. Word has length 189 [2021-12-17 19:07:51,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:51,592 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5211 transitions. [2021-12-17 19:07:51,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:51,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5211 transitions. [2021-12-17 19:07:51,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:51,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:51,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:51,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 19:07:51,595 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:51,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:51,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1602841729, now seen corresponding path program 1 times [2021-12-17 19:07:51,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:51,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778013356] [2021-12-17 19:07:51,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:51,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:51,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:51,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:51,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:51,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:51,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:51,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778013356] [2021-12-17 19:07:51,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778013356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:51,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:51,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:51,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723089891] [2021-12-17 19:07:51,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:51,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:51,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:51,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:51,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:51,736 INFO L87 Difference]: Start difference. First operand 2924 states and 5211 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:53,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:53,319 INFO L93 Difference]: Finished difference Result 4059 states and 7031 transitions. [2021-12-17 19:07:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:53,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:53,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:53,327 INFO L225 Difference]: With dead ends: 4059 [2021-12-17 19:07:53,328 INFO L226 Difference]: Without dead ends: 3277 [2021-12-17 19:07:53,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:53,332 INFO L933 BasicCegarLoop]: 4614 mSDtfsCounter, 5129 mSDsluCounter, 16823 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5150 SdHoareTripleChecker+Valid, 21437 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:53,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5150 Valid, 21437 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:07:53,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2021-12-17 19:07:53,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 2924. [2021-12-17 19:07:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7859391395592865) internal successors, (5106), 2862 states have internal predecessors, (5106), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:53,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5209 transitions. [2021-12-17 19:07:53,424 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5209 transitions. Word has length 189 [2021-12-17 19:07:53,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:53,424 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5209 transitions. [2021-12-17 19:07:53,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:53,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5209 transitions. [2021-12-17 19:07:53,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:53,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:53,427 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:53,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 19:07:53,427 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:53,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash 197650051, now seen corresponding path program 1 times [2021-12-17 19:07:53,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:53,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721097734] [2021-12-17 19:07:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:53,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:53,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:53,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:53,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:53,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:53,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:53,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:53,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:53,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721097734] [2021-12-17 19:07:53,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721097734] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:53,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:53,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:53,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604407438] [2021-12-17 19:07:53,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:53,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:53,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:53,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:53,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:53,569 INFO L87 Difference]: Start difference. First operand 2924 states and 5209 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:54,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:54,937 INFO L93 Difference]: Finished difference Result 4056 states and 7019 transitions. [2021-12-17 19:07:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:54,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:54,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:54,946 INFO L225 Difference]: With dead ends: 4056 [2021-12-17 19:07:54,946 INFO L226 Difference]: Without dead ends: 3274 [2021-12-17 19:07:54,950 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 [2021-12-17 19:07:54,951 INFO L933 BasicCegarLoop]: 4610 mSDtfsCounter, 5304 mSDsluCounter, 12659 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5325 SdHoareTripleChecker+Valid, 17269 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:54,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5325 Valid, 17269 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:07:54,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2021-12-17 19:07:55,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2924. [2021-12-17 19:07:55,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7852395942637285) internal successors, (5104), 2862 states have internal predecessors, (5104), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:55,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5207 transitions. [2021-12-17 19:07:55,049 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5207 transitions. Word has length 189 [2021-12-17 19:07:55,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:55,049 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5207 transitions. [2021-12-17 19:07:55,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:55,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5207 transitions. [2021-12-17 19:07:55,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:55,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:55,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:55,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 19:07:55,051 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:55,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:55,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2091983937, now seen corresponding path program 1 times [2021-12-17 19:07:55,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:55,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794365916] [2021-12-17 19:07:55,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:55,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:55,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:55,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:55,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:55,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:55,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:55,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:55,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794365916] [2021-12-17 19:07:55,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794365916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:55,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:55,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:55,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790103590] [2021-12-17 19:07:55,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:55,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:55,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:55,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:55,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:55,188 INFO L87 Difference]: Start difference. First operand 2924 states and 5207 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:56,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:56,514 INFO L93 Difference]: Finished difference Result 4053 states and 7007 transitions. [2021-12-17 19:07:56,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:56,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:56,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:56,527 INFO L225 Difference]: With dead ends: 4053 [2021-12-17 19:07:56,528 INFO L226 Difference]: Without dead ends: 3271 [2021-12-17 19:07:56,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:56,532 