./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.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 6c0fd06ffbdf36f84b0329229d349f7809a823e5b3b7481a48579e7931c7ae64 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:50:50,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:50:50,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:50:50,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:50:50,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:50:50,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:50:50,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:50:50,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:50:50,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:50:50,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:50:50,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:50:50,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:50:50,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:50:50,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:50:50,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:50:50,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:50:50,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:50:50,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:50:50,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:50:50,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:50:50,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:50:50,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:50:50,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:50:50,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:50:50,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:50:50,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:50:50,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:50:50,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:50:50,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:50:50,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:50:50,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:50:50,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:50:50,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:50:50,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:50:50,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:50:50,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:50:50,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:50:50,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:50:50,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:50:50,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:50:50,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:50:50,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:50:50,880 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:50:50,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:50:50,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:50:50,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:50:50,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:50:50,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:50:50,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:50:50,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:50:50,886 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:50:50,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:50:50,886 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:50:50,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:50:50,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:50:50,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:50:50,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:50:50,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:50:50,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:50:50,887 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:50:50,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:50:50,888 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:50:50,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:50:50,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:50:50,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:50:50,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:50:50,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:50:50,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:50:50,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:50:50,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:50:50,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:50:50,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:50:50,889 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:50:50,889 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:50:50,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:50:50,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:50:50,890 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c0fd06ffbdf36f84b0329229d349f7809a823e5b3b7481a48579e7931c7ae64 [2021-12-14 15:50:51,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:50:51,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:50:51,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:50:51,138 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:50:51,138 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:50:51,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c [2021-12-14 15:50:51,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4240a91f/7781332a14554b9090ea9f18ce960d2f/FLAG83627686a [2021-12-14 15:50:51,922 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:50:51,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c [2021-12-14 15:50:51,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4240a91f/7781332a14554b9090ea9f18ce960d2f/FLAG83627686a [2021-12-14 15:50:52,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4240a91f/7781332a14554b9090ea9f18ce960d2f [2021-12-14 15:50:52,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:50:52,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:50:52,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:50:52,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:50:52,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:50:52,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:50:52" (1/1) ... [2021-12-14 15:50:52,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e1e1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:52, skipping insertion in model container [2021-12-14 15:50:52,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:50:52" (1/1) ... [2021-12-14 15:50:52,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:50:52,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:50:53,586 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c[380593,380606] [2021-12-14 15:50:53,606 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c[383339,383352] [2021-12-14 15:50:53,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:50:53,803 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:50:54,382 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c[380593,380606] [2021-12-14 15:50:54,386 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c[383339,383352] [2021-12-14 15:50:54,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:50:54,476 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:50:54,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:54 WrapperNode [2021-12-14 15:50:54,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:50:54,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:50:54,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:50:54,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:50:54,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:54" (1/1) ... [2021-12-14 15:50:54,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:54" (1/1) ... [2021-12-14 15:50:54,845 INFO L137 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13260 [2021-12-14 15:50:54,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:50:54,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:50:54,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:50:54,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:50:54,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:54" (1/1) ... [2021-12-14 15:50:54,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:54" (1/1) ... [2021-12-14 15:50:54,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:54" (1/1) ... [2021-12-14 15:50:54,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:54" (1/1) ... [2021-12-14 15:50:55,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:54" (1/1) ... [2021-12-14 15:50:55,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:54" (1/1) ... [2021-12-14 15:50:55,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:54" (1/1) ... [2021-12-14 15:50:55,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:50:55,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:50:55,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:50:55,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:50:55,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:54" (1/1) ... [2021-12-14 