./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.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_label43+token_ring.10.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 87df5a94129a3baa1e2e3650ee6bffcda9607641da2006311f5769f81726e25d --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:55:51,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:55:51,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:55:51,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:55:51,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:55:51,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:55:51,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:55:51,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:55:51,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:55:51,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:55:51,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:55:51,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:55:51,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:55:51,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:55:51,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:55:51,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:55:51,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:55:51,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:55:51,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:55:51,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:55:51,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:55:51,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:55:51,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:55:51,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:55:51,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:55:51,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:55:51,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:55:51,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:55:51,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:55:51,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:55:51,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:55:51,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:55:51,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:55:51,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:55:51,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:55:51,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:55:51,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:55:51,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:55:51,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:55:51,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:55:51,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:55:51,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:55:51,942 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:55:51,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:55:51,947 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:55:51,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:55:51,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:55:51,958 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:55:51,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:55:51,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:55:51,959 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:55:51,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:55:51,960 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:55:51,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:55:51,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:55:51,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:55:51,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:55:51,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:55:51,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:55:51,961 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:55:51,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:55:51,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:55:51,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:55:51,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:55:51,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:55:51,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:55:51,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:55:51,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:55:51,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:55:51,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:55:51,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:55:51,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:55:51,964 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:55:51,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:55:51,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:55:51,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:55:51,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87df5a94129a3baa1e2e3650ee6bffcda9607641da2006311f5769f81726e25d [2021-12-16 01:55:52,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:55:52,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:55:52,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:55:52,226 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:55:52,226 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:55:52,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c [2021-12-16 01:55:52,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7376d840/2c7f040b567f424a81078e94b3946a9d/FLAGebe2ee3c4 [2021-12-16 01:55:53,043 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:55:53,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c [2021-12-16 01:55:53,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7376d840/2c7f040b567f424a81078e94b3946a9d/FLAGebe2ee3c4 [2021-12-16 01:55:53,314 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7376d840/2c7f040b567f424a81078e94b3946a9d [2021-12-16 01:55:53,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:55:53,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:55:53,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:55:53,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:55:53,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:55:53,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:55:53" (1/1) ... [2021-12-16 01:55:53,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13fc378e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:53, skipping insertion in model container [2021-12-16 01:55:53,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:55:53" (1/1) ... [2021-12-16 01:55:53,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:55:53,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:55:54,759 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c[381679,381692] [2021-12-16 01:55:54,778 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_label43+token_ring.10.cil-2.c[383339,383352] [2021-12-16 01:55:54,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:55:55,002 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:55:55,646 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_label43+token_ring.10.cil-2.c[381679,381692] [2021-12-16 01:55:55,650 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_label43+token_ring.10.cil-2.c[383339,383352] [2021-12-16 01:55:55,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:55:55,728 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:55:55,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:55 WrapperNode [2021-12-16 01:55:55,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:55:55,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:55:55,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:55:55,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:55:55,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:55" (1/1) ... [2021-12-16 01:55:55,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:55" (1/1) ... [2021-12-16 01:55:56,130 INFO L137 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13083 [2021-12-16 01:55:56,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:55:56,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:55:56,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:55:56,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:55:56,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:55" (1/1) ... [2021-12-16 01:55:56,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:55" (1/1) ... [2021-12-16 01:55:56,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:55" (1/1) ... [2021-12-16 01:55:56,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:55" (1/1) ... [2021-12-16 