INFO L933 BasicCegarLoop]: 4577 mSDtfsCounter, 5354 mSDsluCounter, 12655 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5375 SdHoareTripleChecker+Valid, 17232 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:56,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5375 Valid, 17232 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 19:07:56,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2021-12-17 19:07:56,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 2924. [2021-12-17 19:07:56,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7845400489681706) internal successors, (5102), 2862 states have internal predecessors, (5102), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5205 transitions. [2021-12-17 19:07:56,627 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5205 transitions. Word has length 189 [2021-12-17 19:07:56,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:56,627 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5205 transitions. [2021-12-17 19:07:56,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5205 transitions. [2021-12-17 19:07:56,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:56,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:56,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:56,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 19:07:56,630 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:56,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:56,631 INFO L85 PathProgramCache]: Analyzing trace with hash -756402493, now seen corresponding path program 1 times [2021-12-17 19:07:56,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:56,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473220462] [2021-12-17 19:07:56,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:56,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:56,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:56,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:56,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:56,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:56,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:56,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:56,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473220462] [2021-12-17 19:07:56,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473220462] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:56,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:56,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:56,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316550142] [2021-12-17 19:07:56,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:56,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:56,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:56,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:56,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:56,780 INFO L87 Difference]: Start difference. First operand 2924 states and 5205 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:58,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:58,147 INFO L93 Difference]: Finished difference Result 4050 states and 6995 transitions. [2021-12-17 19:07:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:58,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:58,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:58,155 INFO L225 Difference]: With dead ends: 4050 [2021-12-17 19:07:58,155 INFO L226 Difference]: Without dead ends: 3268 [2021-12-17 19:07:58,157 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 [2021-12-17 19:07:58,159 INFO L933 BasicCegarLoop]: 4602 mSDtfsCounter, 5298 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5319 SdHoareTripleChecker+Valid, 17259 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:58,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5319 Valid, 17259 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:07:58,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2021-12-17 19:07:58,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 2924. [2021-12-17 19:07:58,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7838405036726128) internal successors, (5100), 2862 states have internal predecessors, (5100), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5203 transitions. [2021-12-17 19:07:58,252 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5203 transitions. Word has length 189 [2021-12-17 19:07:58,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:58,253 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5203 transitions. [2021-12-17 19:07:58,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:58,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5203 transitions. [2021-12-17 19:07:58,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:58,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:58,255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:58,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 19:07:58,256 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:58,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:58,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1679569919, now seen corresponding path program 1 times [2021-12-17 19:07:58,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:58,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245585176] [2021-12-17 19:07:58,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:58,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:58,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:58,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:58,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:58,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:58,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:58,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245585176] [2021-12-17 19:07:58,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245585176] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:58,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:58,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:58,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211057095] [2021-12-17 19:07:58,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:58,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:58,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:58,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:58,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:58,409 INFO L87 Difference]: Start difference. First operand 2924 states and 5203 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:59,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:59,689 INFO L93 Difference]: Finished difference Result 4047 states and 6983 transitions. [2021-12-17 19:07:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:59,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:07:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:59,694 INFO L225 Difference]: With dead ends: 4047 [2021-12-17 19:07:59,694 INFO L226 Difference]: Without dead ends: 3265 [2021-12-17 19:07:59,696 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 [2021-12-17 19:07:59,696 INFO L933 BasicCegarLoop]: 4598 mSDtfsCounter, 5296 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5317 SdHoareTripleChecker+Valid, 17255 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:59,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5317 Valid, 17255 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 19:07:59,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2021-12-17 19:07:59,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2924. [2021-12-17 19:07:59,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.783140958377055) internal successors, (5098), 2862 states have internal predecessors, (5098), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:59,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5201 transitions. [2021-12-17 19:07:59,792 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5201 transitions. Word has length 189 [2021-12-17 19:07:59,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:59,792 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5201 transitions. [2021-12-17 19:07:59,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5201 transitions. [2021-12-17 19:07:59,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:07:59,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:59,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:59,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 19:07:59,795 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:59,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:59,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1293707517, now seen corresponding path program 1 times [2021-12-17 19:07:59,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:59,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889782967] [2021-12-17 19:07:59,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:59,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:59,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:59,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:59,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:59,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:59,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:59,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:59,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889782967] [2021-12-17 19:07:59,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889782967] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:59,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:59,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:59,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198835216] [2021-12-17 19:07:59,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:59,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:59,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:59,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:59,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:59,940 