15:50:55,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:50:55,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:50:55,437 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) [2021-12-14 15:50:55,504 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 [2021-12-14 15:50:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:50:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:50:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:50:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:50:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:50:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:50:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:50:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-14 15:50:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-14 15:50:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:50:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:50:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:50:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:50:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:50:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:50:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:50:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:50:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:50:55,759 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:50:55,770 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:51:00,563 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:51:00,587 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:51:00,587 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-14 15:51:00,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:51:00 BoogieIcfgContainer [2021-12-14 15:51:00,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:51:00,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:51:00,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:51:00,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:51:00,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:50:52" (1/3) ... [2021-12-14 15:51:00,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584ad703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:51:00, skipping insertion in model container [2021-12-14 15:51:00,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:54" (2/3) ... [2021-12-14 15:51:00,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584ad703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:51:00, skipping insertion in model container [2021-12-14 15:51:00,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:51:00" (3/3) ... [2021-12-14 15:51:00,600 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.15.cil.c [2021-12-14 15:51:00,603 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:51:00,603 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:51:00,652 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:51:00,658 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 [2021-12-14 15:51:00,658 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:51:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-14 15:51:00,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:51:00,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:00,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:00,732 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:00,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:00,735 INFO L85 PathProgramCache]: Analyzing trace with hash -842334402, now seen corresponding path program 1 times [2021-12-14 15:51:00,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:00,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948338487] [2021-12-14 15:51:00,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:00,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:00,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:01,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:51:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:01,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:51:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:01,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:51:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:01,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:51:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:01,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:01,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:01,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948338487] [2021-12-14 15:51:01,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948338487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:01,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:01,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:51:01,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698719786] [2021-12-14 15:51:01,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:01,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:51:01,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:01,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:51:01,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:51:01,200 INFO L87 Difference]: Start difference. First operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:02,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:02,767 INFO L93 Difference]: Finished difference Result 5336 states and 9785 transitions. [2021-12-14 15:51:02,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:51:02,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:51:02,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:02,796 INFO L225 Difference]: With dead ends: 5336 [2021-12-14 15:51:02,797 INFO L226 Difference]: Without dead ends: 2681 [2021-12-14 15:51:02,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:51:02,809 INFO L933 BasicCegarLoop]: 4737 mSDtfsCounter, 1117 mSDsluCounter, 12522 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 17259 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:51:02,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 17259 Invalid, 821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:51:02,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-12-14 15:51:02,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2528. [2021-12-14 15:51:02,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8245684464070655) internal successors, (4545), 2494 states have internal predecessors, (4545), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-14 15:51:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4601 transitions. [2021-12-14 15:51:02,934 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4601 transitions. Word has length 190 [2021-12-14 15:51:02,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:02,935 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4601 transitions. [2021-12-14 15:51:02,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:02,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4601 transitions. [2021-12-14 15:51:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:51:02,938 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:02,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:02,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:51:02,939 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:02,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:02,940 INFO L85 PathProgramCache]: Analyzing trace with hash -26287172, now seen corresponding path program 1 times [2021-12-14 15:51:02,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:02,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938103083] [2021-12-14 15:51:02,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:02,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:03,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:03,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:51:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:03,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:51:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:03,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:51:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:03,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:51:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:03,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:03,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938103083] [2021-12-14 15:51:03,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938103083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:03,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:03,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:51:03,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392401023] [2021-12-14 