01:55:56,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:55" (1/1) ... [2021-12-16 01:55:56,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:55" (1/1) ... [2021-12-16 01:55:56,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:55" (1/1) ... [2021-12-16 01:55:56,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:55:56,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:55:56,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:55:56,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:55:56,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:55" (1/1) ... [2021-12-16 01:55:56,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:55:56,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:55:56,709 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) [2021-12-16 01:55:56,811 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 [2021-12-16 01:55:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:55:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-16 01:55:56,839 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-16 01:55:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 01:55:56,840 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 01:55:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-16 01:55:56,840 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-16 01:55:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-16 01:55:56,840 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-16 01:55:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-16 01:55:56,840 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-16 01:55:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-16 01:55:56,841 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-16 01:55:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:55:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:55:56,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:55:57,043 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:55:57,045 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:56:02,100 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:56:02,139 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:56:02,139 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-16 01:56:02,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:56:02 BoogieIcfgContainer [2021-12-16 01:56:02,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:56:02,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:56:02,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:56:02,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:56:02,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:55:53" (1/3) ... [2021-12-16 01:56:02,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd2d23d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:56:02, skipping insertion in model container [2021-12-16 01:56:02,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:55" (2/3) ... [2021-12-16 01:56:02,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd2d23d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:56:02, skipping insertion in model container [2021-12-16 01:56:02,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:56:02" (3/3) ... [2021-12-16 01:56:02,165 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.10.cil-2.c [2021-12-16 01:56:02,169 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:56:02,169 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 01:56:02,226 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:56:02,234 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 [2021-12-16 01:56:02,234 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 01:56:02,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-16 01:56:02,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 01:56:02,303 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:02,304 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] [2021-12-16 01:56:02,304 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:02,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:02,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1879597445, now seen corresponding path program 1 times [2021-12-16 01:56:02,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:02,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690284799] [2021-12-16 01:56:02,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:02,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:56:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 01:56:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 01:56:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 01:56:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:02,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:02,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690284799] [2021-12-16 01:56:02,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690284799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:02,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:02,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:56:02,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903006307] [2021-12-16 01:56:02,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:02,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:56:02,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:02,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:56:02,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:56:02,835 INFO L87 Difference]: Start difference. First operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:04,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:04,010 INFO L93 Difference]: Finished difference Result 5140 states and 9446 transitions. [2021-12-16 01:56:04,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:56:04,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (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 156 [2021-12-16 01:56:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:04,036 INFO L225 Difference]: With dead ends: 5140 [2021-12-16 01:56:04,036 INFO L226 Difference]: Without dead ends: 2568 [2021-12-16 01:56:04,045 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 [2021-12-16 01:56:04,048 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 882 mSDsluCounter, 12431 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 17020 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:04,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 17020 Invalid, 656 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:56:04,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2021-12-16 01:56:04,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2448. [2021-12-16 01:56:04,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.830298013245033) internal successors, (4422), 2418 states have internal predecessors, (4422), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-16 01:56:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4470 transitions. [2021-12-16 01:56:04,182 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4470 transitions. Word has length 156 [2021-12-16 01:56:04,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:04,183 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 4470 transitions. [2021-12-16 01:56:04,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:04,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4470 transitions. [2021-12-16 01:56:04,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 01:56:04,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:04,192 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] [2021-12-16 01:56:04,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:56:04,193 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:04,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:04,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1988815353, now seen corresponding path program 1 times [2021-12-16 01:56:04,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:04,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431257887] [2021-12-16 01:56:04,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:04,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:04,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:04,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:56:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 01:56:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:04,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 01:56:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:04,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 