INFO L87 Difference]: Start difference. First operand 2924 states and 5201 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:01,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:01,387 INFO L93 Difference]: Finished difference Result 4044 states and 6971 transitions. [2021-12-17 19:08:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:08:01,387 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:08:01,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:01,392 INFO L225 Difference]: With dead ends: 4044 [2021-12-17 19:08:01,392 INFO L226 Difference]: Without dead ends: 3262 [2021-12-17 19:08:01,394 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 [2021-12-17 19:08:01,394 INFO L933 BasicCegarLoop]: 4592 mSDtfsCounter, 5297 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5318 SdHoareTripleChecker+Valid, 17249 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:01,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5318 Valid, 17249 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:08:01,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2021-12-17 19:08:01,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 2924. [2021-12-17 19:08:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.782441413081497) internal successors, (5096), 2862 states have internal predecessors, (5096), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:08:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5199 transitions. [2021-12-17 19:08:01,477 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5199 transitions. Word has length 189 [2021-12-17 19:08:01,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:01,477 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5199 transitions. [2021-12-17 19:08:01,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:01,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5199 transitions. [2021-12-17 19:08:01,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:08:01,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:01,480 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:01,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 19:08:01,480 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:01,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:01,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1558355007, now seen corresponding path program 1 times [2021-12-17 19:08:01,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:01,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46722721] [2021-12-17 19:08:01,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:01,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:01,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:01,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:01,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:01,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:01,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:01,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:01,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:01,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46722721] [2021-12-17 19:08:01,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46722721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:01,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:01,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:08:01,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811638170] [2021-12-17 19:08:01,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:01,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:08:01,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:01,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:08:01,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:08:01,626 INFO L87 Difference]: Start difference. First operand 2924 states and 5199 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:03,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:03,154 INFO L93 Difference]: Finished difference Result 4038 states and 6953 transitions. [2021-12-17 19:08:03,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:08:03,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:08:03,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:03,159 INFO L225 Difference]: With dead ends: 4038 [2021-12-17 19:08:03,160 INFO L226 Difference]: Without dead ends: 3256 [2021-12-17 19:08:03,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:08:03,162 INFO L933 BasicCegarLoop]: 4586 mSDtfsCounter, 5293 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5314 SdHoareTripleChecker+Valid, 17243 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:03,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5314 Valid, 17243 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:08:03,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2021-12-17 19:08:03,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 2924. [2021-12-17 19:08:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7817418677859391) internal successors, (5094), 2862 states have internal predecessors, (5094), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:08:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5197 transitions. [2021-12-17 19:08:03,255 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5197 transitions. Word has length 189 [2021-12-17 19:08:03,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:03,255 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5197 transitions. [2021-12-17 19:08:03,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:03,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5197 transitions. [2021-12-17 19:08:03,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:08:03,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:03,258 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:03,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 19:08:03,258 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:03,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:03,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1413433343, now seen corresponding path program 1 times [2021-12-17 19:08:03,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:03,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795657796] [2021-12-17 19:08:03,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:03,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:03,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:03,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:03,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:03,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:03,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:03,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795657796] [2021-12-17 19:08:03,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795657796] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:03,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:03,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:08:03,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296448384] [2021-12-17 19:08:03,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:03,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:08:03,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:03,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:08:03,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:08:03,386 INFO L87 Difference]: Start difference. First operand 2924 states and 5197 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:04,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:04,786 INFO L93 Difference]: Finished difference Result 4035 states and 6941 transitions. [2021-12-17 19:08:04,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:08:04,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:08:04,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:04,793 INFO L225 Difference]: With dead ends: 4035 [2021-12-17 19:08:04,793 INFO L226 Difference]: Without dead ends: 3253 [2021-12-17 19:08:04,795 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 [2021-12-17 19:08:04,796 INFO L933 BasicCegarLoop]: 4582 mSDtfsCounter, 5291 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5312 SdHoareTripleChecker+Valid, 17239 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:04,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5312 Valid, 17239 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:08:04,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2021-12-17 19:08:04,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 2924. [2021-12-17 19:08:04,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2859 states have (on average 1.7810423224903813) internal successors, (5092), 2862 states have internal predecessors, (5092), 50 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:08:04,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5195 transitions. [2021-12-17 19:08:04,896 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5195 transitions. Word has length 189 [2021-12-17 19:08:04,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:04,897 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 5195 transitions. [2021-12-17 19:08:04,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:04,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5195 transitions. [2021-12-17 19:08:04,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:08:04,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:04,899 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:04,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 19:08:04,899 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:04,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:04,900 INFO L85 PathProgramCache]: Analyzing trace with hash -984554495, now seen corresponding path program 1 times [2021-12-17 19:08:04,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:04,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179298273] [2021-12-17 