15:51:03,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:03,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:51:03,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:03,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:51:03,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:51:03,107 INFO L87 Difference]: Start difference. First operand 2528 states and 4601 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:04,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:04,425 INFO L93 Difference]: Finished difference Result 3071 states and 5479 transitions. [2021-12-14 15:51:04,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:51:04,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:51:04,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:04,434 INFO L225 Difference]: With dead ends: 3071 [2021-12-14 15:51:04,434 INFO L226 Difference]: Without dead ends: 2681 [2021-12-14 15:51:04,440 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 [2021-12-14 15:51:04,441 INFO L933 BasicCegarLoop]: 4667 mSDtfsCounter, 1103 mSDsluCounter, 12319 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 16986 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:51:04,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 16986 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:51:04,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-12-14 15:51:04,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2528. [2021-12-14 15:51:04,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8241670012043356) internal successors, (4544), 2494 states have internal predecessors, (4544), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-14 15:51:04,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4600 transitions. [2021-12-14 15:51:04,505 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4600 transitions. Word has length 190 [2021-12-14 15:51:04,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:04,505 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4600 transitions. [2021-12-14 15:51:04,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:04,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4600 transitions. [2021-12-14 15:51:04,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:51:04,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:04,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:04,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:51:04,508 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:04,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:04,508 INFO L85 PathProgramCache]: Analyzing trace with hash -674879942, now seen corresponding path program 1 times [2021-12-14 15:51:04,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:04,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389500039] [2021-12-14 15:51:04,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:04,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:04,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:04,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:51:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:04,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:51:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:04,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:51:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:04,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:51:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:04,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:04,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389500039] [2021-12-14 15:51:04,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389500039] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:04,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:04,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:51:04,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992700213] [2021-12-14 15:51:04,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:04,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:51:04,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:04,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:51:04,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:51:04,652 INFO L87 Difference]: Start difference. First operand 2528 states and 4600 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:07,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:07,271 INFO L93 Difference]: Finished difference Result 3626 states and 6383 transitions. [2021-12-14 15:51:07,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:51:07,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:51:07,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:07,282 INFO L225 Difference]: With dead ends: 3626 [2021-12-14 15:51:07,282 INFO L226 Difference]: Without dead ends: 3240 [2021-12-14 15:51:07,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:51:07,286 INFO L933 BasicCegarLoop]: 4723 mSDtfsCounter, 5636 mSDsluCounter, 12966 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5656 SdHoareTripleChecker+Valid, 17689 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:51:07,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5656 Valid, 17689 Invalid, 2227 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [128 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 15:51:07,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2021-12-14 15:51:07,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 2933. [2021-12-14 15:51:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2867 states have (on average 1.795256365538891) internal successors, (5147), 2871 states have internal predecessors, (5147), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2021-12-14 15:51:07,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 5250 transitions. [2021-12-14 15:51:07,358 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 5250 transitions. Word has length 190 [2021-12-14 15:51:07,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:07,359 INFO L470 AbstractCegarLoop]: Abstraction has 2933 states and 5250 transitions. [2021-12-14 15:51:07,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:07,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 5250 transitions. [2021-12-14 15:51:07,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:51:07,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:07,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:07,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:51:07,362 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:07,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:07,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1773060918, now seen corresponding path program 1 times [2021-12-14 15:51:07,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:07,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088096041] [2021-12-14 15:51:07,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:07,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:07,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:07,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:51:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:07,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:51:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:07,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:51:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:07,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:51:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:07,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:07,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:07,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088096041] [2021-12-14 15:51:07,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088096041] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:07,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:07,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:51:07,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127556801] [2021-12-14 15:51:07,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:07,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:51:07,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:07,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:51:07,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:51:07,527 INFO L87 Difference]: Start difference. First operand 2933 states and 5250 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:09,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:09,032 INFO L93 Difference]: Finished difference Result 4053 states and 7079 transitions. [2021-12-14 15:51:09,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:51:09,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:51:09,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:09,047 INFO L225 Difference]: With dead ends: 4053 [2021-12-14 15:51:09,049 INFO L226 Difference]: Without dead ends: 3262 [2021-12-14 15:51:09,052 