01:56:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:04,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:04,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431257887] [2021-12-16 01:56:04,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431257887] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:04,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:04,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:04,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657665222] [2021-12-16 01:56:04,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:04,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:04,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:04,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:04,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:04,356 INFO L87 Difference]: Start difference. First operand 2448 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:07,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:07,404 INFO L93 Difference]: Finished difference Result 3341 states and 5922 transitions. [2021-12-16 01:56:07,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:56:07,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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 156 [2021-12-16 01:56:07,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:07,415 INFO L225 Difference]: With dead ends: 3341 [2021-12-16 01:56:07,416 INFO L226 Difference]: Without dead ends: 3032 [2021-12-16 01:56:07,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:56:07,418 INFO L933 BasicCegarLoop]: 4828 mSDtfsCounter, 5220 mSDsluCounter, 17526 mSDsCounter, 0 mSdLazyCounter, 2728 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5237 SdHoareTripleChecker+Valid, 22354 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:07,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5237 Valid, 22354 Invalid, 2805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2728 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-16 01:56:07,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-12-16 01:56:07,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2775. [2021-12-16 01:56:07,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2714 states have (on average 1.8043478260869565) internal successors, (4897), 2718 states have internal predecessors, (4897), 45 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2021-12-16 01:56:07,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4994 transitions. [2021-12-16 01:56:07,482 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4994 transitions. Word has length 156 [2021-12-16 01:56:07,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:07,483 INFO L470 AbstractCegarLoop]: Abstraction has 2775 states and 4994 transitions. [2021-12-16 01:56:07,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:07,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4994 transitions. [2021-12-16 01:56:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 01:56:07,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:07,486 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] [2021-12-16 01:56:07,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:56:07,486 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:07,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:07,487 INFO L85 PathProgramCache]: Analyzing trace with hash 371374903, now seen corresponding path program 1 times [2021-12-16 01:56:07,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:07,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281690089] [2021-12-16 01:56:07,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:07,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:07,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:07,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:56:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:07,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 01:56:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:07,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 01:56:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:07,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 01:56:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:07,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:07,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281690089] [2021-12-16 01:56:07,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281690089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:07,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:07,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:07,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856712762] [2021-12-16 01:56:07,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:07,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:07,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:07,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:07,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:07,601 INFO L87 Difference]: Start difference. First operand 2775 states and 4994 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:10,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:10,123 INFO L93 Difference]: Finished difference Result 4476 states and 7734 transitions. [2021-12-16 01:56:10,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:56:10,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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 156 [2021-12-16 01:56:10,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:10,137 INFO L225 Difference]: With dead ends: 4476 [2021-12-16 01:56:10,138 INFO L226 Difference]: Without dead ends: 3842 [2021-12-16 01:56:10,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:56:10,141 INFO L933 BasicCegarLoop]: 4755 mSDtfsCounter, 5260 mSDsluCounter, 17435 mSDsCounter, 0 mSdLazyCounter, 2596 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5277 SdHoareTripleChecker+Valid, 22190 SdHoareTripleChecker+Invalid, 2680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:10,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5277 Valid, 22190 Invalid, 2680 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2596 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-16 01:56:10,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2021-12-16 01:56:10,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3377. [2021-12-16 01:56:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 3264 states have (on average 1.7634803921568627) internal successors, (5756), 3270 states have internal predecessors, (5756), 83 states have call successors, (83), 24 states have call predecessors, (83), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2021-12-16 01:56:10,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 5939 transitions. [2021-12-16 01:56:10,274 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 5939 transitions. Word has length 156 [2021-12-16 01:56:10,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:10,275 INFO L470 AbstractCegarLoop]: Abstraction has 3377 states and 5939 transitions. [2021-12-16 01:56:10,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 5939 transitions. [2021-12-16 01:56:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 01:56:10,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:10,278 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] [2021-12-16 01:56:10,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:56:10,279 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:10,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:10,280 INFO L85 PathProgramCache]: Analyzing trace with hash 734841401, now seen corresponding path program 1 times [2021-12-16 01:56:10,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:10,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361799843] [2021-12-16 01:56:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:10,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:10,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:10,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:56:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:10,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 01:56:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:10,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 01:56:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 01:56:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:10,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:10,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361799843] [2021-12-16 