19:08:04,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:04,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:04,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:04,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:05,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:05,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:05,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179298273] [2021-12-17 19:08:05,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179298273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:05,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:05,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 19:08:05,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438604906] [2021-12-17 19:08:05,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:05,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 19:08:05,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:05,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 19:08:05,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:05,040 INFO L87 Difference]: Start difference. First operand 2924 states and 5195 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:07,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:07,847 INFO L93 Difference]: Finished difference Result 5322 states and 8961 transitions. [2021-12-17 19:08:07,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 19:08:07,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:08:07,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:07,854 INFO L225 Difference]: With dead ends: 5322 [2021-12-17 19:08:07,854 INFO L226 Difference]: Without dead ends: 4540 [2021-12-17 19:08:07,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 19:08:07,856 INFO L933 BasicCegarLoop]: 4915 mSDtfsCounter, 6344 mSDsluCounter, 18210 mSDsCounter, 0 mSdLazyCounter, 2672 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6380 SdHoareTripleChecker+Valid, 23125 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:07,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6380 Valid, 23125 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2672 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-17 19:08:07,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4540 states. [2021-12-17 19:08:08,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4540 to 3720. [2021-12-17 19:08:08,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3595 states have (on average 1.7321279554937412) internal successors, (6227), 3602 states have internal predecessors, (6227), 94 states have call successors, (94), 24 states have call predecessors, (94), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 19:08:08,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6430 transitions. [2021-12-17 19:08:08,044 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6430 transitions. Word has length 189 [2021-12-17 19:08:08,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:08,044 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6430 transitions. [2021-12-17 19:08:08,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:08,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6430 transitions. [2021-12-17 19:08:08,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:08:08,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:08,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:08,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 19:08:08,047 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:08,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:08,047 INFO L85 PathProgramCache]: Analyzing trace with hash -646266945, now seen corresponding path program 1 times [2021-12-17 19:08:08,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:08,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793397266] [2021-12-17 19:08:08,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:08,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:08,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:08,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:08,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:08,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:08,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:08,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:08,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793397266] [2021-12-17 19:08:08,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793397266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:08,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:08,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:08:08,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559164241] [2021-12-17 19:08:08,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:08,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:08:08,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:08,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:08:08,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:08:08,185 INFO L87 Difference]: Start difference. First operand 3720 states and 6430 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:09,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:09,880 INFO L93 Difference]: Finished difference Result 5965 states and 9952 transitions. [2021-12-17 19:08:09,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:08:09,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:08:09,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:09,892 INFO L225 Difference]: With dead ends: 5965 [2021-12-17 19:08:09,892 INFO L226 Difference]: Without dead ends: 4387 [2021-12-17 19:08:09,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:08:09,898 INFO L933 BasicCegarLoop]: 4562 mSDtfsCounter, 5135 mSDsluCounter, 16819 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5156 SdHoareTripleChecker+Valid, 21381 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:09,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5156 Valid, 21381 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:08:09,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2021-12-17 19:08:10,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 3720. [2021-12-17 19:08:10,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3595 states have (on average 1.7310152990264256) internal successors, (6223), 3602 states have internal predecessors, (6223), 94 states have call successors, (94), 24 states have call predecessors, (94), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 19:08:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6426 transitions. [2021-12-17 19:08:10,140 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6426 transitions. Word has length 189 [2021-12-17 19:08:10,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:10,141 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6426 transitions. [2021-12-17 19:08:10,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:10,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6426 transitions. [2021-12-17 19:08:10,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:08:10,143 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:10,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:10,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 19:08:10,143 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:10,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:10,143 INFO L85 PathProgramCache]: Analyzing trace with hash -219712447, now seen corresponding path program 1 times [2021-12-17 19:08:10,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:10,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408231183] [2021-12-17 19:08:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:10,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:10,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:10,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408231183] [2021-12-17 19:08:10,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408231183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:10,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:10,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:08:10,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981930809] [2021-12-17 19:08:10,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:10,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:08:10,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:10,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:08:10,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:08:10,345 INFO L87 Difference]: Start difference. First operand 3720 states and 6426 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:11,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:11,912 INFO L93 Difference]: Finished difference Result 5956 states and 9922 transitions. [2021-12-17 19:08:11,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:08:11,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:08:11,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:11,921 INFO L225 Difference]: With dead ends: 5956 [2021-12-17 19:08:11,921 INFO L226 Difference]: Without dead ends: 4378 [2021-12-17 19:08:11,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:08:11,926 INFO L933 BasicCegarLoop]: 4571 mSDtfsCounter, 5111 mSDsluCounter, 16821 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5132 SdHoareTripleChecker+Valid, 21392 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:11,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5132 Valid, 21392 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:08:11,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4378 states. [2021-12-17 19:08:12,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4378 to 3720. [2021-12-17 19:08:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3595 states have (on average 1.72990264255911) internal successors, (6219), 3602 states have internal predecessors, (6219), 94 states have call successors, (94), 24 states have call predecessors, (94), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 19:08:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6422 transitions. [2021-12-17 19:08:12,100 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6422 