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 [2021-12-14 15:51:09,059 INFO L933 BasicCegarLoop]: 4664 mSDtfsCounter, 5348 mSDsluCounter, 12677 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5369 SdHoareTripleChecker+Valid, 17341 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:51:09,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5369 Valid, 17341 Invalid, 1558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:51:09,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2021-12-14 15:51:09,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 2933. [2021-12-14 15:51:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2867 states have (on average 1.7945587722357865) internal successors, (5145), 2871 states have internal predecessors, (5145), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2021-12-14 15:51:09,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 5248 transitions. [2021-12-14 15:51:09,145 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 5248 transitions. Word has length 190 [2021-12-14 15:51:09,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:09,151 INFO L470 AbstractCegarLoop]: Abstraction has 2933 states and 5248 transitions. [2021-12-14 15:51:09,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 5248 transitions. [2021-12-14 15:51:09,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:51:09,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:09,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:09,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:51:09,155 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:09,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:09,155 INFO L85 PathProgramCache]: Analyzing trace with hash -150189512, now seen corresponding path program 1 times [2021-12-14 15:51:09,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:09,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66012356] [2021-12-14 15:51:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:09,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:09,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:09,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:51:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:09,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:51:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:09,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:51:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:09,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:51:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:09,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:09,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66012356] [2021-12-14 15:51:09,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66012356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:09,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:09,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:51:09,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265835033] [2021-12-14 15:51:09,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:09,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:51:09,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:09,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:51:09,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:51:09,346 INFO L87 Difference]: Start difference. First operand 2933 states and 5248 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:12,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:12,459 INFO L93 Difference]: Finished difference Result 4607 states and 7968 transitions. [2021-12-14 15:51:12,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:51:12,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:51:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:12,471 INFO L225 Difference]: With dead ends: 4607 [2021-12-14 15:51:12,471 INFO L226 Difference]: Without dead ends: 3816 [2021-12-14 15:51:12,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:51:12,545 INFO L933 BasicCegarLoop]: 5042 mSDtfsCounter, 5665 mSDsluCounter, 17946 mSDsCounter, 0 mSdLazyCounter, 3279 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5685 SdHoareTripleChecker+Valid, 22988 SdHoareTripleChecker+Invalid, 3368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:51:12,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5685 Valid, 22988 Invalid, 3368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 3279 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-14 15:51:12,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states. [2021-12-14 15:51:12,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 3310. [2021-12-14 15:51:12,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3310 states, 3215 states have (on average 1.7701399688958008) internal successors, (5691), 3220 states have internal predecessors, (5691), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2021-12-14 15:51:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3310 states to 3310 states and 5840 transitions. [2021-12-14 15:51:12,625 INFO L78 Accepts]: Start accepts. Automaton has 3310 states and 5840 transitions. Word has length 190 [2021-12-14 15:51:12,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:12,625 INFO L470 AbstractCegarLoop]: Abstraction has 3310 states and 5840 transitions. [2021-12-14 15:51:12,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:12,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3310 states and 5840 transitions. [2021-12-14 15:51:12,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:51:12,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:12,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:12,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:51:12,628 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:12,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:12,629 INFO L85 PathProgramCache]: Analyzing trace with hash 348367290, now seen corresponding path program 1 times [2021-12-14 15:51:12,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:12,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677303697] [2021-12-14 15:51:12,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:12,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:12,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:12,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:51:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:12,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:51:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:12,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:51:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:12,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:51:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:12,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:12,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:12,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677303697] [2021-12-14 15:51:12,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677303697] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:12,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:12,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:51:12,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705898604] [2021-12-14 15:51:12,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:12,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:51:12,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:12,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:51:12,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:51:12,769 INFO L87 Difference]: Start difference. First operand 3310 states and 5840 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:15,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:15,752 INFO L93 Difference]: Finished difference Result 6054 states and 10288 transitions. [2021-12-14 15:51:15,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:51:15,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:51:15,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:15,778 INFO L225 Difference]: With dead ends: 6054 [2021-12-14 15:51:15,778 INFO L226 Difference]: Without dead ends: 4886 [2021-12-14 15:51:15,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:51:15,795 INFO L933 BasicCegarLoop]: 5035 mSDtfsCounter, 5661 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5681 SdHoareTripleChecker+Valid, 22977 SdHoareTripleChecker+Invalid, 3353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:51:15,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5681 Valid, 22977 Invalid, 3353 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 3263 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-14 15:51:15,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4886 states. [2021-12-14 15:51:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4886 to 4067. [2021-12-14 