01:56:10,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361799843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:10,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:10,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:10,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602829692] [2021-12-16 01:56:10,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:10,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:10,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:10,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:10,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:10,418 INFO L87 Difference]: Start difference. First operand 3377 states and 5939 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:13,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:13,195 INFO L93 Difference]: Finished difference Result 6696 states and 11267 transitions. [2021-12-16 01:56:13,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:56:13,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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 156 [2021-12-16 01:56:13,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:13,222 INFO L225 Difference]: With dead ends: 6696 [2021-12-16 01:56:13,223 INFO L226 Difference]: Without dead ends: 5460 [2021-12-16 01:56:13,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:56:13,242 INFO L933 BasicCegarLoop]: 4819 mSDtfsCounter, 5219 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2732 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22337 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:13,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5236 Valid, 22337 Invalid, 2812 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2732 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-16 01:56:13,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2021-12-16 01:56:13,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 4583. [2021-12-16 01:56:13,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4583 states, 4366 states have (on average 1.712322491983509) internal successors, (7476), 4376 states have internal predecessors, (7476), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2021-12-16 01:56:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4583 states to 4583 states and 7837 transitions. [2021-12-16 01:56:13,437 INFO L78 Accepts]: Start accepts. Automaton has 4583 states and 7837 transitions. Word has length 156 [2021-12-16 01:56:13,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:13,438 INFO L470 AbstractCegarLoop]: Abstraction has 4583 states and 7837 transitions. [2021-12-16 01:56:13,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:13,438 INFO L276 IsEmpty]: Start isEmpty. Operand 4583 states and 7837 transitions. [2021-12-16 01:56:13,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 01:56:13,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:13,442 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] [2021-12-16 01:56:13,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:56:13,442 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:13,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:13,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1023660791, now seen corresponding path program 1 times [2021-12-16 01:56:13,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:13,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343417062] [2021-12-16 01:56:13,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:13,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:13,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:13,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:56:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:13,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 01:56:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:13,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 01:56:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:13,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 01:56:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:13,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:13,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343417062] [2021-12-16 01:56:13,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343417062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:13,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:13,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:13,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789936680] [2021-12-16 01:56:13,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:13,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:13,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:13,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:13,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:13,565 INFO L87 Difference]: Start difference. First operand 4583 states and 7837 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:16,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:16,301 INFO L93 Difference]: Finished difference Result 11134 states and 18347 transitions. [2021-12-16 01:56:16,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:56:16,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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 156 [2021-12-16 01:56:16,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:16,365 INFO L225 Difference]: With dead ends: 11134 [2021-12-16 01:56:16,371 INFO L226 Difference]: Without dead ends: 8692 [2021-12-16 01:56:16,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:56:16,399 INFO L933 BasicCegarLoop]: 4816 mSDtfsCounter, 5219 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2726 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22334 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:16,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5236 Valid, 22334 Invalid, 2806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2726 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-16 01:56:16,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8692 states. [2021-12-16 01:56:16,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8692 to 7001. [2021-12-16 01:56:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6576 states have (on average 1.6611922141119222) internal successors, (10924), 6594 states have internal predecessors, (10924), 311 states have call successors, (311), 96 states have call predecessors, (311), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2021-12-16 01:56:16,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11659 transitions. [2021-12-16 01:56:16,854 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11659 transitions. Word has length 156 [2021-12-16 01:56:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:16,854 INFO L470 AbstractCegarLoop]: Abstraction has 7001 states and 11659 transitions. [2021-12-16 01:56:16,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:16,856 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11659 transitions. [2021-12-16 01:56:16,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 01:56:16,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:16,860 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] [2021-12-16 01:56:16,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:56:16,860 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:16,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:16,861 INFO L85 PathProgramCache]: Analyzing trace with hash 478788217, now seen corresponding path program 1 times [2021-12-16 01:56:16,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:16,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713765130] [2021-12-16 01:56:16,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:16,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:16,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:16,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:56:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:16,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 01:56:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:16,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 01:56:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:17,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 01:56:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:17,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:17,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713765130] [2021-12-16 01:56:17,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713765130] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:17,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:17,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:17,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958514480] [2021-12-16 