transitions. Word has length 189 [2021-12-17 19:08:12,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:12,100 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6422 transitions. [2021-12-17 19:08:12,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:12,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6422 transitions. [2021-12-17 19:08:12,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:08:12,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:12,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:12,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 19:08:12,102 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:12,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:12,103 INFO L85 PathProgramCache]: Analyzing trace with hash -760141953, now seen corresponding path program 1 times [2021-12-17 19:08:12,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:12,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327722904] [2021-12-17 19:08:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:12,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:12,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:12,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:12,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:12,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:12,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:12,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327722904] [2021-12-17 19:08:12,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327722904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:12,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:12,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:08:12,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065179343] [2021-12-17 19:08:12,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:12,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:08:12,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:12,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:08:12,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:08:12,241 INFO L87 Difference]: Start difference. First operand 3720 states and 6422 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:13,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:13,855 INFO L93 Difference]: Finished difference Result 5947 states and 9892 transitions. [2021-12-17 19:08:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:08:13,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:08:13,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:13,864 INFO L225 Difference]: With dead ends: 5947 [2021-12-17 19:08:13,864 INFO L226 Difference]: Without dead ends: 4369 [2021-12-17 19:08:13,867 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 [2021-12-17 19:08:13,868 INFO L933 BasicCegarLoop]: 4567 mSDtfsCounter, 5109 mSDsluCounter, 16821 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5130 SdHoareTripleChecker+Valid, 21388 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:13,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5130 Valid, 21388 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:08:13,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4369 states. [2021-12-17 19:08:14,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4369 to 3720. [2021-12-17 19:08:14,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3595 states have (on average 1.7287899860917941) internal successors, (6215), 3602 states have internal predecessors, (6215), 94 states have call successors, (94), 24 states have call predecessors, (94), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 19:08:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6418 transitions. [2021-12-17 19:08:14,028 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6418 transitions. Word has length 189 [2021-12-17 19:08:14,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:14,028 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6418 transitions. [2021-12-17 19:08:14,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:14,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6418 transitions. [2021-12-17 19:08:14,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:08:14,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:14,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:14,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 19:08:14,031 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:14,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:14,031 INFO L85 PathProgramCache]: Analyzing trace with hash -916122495, now seen corresponding path program 1 times [2021-12-17 19:08:14,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:14,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446338870] [2021-12-17 19:08:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:14,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:14,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:14,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:14,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:14,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:14,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:14,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:14,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446338870] [2021-12-17 19:08:14,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446338870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:14,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:14,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:08:14,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786575511] [2021-12-17 19:08:14,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:14,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:08:14,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:14,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:08:14,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:08:14,168 INFO L87 Difference]: Start difference. First operand 3720 states and 6418 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:15,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:15,592 INFO L93 Difference]: Finished difference Result 5938 states and 9862 transitions. [2021-12-17 19:08:15,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:08:15,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:08:15,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:15,599 INFO L225 Difference]: With dead ends: 5938 [2021-12-17 19:08:15,599 INFO L226 Difference]: Without dead ends: 4360 [2021-12-17 19:08:15,603 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 [2021-12-17 19:08:15,603 INFO L933 BasicCegarLoop]: 4561 mSDtfsCounter, 5287 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5308 SdHoareTripleChecker+Valid, 17218 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:15,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5308 Valid, 17218 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 19:08:15,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4360 states. [2021-12-17 19:08:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4360 to 3720. [2021-12-17 19:08:15,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3595 states have (on average 1.7276773296244785) internal successors, (6211), 3602 states have internal predecessors, (6211), 94 states have call successors, (94), 24 states have call predecessors, (94), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 19:08:15,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 6414 transitions. [2021-12-17 19:08:15,762 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 6414 transitions. Word has length 189 [2021-12-17 19:08:15,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:15,762 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 6414 transitions. [2021-12-17 19:08:15,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:15,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 6414 transitions. [2021-12-17 19:08:15,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:08:15,764 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:15,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:15,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 19:08:15,765 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:15,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash -505512129, now seen corresponding path program 1 times [2021-12-17 19:08:15,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:15,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117511248] [2021-12-17 19:08:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:15,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:15,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:15,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117511248] [2021-12-17 19:08:15,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117511248] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:15,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:15,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 19:08:15,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437115393] [2021-12-17 19:08:15,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:15,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 19:08:15,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:15,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 19:08:15,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:15,911 INFO L87 Difference]: Start difference. First operand 3720 states and 6414 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:19,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:19,368 INFO L93 Difference]: Finished difference Result 8156 states and 13352 transitions. [2021-12-17 19:08:19,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 19:08:19,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:08:19,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:19,384 INFO L225 Difference]: With dead ends: 8156 [2021-12-17 19:08:19,385 INFO L226 Difference]: Without dead ends: 6578 [2021-12-17 