15:51:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4067 states, 3914 states have (on average 1.7342871742462953) internal successors, (6788), 3921 states have internal predecessors, (6788), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-14 15:51:15,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4067 states to 4067 states and 7033 transitions. [2021-12-14 15:51:15,976 INFO L78 Accepts]: Start accepts. Automaton has 4067 states and 7033 transitions. Word has length 190 [2021-12-14 15:51:15,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:15,977 INFO L470 AbstractCegarLoop]: Abstraction has 4067 states and 7033 transitions. [2021-12-14 15:51:15,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:15,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4067 states and 7033 transitions. [2021-12-14 15:51:15,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:51:15,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:15,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:15,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:51:15,981 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:15,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:15,983 INFO L85 PathProgramCache]: Analyzing trace with hash 918639096, now seen corresponding path program 1 times [2021-12-14 15:51:15,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:15,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881619990] [2021-12-14 15:51:15,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:15,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:16,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:16,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:51:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:16,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:51:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:16,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:51:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:16,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:51:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:16,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:16,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:16,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881619990] [2021-12-14 15:51:16,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881619990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:16,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:16,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:51:16,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648290020] [2021-12-14 15:51:16,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:16,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:51:16,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:16,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:51:16,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:51:16,127 INFO L87 Difference]: Start difference. First operand 4067 states and 7033 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:17,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:17,697 INFO L93 Difference]: Finished difference Result 6799 states and 11470 transitions. [2021-12-14 15:51:17,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:51:17,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:51:17,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:17,713 INFO L225 Difference]: With dead ends: 6799 [2021-12-14 15:51:17,714 INFO L226 Difference]: Without dead ends: 4874 [2021-12-14 15:51:17,720 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 [2021-12-14 15:51:17,721 INFO L933 BasicCegarLoop]: 4651 mSDtfsCounter, 5345 mSDsluCounter, 12676 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5366 SdHoareTripleChecker+Valid, 17327 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:51:17,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5366 Valid, 17327 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:51:17,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2021-12-14 15:51:17,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4067. [2021-12-14 15:51:17,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4067 states, 3914 states have (on average 1.733009708737864) internal successors, (6783), 3921 states have internal predecessors, (6783), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-14 15:51:17,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4067 states to 4067 states and 7028 transitions. [2021-12-14 15:51:17,868 INFO L78 Accepts]: Start accepts. Automaton has 4067 states and 7028 transitions. Word has length 190 [2021-12-14 15:51:17,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:17,868 INFO L470 AbstractCegarLoop]: Abstraction has 4067 states and 7028 transitions. [2021-12-14 15:51:17,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:17,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4067 states and 7028 transitions. [2021-12-14 15:51:17,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:51:17,871 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:17,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:17,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:51:17,872 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:17,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:17,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1972459014, now seen corresponding path program 1 times [2021-12-14 15:51:17,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:17,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102231488] [2021-12-14 15:51:17,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:17,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:17,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:17,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:51:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:17,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:51:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:18,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:51:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:51:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:18,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:18,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102231488] [2021-12-14 15:51:18,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102231488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:18,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:18,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:51:18,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249581647] [2021-12-14 15:51:18,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:18,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:51:18,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:18,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:51:18,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:51:18,030 INFO L87 Difference]: Start difference. First operand 4067 states and 7028 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:19,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:19,525 INFO L93 Difference]: Finished difference Result 6793 states and 11443 transitions. [2021-12-14 15:51:19,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:51:19,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:51:19,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:19,541 INFO L225 Difference]: With dead ends: 6793 [2021-12-14 15:51:19,541 INFO L226 Difference]: Without dead ends: 4868 [2021-12-14 15:51:19,546 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 [2021-12-14 15:51:19,547 INFO L933 BasicCegarLoop]: 4603 mSDtfsCounter, 5429 mSDsluCounter, 12675 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5450 SdHoareTripleChecker+Valid, 17278 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:51:19,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5450 Valid, 17278 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:51:19,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4868 states. [2021-12-14 15:51:19,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4067. [2021-12-14 15:51:19,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4067 states, 3914 states have (on average 1.7317322432294329) internal successors, (6778), 3921 states have internal predecessors, (6778), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-14 15:51:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4067 states to 4067 states and 7023 transitions. [2021-12-14 15:51:19,675 INFO L78 Accepts]: Start accepts. Automaton has 4067 states and 7023 transitions. Word has length 190 [2021-12-14 15:51:19,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:19,676 INFO L470 AbstractCegarLoop]: Abstraction has 4067 states and 7023 transitions. [2021-12-14 15:51:19,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 4067 states and 7023 