01:56:17,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:17,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:17,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:17,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:17,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:17,008 INFO L87 Difference]: Start difference. First operand 7001 states and 11659 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:19,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:19,762 INFO L93 Difference]: Finished difference Result 20008 states and 32563 transitions. [2021-12-16 01:56:19,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:56:19,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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 156 [2021-12-16 01:56:19,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:19,832 INFO L225 Difference]: With dead ends: 20008 [2021-12-16 01:56:19,832 INFO L226 Difference]: Without dead ends: 15148 [2021-12-16 01:56:19,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:56:19,854 INFO L933 BasicCegarLoop]: 4813 mSDtfsCounter, 5219 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22331 SdHoareTripleChecker+Invalid, 2800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:19,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5236 Valid, 22331 Invalid, 2800 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2720 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 01:56:19,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15148 states. [2021-12-16 01:56:20,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 11851. [2021-12-16 01:56:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11851 states, 11010 states have (on average 1.620345140781108) internal successors, (17840), 11044 states have internal predecessors, (17840), 615 states have call successors, (615), 192 states have call predecessors, (615), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2021-12-16 01:56:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11851 states to 11851 states and 19377 transitions. [2021-12-16 01:56:20,393 INFO L78 Accepts]: Start accepts. Automaton has 11851 states and 19377 transitions. Word has length 156 [2021-12-16 01:56:20,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:20,394 INFO L470 AbstractCegarLoop]: Abstraction has 11851 states and 19377 transitions. [2021-12-16 01:56:20,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:20,395 INFO L276 IsEmpty]: Start isEmpty. Operand 11851 states and 19377 transitions. [2021-12-16 01:56:20,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 01:56:20,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:20,403 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] [2021-12-16 01:56:20,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 01:56:20,403 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:20,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:20,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1153948343, now seen corresponding path program 1 times [2021-12-16 01:56:20,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:20,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973240840] [2021-12-16 01:56:20,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:20,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:20,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:56:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:20,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 01:56:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:20,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 01:56:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:20,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 01:56:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:20,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:20,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973240840] [2021-12-16 01:56:20,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973240840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:20,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:20,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:20,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667349644] [2021-12-16 01:56:20,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:20,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:20,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:20,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:20,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:20,543 INFO L87 Difference]: Start difference. First operand 11851 states and 19377 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:23,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:23,969 INFO L93 Difference]: Finished difference Result 37754 states and 61183 transitions. [2021-12-16 01:56:23,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:56:23,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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 156 [2021-12-16 01:56:23,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:24,057 INFO L225 Difference]: With dead ends: 37754 [2021-12-16 01:56:24,057 INFO L226 Difference]: Without dead ends: 28044 [2021-12-16 01:56:24,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:56:24,093 INFO L933 BasicCegarLoop]: 4810 mSDtfsCounter, 5219 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22328 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:24,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5236 Valid, 22328 Invalid, 2794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-16 01:56:24,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28044 states. [2021-12-16 01:56:24,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28044 to 21581. [2021-12-16 01:56:24,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.593128390596745) internal successors, (31716), 19974 states have internal predecessors, (31716), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2021-12-16 01:56:25,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 35019 transitions. [2021-12-16 01:56:25,045 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 35019 transitions. Word has length 156 [2021-12-16 01:56:25,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:25,045 INFO L470 AbstractCegarLoop]: Abstraction has 21581 states and 35019 transitions. [2021-12-16 01:56:25,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:25,046 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 35019 transitions. [2021-12-16 01:56:25,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 01:56:25,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:25,060 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] [2021-12-16 01:56:25,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:56:25,061 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:25,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:25,061 INFO L85 PathProgramCache]: Analyzing trace with hash 205896377, now seen corresponding path program 1 times [2021-12-16 01:56:25,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:25,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878563042] [2021-12-16 01:56:25,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:25,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:25,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:25,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:56:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:25,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 01:56:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:25,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 01:56:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:25,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 01:56:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:25,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:25,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:25,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878563042] [2021-12-16 01:56:25,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878563042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:25,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:25,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:25,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230977666] [2021-12-16 01:56:25,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:25,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:25,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:25,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:25,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:25,202 