19:08:19,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 19:08:19,392 INFO L933 BasicCegarLoop]: 4894 mSDtfsCounter, 5648 mSDsluCounter, 22552 mSDsCounter, 0 mSdLazyCounter, 3028 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5668 SdHoareTripleChecker+Valid, 27446 SdHoareTripleChecker+Invalid, 3128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:19,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5668 Valid, 27446 Invalid, 3128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 3028 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 19:08:19,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6578 states. [2021-12-17 19:08:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6578 to 5300. [2021-12-17 19:08:19,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 5051 states have (on average 1.6687784597109483) internal successors, (8429), 5072 states have internal predecessors, (8429), 180 states have call successors, (180), 48 states have call predecessors, (180), 67 states have return successors, (243), 187 states have call predecessors, (243), 180 states have call successors, (243) [2021-12-17 19:08:19,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 8852 transitions. [2021-12-17 19:08:19,739 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 8852 transitions. Word has length 189 [2021-12-17 19:08:19,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:19,740 INFO L470 AbstractCegarLoop]: Abstraction has 5300 states and 8852 transitions. [2021-12-17 19:08:19,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:19,740 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 8852 transitions. [2021-12-17 19:08:19,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-17 19:08:19,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:19,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:19,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 19:08:19,743 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:19,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:19,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1653571965, now seen corresponding path program 1 times [2021-12-17 19:08:19,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:19,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719412309] [2021-12-17 19:08:19,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:19,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:19,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:19,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:19,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:19,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:19,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719412309] [2021-12-17 19:08:19,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719412309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:19,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:19,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 19:08:19,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980239487] [2021-12-17 19:08:19,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:19,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 19:08:19,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:19,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 19:08:19,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 19:08:19,891 INFO L87 Difference]: Start difference. First operand 5300 states and 8852 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:23,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:23,231 INFO L93 Difference]: Finished difference Result 14003 states and 22400 transitions. [2021-12-17 19:08:23,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 19:08:23,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2021-12-17 19:08:23,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:23,250 INFO L225 Difference]: With dead ends: 14003 [2021-12-17 19:08:23,250 INFO L226 Difference]: Without dead ends: 10846 [2021-12-17 19:08:23,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 19:08:23,259 INFO L933 BasicCegarLoop]: 5219 mSDtfsCounter, 5986 mSDsluCounter, 13218 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6032 SdHoareTripleChecker+Valid, 18437 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:23,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6032 Valid, 18437 Invalid, 2547 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-17 19:08:23,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10846 states. [2021-12-17 19:08:23,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10846 to 8422. [2021-12-17 19:08:23,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8422 states, 7930 states have (on average 1.6136191677175284) internal successors, (12796), 7978 states have internal predecessors, (12796), 356 states have call successors, (356), 96 states have call predecessors, (356), 134 states have return successors, (475), 355 states have call predecessors, (475), 356 states have call successors, (475) [2021-12-17 19:08:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8422 states to 8422 states and 13627 transitions. [2021-12-17 19:08:23,816 INFO L78 Accepts]: Start accepts. Automaton has 8422 states and 13627 transitions. Word has length 189 [2021-12-17 19:08:23,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:23,816 INFO L470 AbstractCegarLoop]: Abstraction has 8422 states and 13627 transitions. [2021-12-17 19:08:23,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:23,817 INFO L276 IsEmpty]: Start isEmpty. Operand 8422 states and 13627 transitions. [2021-12-17 19:08:23,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-12-17 19:08:23,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:23,829 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:23,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 19:08:23,830 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:23,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:23,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1621612645, now seen corresponding path program 1 times [2021-12-17 19:08:23,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:23,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915134503] [2021-12-17 19:08:23,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:23,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:23,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:23,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:23,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:23,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:24,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:24,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 19:08:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:24,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:08:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:24,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 19:08:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:24,040 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 19:08:24,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:24,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915134503] [2021-12-17 19:08:24,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915134503] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 19:08:24,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084583971] [2021-12-17 19:08:24,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:24,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:08:24,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:08:24,047 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 19:08:24,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 19:08:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:24,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 19:08:24,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 19:08:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-17 19:08:24,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 19:08:24,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084583971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:24,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 19:08:24,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 19:08:24,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846275358] [2021-12-17 19:08:24,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:24,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 19:08:24,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:24,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 19:08:24,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:24,760 INFO L87 Difference]: Start difference. First operand 8422 states and 13627 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:08:25,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:25,766 INFO L93 Difference]: Finished difference Result 20899 states and 33011 transitions. [2021-12-17 19:08:25,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 19:08:25,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 308 [2021-12-17 19:08:25,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:25,799 INFO L225 Difference]: With dead ends: 20899 [2021-12-17 19:08:25,799 INFO L226 Difference]: Without dead ends: 14620 [2021-12-17 19:08:25,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:25,814 INFO L933 BasicCegarLoop]: 4587 mSDtfsCounter, 4461 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 5152 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:25,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4461 Valid, 5152 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 19:08:25,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14620 states. [2021-12-17 19:08:26,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14620 to 14586. [2021-12-17 19:08:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14586 states, 13624 states have (on average 1.5750146799765121) internal successors, (21458), 13718 states have internal predecessors, (21458), 692 states have call successors, (692), 192 states