transitions. [2021-12-14 15:51:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:51:19,679 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:19,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:19,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:51:19,679 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:19,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:19,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1536510392, now seen corresponding path program 1 times [2021-12-14 15:51:19,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:19,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727512965] [2021-12-14 15:51:19,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:19,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:19,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:19,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:51:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:19,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:51:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:19,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:51:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:51:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:19,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:19,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727512965] [2021-12-14 15:51:19,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727512965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:19,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:19,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:51:19,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020158742] [2021-12-14 15:51:19,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:19,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:51:19,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:19,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:51:19,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:51:19,823 INFO L87 Difference]: Start difference. First operand 4067 states and 7023 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:21,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:21,127 INFO L93 Difference]: Finished difference Result 6787 states and 11416 transitions. [2021-12-14 15:51:21,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:51:21,128 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:51:21,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:21,138 INFO L225 Difference]: With dead ends: 6787 [2021-12-14 15:51:21,138 INFO L226 Difference]: Without dead ends: 4862 [2021-12-14 15:51:21,145 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 [2021-12-14 15:51:21,146 INFO L933 BasicCegarLoop]: 4643 mSDtfsCounter, 5341 mSDsluCounter, 12676 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5362 SdHoareTripleChecker+Valid, 17319 SdHoareTripleChecker+Invalid, 1512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:51:21,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5362 Valid, 17319 Invalid, 1512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:51:21,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2021-12-14 15:51:21,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4067. [2021-12-14 15:51:21,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4067 states, 3914 states have (on average 1.7304547777210015) internal successors, (6773), 3921 states have internal predecessors, (6773), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-14 15:51:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4067 states to 4067 states and 7018 transitions. [2021-12-14 15:51:21,264 INFO L78 Accepts]: Start accepts. Automaton has 4067 states and 7018 transitions. Word has length 190 [2021-12-14 15:51:21,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:21,264 INFO L470 AbstractCegarLoop]: Abstraction has 4067 states and 7018 transitions. [2021-12-14 15:51:21,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 4067 states and 7018 transitions. [2021-12-14 15:51:21,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:51:21,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:21,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:21,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:51:21,267 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:21,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:21,267 INFO L85 PathProgramCache]: Analyzing trace with hash -2091075014, now seen corresponding path program 1 times [2021-12-14 15:51:21,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:21,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99802377] [2021-12-14 15:51:21,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:21,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:21,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:21,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:51:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:21,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:51:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:21,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:51:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:21,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:51:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:21,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:21,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99802377] [2021-12-14 15:51:21,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99802377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:21,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:21,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:51:21,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419273698] [2021-12-14 15:51:21,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:21,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:51:21,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:21,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:51:21,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:51:21,482 INFO L87 Difference]: Start difference. First operand 4067 states and 7018 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:24,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:24,220 INFO L93 Difference]: Finished difference Result 8829 states and 14633 transitions. [2021-12-14 15:51:24,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:51:24,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:51:24,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:24,238 INFO L225 Difference]: With dead ends: 8829 [2021-12-14 15:51:24,239 INFO L226 Difference]: Without dead ends: 6904 [2021-12-14 15:51:24,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:51:24,246 INFO L933 BasicCegarLoop]: 5012 mSDtfsCounter, 5639 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5659 SdHoareTripleChecker+Valid, 22954 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:51:24,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5659 Valid, 22954 Invalid, 3288 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 15:51:24,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6904 states. [2021-12-14 15:51:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6904 to 5599. [2021-12-14 15:51:24,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5599 states, 5330 states have (on average 1.6842401500938087) internal successors, (8977), 5341 states have internal predecessors, (8977), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2021-12-14 15:51:24,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5599 states to 5599 states and 9420 transitions. [2021-12-14 15:51:24,447 INFO L78 Accepts]: Start accepts. Automaton has 5599 states and 9420 transitions. Word has length 190 [2021-12-14 15:51:24,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:24,448 INFO L470 AbstractCegarLoop]: Abstraction has 5599 states and 9420 transitions. [2021-12-14 15:51:24,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:24,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5599 states and 9420 transitions. [2021-12-14 15:51:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:51:24,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:24,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:24,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:51:24,452 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:24,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:24,453 INFO L85 PathProgramCache]: Analyzing trace with hash 8663416, now seen corresponding path program 1 times [2021-12-14 15:51:24,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:24,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094485112] [2021-12-14 