INFO L87 Difference]: Start difference. First operand 21581 states and 35019 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:27,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:27,593 INFO L93 Difference]: Finished difference Result 47941 states and 78380 transitions. [2021-12-16 01:56:27,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:56:27,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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 156 [2021-12-16 01:56:27,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:27,674 INFO L225 Difference]: With dead ends: 47941 [2021-12-16 01:56:27,674 INFO L226 Difference]: Without dead ends: 28499 [2021-12-16 01:56:27,714 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 [2021-12-16 01:56:27,715 INFO L933 BasicCegarLoop]: 4496 mSDtfsCounter, 4916 mSDsluCounter, 16636 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4934 SdHoareTripleChecker+Valid, 21132 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:27,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4934 Valid, 21132 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 01:56:27,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28499 states. [2021-12-16 01:56:28,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28499 to 21581. [2021-12-16 01:56:28,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.5898633715089412) internal successors, (31651), 19974 states have internal predecessors, (31651), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2021-12-16 01:56:28,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 34954 transitions. [2021-12-16 01:56:28,738 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 34954 transitions. Word has length 156 [2021-12-16 01:56:28,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:28,738 INFO L470 AbstractCegarLoop]: Abstraction has 21581 states and 34954 transitions. [2021-12-16 01:56:28,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:28,739 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 34954 transitions. [2021-12-16 01:56:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 01:56:28,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:28,747 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] [2021-12-16 01:56:28,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:56:28,748 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:28,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:28,748 INFO L85 PathProgramCache]: Analyzing trace with hash -378875273, now seen corresponding path program 1 times [2021-12-16 01:56:28,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:28,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856633062] [2021-12-16 01:56:28,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:28,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:28,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:28,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:56:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:28,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 01:56:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:28,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 01:56:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:28,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 01:56:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:28,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:28,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856633062] [2021-12-16 01:56:28,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856633062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:28,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:28,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:28,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168341698] [2021-12-16 01:56:28,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:28,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:28,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:28,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:28,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:28,871 INFO L87 Difference]: Start difference. First operand 21581 states and 34954 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:32,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:32,930 INFO L93 Difference]: Finished difference Result 73117 states and 118447 transitions. [2021-12-16 01:56:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:56:32,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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 156 [2021-12-16 01:56:32,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:33,092 INFO L225 Difference]: With dead ends: 73117 [2021-12-16 01:56:33,092 INFO L226 Difference]: Without dead ends: 53677 [2021-12-16 01:56:33,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:56:33,145 INFO L933 BasicCegarLoop]: 4794 mSDtfsCounter, 5247 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5264 SdHoareTripleChecker+Valid, 22312 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:33,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5264 Valid, 22312 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2610 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-16 01:56:33,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53677 states. [2021-12-16 01:56:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53677 to 41230. [2021-12-16 01:56:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41230 states, 37893 states have (on average 1.5734304488955744) internal successors, (59622), 38023 states have internal predecessors, (59622), 2439 states have call successors, (2439), 768 states have call predecessors, (2439), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2021-12-16 01:56:34,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41230 states to 41230 states and 66943 transitions. [2021-12-16 01:56:34,828 INFO L78 Accepts]: Start accepts. Automaton has 41230 states and 66943 transitions. Word has length 156 [2021-12-16 01:56:34,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:34,829 INFO L470 AbstractCegarLoop]: Abstraction has 41230 states and 66943 transitions. [2021-12-16 01:56:34,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:34,829 INFO L276 IsEmpty]: Start isEmpty. Operand 41230 states and 66943 transitions. [2021-12-16 01:56:34,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 01:56:34,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:34,848 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] [2021-12-16 01:56:34,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:56:34,848 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:34,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:34,851 INFO L85 PathProgramCache]: Analyzing trace with hash -808533579, now seen corresponding path program 1 times [2021-12-16 01:56:34,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:34,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518013028] [2021-12-16 01:56:34,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:34,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:34,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:34,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:56:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:34,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 01:56:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:34,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 01:56:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:34,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 01:56:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:34,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:34,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518013028] [2021-12-16 01:56:34,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518013028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:34,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:34,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:34,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101756194] [2021-12-16 01:56:34,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:34,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:34,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:34,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:34,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:34,962 INFO L87 Difference]: Start difference. First operand 41230 states and 66943 