have call predecessors, (692), 268 states have return successors, (923), 683 states have call predecessors, (923), 692 states have call successors, (923) [2021-12-17 19:08:26,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14586 states to 14586 states and 23073 transitions. [2021-12-17 19:08:26,908 INFO L78 Accepts]: Start accepts. Automaton has 14586 states and 23073 transitions. Word has length 308 [2021-12-17 19:08:26,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:26,909 INFO L470 AbstractCegarLoop]: Abstraction has 14586 states and 23073 transitions. [2021-12-17 19:08:26,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:08:26,909 INFO L276 IsEmpty]: Start isEmpty. Operand 14586 states and 23073 transitions. [2021-12-17 19:08:26,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-12-17 19:08:26,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:26,930 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:26,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-17 19:08:27,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-17 19:08:27,144 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:27,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:27,144 INFO L85 PathProgramCache]: Analyzing trace with hash -847915707, now seen corresponding path program 1 times [2021-12-17 19:08:27,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:27,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523649093] [2021-12-17 19:08:27,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:27,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:27,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:27,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:27,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:27,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:27,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:27,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 19:08:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:27,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:08:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:27,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 19:08:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 19:08:27,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:27,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523649093] [2021-12-17 19:08:27,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523649093] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 19:08:27,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369389967] [2021-12-17 19:08:27,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:27,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:08:27,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:08:27,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 19:08:27,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 19:08:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:27,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 19:08:27,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 19:08:27,964 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-17 19:08:27,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 19:08:27,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369389967] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:27,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 19:08:27,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 19:08:27,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388145034] [2021-12-17 19:08:27,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:27,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 19:08:27,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:27,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 19:08:27,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:27,966 INFO L87 Difference]: Start difference. First operand 14586 states and 23073 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:08:29,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:29,845 INFO L93 Difference]: Finished difference Result 39311 states and 61461 transitions. [2021-12-17 19:08:29,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 19:08:29,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 308 [2021-12-17 19:08:29,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:29,899 INFO L225 Difference]: With dead ends: 39311 [2021-12-17 19:08:29,900 INFO L226 Difference]: Without dead ends: 26868 [2021-12-17 19:08:29,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:29,938 INFO L933 BasicCegarLoop]: 4587 mSDtfsCounter, 4449 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4449 SdHoareTripleChecker+Valid, 5152 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:29,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4449 Valid, 5152 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 19:08:29,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26868 states. [2021-12-17 19:08:32,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26868 to 26802. [2021-12-17 19:08:32,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26802 states, 24916 states have (on average 1.5507304543265372) internal successors, (38638), 25102 states have internal predecessors, (38638), 1348 states have call successors, (1348), 384 states have call predecessors, (1348), 536 states have return successors, (1803), 1323 states have call predecessors, (1803), 1348 states have call successors, (1803) [2021-12-17 19:08:32,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26802 states to 26802 states and 41789 transitions. [2021-12-17 19:08:32,180 INFO L78 Accepts]: Start accepts. Automaton has 26802 states and 41789 transitions. Word has length 308 [2021-12-17 19:08:32,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:32,180 INFO L470 AbstractCegarLoop]: Abstraction has 26802 states and 41789 transitions. [2021-12-17 19:08:32,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:08:32,181 INFO L276 IsEmpty]: Start isEmpty. Operand 26802 states and 41789 transitions. [2021-12-17 19:08:32,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-12-17 19:08:32,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:32,218 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:32,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 19:08:32,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-17 19:08:32,443 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:32,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1464851931, now seen corresponding path program 1 times [2021-12-17 19:08:32,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:32,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216570937] [2021-12-17 19:08:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:32,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:32,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:32,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:32,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:32,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:32,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 19:08:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:08:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:32,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 19:08:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 19:08:32,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:32,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216570937] [2021-12-17 19:08:32,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216570937] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 19:08:32,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143203657] [2021-12-17 19:08:32,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:32,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:08:32,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:08:32,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 19:08:32,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 19:08:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:32,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 19:08:32,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 19:08:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-17 19:08:33,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 19:08:33,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143203657] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:33,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 19:08:33,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 19:08:33,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834843670] [2021-12-17 19:08:33,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:33,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 19:08:33,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:33,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 19:08:33,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:33,248 INFO L87 Difference]: Start difference. First operand 26802 states and 41789 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:08:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:37,336 INFO L93 Difference]: Finished difference Result 75799 states and 117817 transitions. [2021-12-17 19:08:37,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 19:08:37,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 308 [2021-12-17 19:08:37,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:37,469 INFO L225 Difference]: With dead ends: 75799 [2021-12-17 19:08:37,470 INFO L226 Difference]: Without dead ends: 51140 [2021-12-17 19:08:37,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:37,531 INFO L933 BasicCegarLoop]: 4587 mSDtfsCounter, 4485 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4485 SdHoareTripleChecker+Valid, 5152 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:37,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4485 Valid, 5152 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 19:08:37,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51140 states. [2021-12-17 