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:38,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:38,475 INFO L93 Difference]: Finished difference Result 93512 states and 153929 transitions. [2021-12-16 01:56:38,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:56:38,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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 156 [2021-12-16 01:56:38,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:38,686 INFO L225 Difference]: With dead ends: 93512 [2021-12-16 01:56:38,686 INFO L226 Difference]: Without dead ends: 54421 [2021-12-16 01:56:38,776 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 [2021-12-16 01:56:38,777 INFO L933 BasicCegarLoop]: 4463 mSDtfsCounter, 5101 mSDsluCounter, 12509 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5119 SdHoareTripleChecker+Valid, 16972 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:38,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5119 Valid, 16972 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:56:38,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54421 states. [2021-12-16 01:56:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54421 to 41230. [2021-12-16 01:56:40,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41230 states, 37893 states have (on average 1.5700261261974506) internal successors, (59493), 38023 states have internal predecessors, (59493), 2439 states have call successors, (2439), 768 states have call predecessors, (2439), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2021-12-16 01:56:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41230 states to 41230 states and 66814 transitions. [2021-12-16 01:56:40,693 INFO L78 Accepts]: Start accepts. Automaton has 41230 states and 66814 transitions. Word has length 156 [2021-12-16 01:56:40,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:40,694 INFO L470 AbstractCegarLoop]: Abstraction has 41230 states and 66814 transitions. [2021-12-16 01:56:40,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:40,694 INFO L276 IsEmpty]: Start isEmpty. Operand 41230 states and 66814 transitions. [2021-12-16 01:56:40,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 01:56:40,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:40,719 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] [2021-12-16 01:56:40,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:56:40,719 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:40,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1515130185, now seen corresponding path program 1 times [2021-12-16 01:56:40,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:40,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777824504] [2021-12-16 01:56:40,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:40,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:40,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:40,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:56:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:40,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 01:56:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:40,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 01:56:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:40,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 01:56:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:40,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:40,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777824504] [2021-12-16 01:56:40,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777824504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:40,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:40,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:40,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67820335] [2021-12-16 01:56:40,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:40,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:40,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:40,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:40,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:40,833 INFO L87 Difference]: Start difference. First operand 41230 states and 66814 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:44,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:44,548 INFO L93 Difference]: Finished difference Result 93384 states and 153287 transitions. [2021-12-16 01:56:44,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:56:44,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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 156 [2021-12-16 01:56:44,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:44,835 INFO L225 Difference]: With dead ends: 93384 [2021-12-16 01:56:44,835 INFO L226 Difference]: Without dead ends: 54293 [2021-12-16 01:56:44,949 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 [2021-12-16 01:56:44,950 INFO L933 BasicCegarLoop]: 4483 mSDtfsCounter, 5051 mSDsluCounter, 12508 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5069 SdHoareTripleChecker+Valid, 16991 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:44,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5069 Valid, 16991 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:56:44,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54293 states. [2021-12-16 01:56:47,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54293 to 41230. [2021-12-16 01:56:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41230 states, 37893 states have (on average 1.5666218034993271) internal successors, (59364), 38023 states have internal predecessors, (59364), 2439 states have call successors, (2439), 768 states have call predecessors, (2439), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2021-12-16 01:56:47,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41230 states to 41230 states and 66685 transitions. [2021-12-16 01:56:47,184 INFO L78 Accepts]: Start accepts. Automaton has 41230 states and 66685 transitions. Word has length 156 [2021-12-16 01:56:47,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:47,186 INFO L470 AbstractCegarLoop]: Abstraction has 41230 states and 66685 transitions. [2021-12-16 01:56:47,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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) [2021-12-16 01:56:47,186 INFO L276 IsEmpty]: Start isEmpty. Operand 41230 states and 66685 transitions. [2021-12-16 01:56:47,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 01:56:47,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:47,244 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] [2021-12-16 01:56:47,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:56:47,244 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:47,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:47,245 INFO L85 PathProgramCache]: Analyzing trace with hash -568092299, now seen corresponding path program 1 times [2021-12-16 01:56:47,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:47,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63333628] [2021-12-16 01:56:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:47,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:47,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:56:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:47,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 01:56:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:47,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 01:56:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:47,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 01:56:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:47,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:47,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63333628] [2021-12-16 01:56:47,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63333628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:47,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:47,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:47,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321342962] [2021-12-16 01:56:47,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:47,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:47,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:47,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:47,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:47,349 INFO L87 Difference]: Start difference. First operand 41230 states and 66685 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (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)