19:08:42,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51140 to 51010. [2021-12-17 19:08:42,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51010 states, 47308 states have (on average 1.5369493531749387) internal successors, (72710), 47678 states have internal predecessors, (72710), 2628 states have call successors, (2628), 768 states have call predecessors, (2628), 1072 states have return successors, (3531), 2571 states have call predecessors, (3531), 2628 states have call successors, (3531) [2021-12-17 19:08:42,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51010 states to 51010 states and 78869 transitions. [2021-12-17 19:08:42,382 INFO L78 Accepts]: Start accepts. Automaton has 51010 states and 78869 transitions. Word has length 308 [2021-12-17 19:08:42,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:42,383 INFO L470 AbstractCegarLoop]: Abstraction has 51010 states and 78869 transitions. [2021-12-17 19:08:42,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:08:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 51010 states and 78869 transitions. [2021-12-17 19:08:42,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-12-17 19:08:42,440 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:42,440 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:42,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 19:08:42,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:08:42,641 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:42,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:42,641 INFO L85 PathProgramCache]: Analyzing trace with hash -192053499, now seen corresponding path program 1 times [2021-12-17 19:08:42,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:42,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266048618] [2021-12-17 19:08:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:42,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:42,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:42,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:42,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:42,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:42,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:42,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 19:08:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:42,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:08:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:42,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 19:08:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 19:08:42,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:42,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266048618] [2021-12-17 19:08:42,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266048618] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 19:08:42,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981341020] [2021-12-17 19:08:42,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:42,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:08:42,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:08:42,847 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 19:08:42,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 19:08:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:43,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 19:08:43,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 19:08:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-17 19:08:43,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 19:08:43,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981341020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:43,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 19:08:43,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 19:08:43,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2718083] [2021-12-17 19:08:43,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:43,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 19:08:43,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:43,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 19:08:43,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:43,485 INFO L87 Difference]: Start difference. First operand 51010 states and 78869 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:08:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:51,555 INFO L93 Difference]: Finished difference Result 148103 states and 229441 transitions. [2021-12-17 19:08:51,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 19:08:51,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 308 [2021-12-17 19:08:51,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:51,975 INFO L225 Difference]: With dead ends: 148103 [2021-12-17 19:08:51,976 INFO L226 Difference]: Without dead ends: 99236 [2021-12-17 19:08:52,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:52,049 INFO L933 BasicCegarLoop]: 4587 mSDtfsCounter, 4473 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4473 SdHoareTripleChecker+Valid, 5152 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:52,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4473 Valid, 5152 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 19:08:52,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99236 states. [2021-12-17 19:09:00,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99236 to 98978. [2021-12-17 19:09:00,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98978 states, 91708 states have (on average 1.5296157369040868) internal successors, (140278), 92446 states have internal predecessors, (140278), 5124 states have call successors, (5124), 1536 states have call predecessors, (5124), 2144 states have return successors, (6923), 5003 states have call predecessors, (6923), 5124 states have call successors, (6923) [2021-12-17 19:09:00,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98978 states to 98978 states and 152325 transitions. [2021-12-17 19:09:00,896 INFO L78 Accepts]: Start accepts. Automaton has 98978 states and 152325 transitions. Word has length 308 [2021-12-17 19:09:00,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:09:00,896 INFO L470 AbstractCegarLoop]: Abstraction has 98978 states and 152325 transitions. [2021-12-17 19:09:00,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:09:00,897 INFO L276 IsEmpty]: Start isEmpty. Operand 98978 states and 152325 transitions. [2021-12-17 19:09:01,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-12-17 19:09:01,000 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:09:01,000 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:09:01,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 19:09:01,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:09:01,202 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:09:01,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:09:01,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1122446309, now seen corresponding path program 1 times [2021-12-17 19:09:01,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:09:01,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037869601] [2021-12-17 19:09:01,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:09:01,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:09:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:09:01,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:09:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:09:01,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:09:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:09:01,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:09:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:09:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:09:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:09:01,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:09:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:09:01,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 19:09:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:09:01,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:09:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:09:01,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 19:09:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:09:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 19:09:01,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:09:01,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037869601] [2021-12-17 19:09:01,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037869601] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 19:09:01,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654795953] [2021-12-17 19:09:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:09:01,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:09:01,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:09:01,400 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 19:09:01,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 19:09:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:09:01,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 19:09:01,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 19:09:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-17 19:09:01,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 19:09:01,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654795953] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:09:01,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 19:09:01,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 19:09:01,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127394788] [2021-12-17 19:09:01,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:09:01,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 19:09:01,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:09:01,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 19:09:01,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:09:01,968 INFO L87 Difference]: Start difference. First operand 98978 states and 152325 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)