15:51:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:24,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:24,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:24,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:51:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:24,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:51:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:24,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:51:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:24,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:51:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:24,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:24,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094485112] [2021-12-14 15:51:24,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094485112] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:24,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:24,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:51:24,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002919249] [2021-12-14 15:51:24,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:24,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:51:24,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:24,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:51:24,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:51:24,586 INFO L87 Difference]: Start difference. First operand 5599 states and 9420 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:27,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:27,777 INFO L93 Difference]: Finished difference Result 14419 states and 23493 transitions. [2021-12-14 15:51:27,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:51:27,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:51:27,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:27,824 INFO L225 Difference]: With dead ends: 14419 [2021-12-14 15:51:27,824 INFO L226 Difference]: Without dead ends: 10962 [2021-12-14 15:51:27,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:51:27,837 INFO L933 BasicCegarLoop]: 5005 mSDtfsCounter, 5641 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3187 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5661 SdHoareTripleChecker+Valid, 22947 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:51:27,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5661 Valid, 22947 Invalid, 3280 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 3187 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-14 15:51:27,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10962 states. [2021-12-14 15:51:28,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10962 to 8664. [2021-12-14 15:51:28,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8664 states, 8163 states have (on average 1.6394707828004411) internal successors, (13383), 8182 states have internal predecessors, (13383), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2021-12-14 15:51:28,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8664 states to 8664 states and 14240 transitions. [2021-12-14 15:51:28,293 INFO L78 Accepts]: Start accepts. Automaton has 8664 states and 14240 transitions. Word has length 190 [2021-12-14 15:51:28,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:28,295 INFO L470 AbstractCegarLoop]: Abstraction has 8664 states and 14240 transitions. [2021-12-14 15:51:28,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:28,295 INFO L276 IsEmpty]: Start isEmpty. Operand 8664 states and 14240 transitions. [2021-12-14 15:51:28,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:51:28,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:28,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:28,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:51:28,300 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:28,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:28,301 INFO L85 PathProgramCache]: Analyzing trace with hash 353491578, now seen corresponding path program 1 times [2021-12-14 15:51:28,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:28,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756243578] [2021-12-14 15:51:28,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:28,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:28,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:28,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:51:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:28,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:51:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:28,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:51:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:28,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:51:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:28,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:28,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756243578] [2021-12-14 15:51:28,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756243578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:28,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:28,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:51:28,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439508980] [2021-12-14 15:51:28,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:28,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:51:28,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:28,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:51:28,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:51:28,431 INFO L87 Difference]: Start difference. First operand 8664 states and 14240 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:32,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:32,369 INFO L93 Difference]: Finished difference Result 25576 states and 41227 transitions. [2021-12-14 15:51:32,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:51:32,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:51:32,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:32,412 INFO L225 Difference]: With dead ends: 25576 [2021-12-14 15:51:32,412 INFO L226 Difference]: Without dead ends: 19054 [2021-12-14 15:51:32,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:51:32,433 INFO L933 BasicCegarLoop]: 4996 mSDtfsCounter, 5636 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3169 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5656 SdHoareTripleChecker+Valid, 22938 SdHoareTripleChecker+Invalid, 3262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:51:32,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5656 Valid, 22938 Invalid, 3262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 3169 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-14 15:51:32,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19054 states. [2021-12-14 15:51:33,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19054 to 14826. [2021-12-14 15:51:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14826 states, 13861 states have (on average 1.6052954332299256) internal successors, (22251), 13896 states have internal predecessors, (22251), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2021-12-14 15:51:33,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14826 states to 14826 states and 23990 transitions. [2021-12-14 15:51:33,245 INFO L78 Accepts]: Start accepts. Automaton has 14826 states and 23990 transitions. Word has length 190 [2021-12-14 15:51:33,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:33,246 INFO L470 AbstractCegarLoop]: Abstraction has 14826 states and 23990 transitions. [2021-12-14 15:51:33,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:33,247 INFO L276 IsEmpty]: Start isEmpty. Operand 14826 states and 23990 transitions. [2021-12-14 15:51:33,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:51:33,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:33,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:33,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:51:33,254 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:33,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:33,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1415980036, now seen corresponding path program 1 times [2021-12-14 15:51:33,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:33,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363429968] [2021-12-14 15:51:33,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:33,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:33,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:33,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:51:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:33,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:51:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:33,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:51:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:33,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:51:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:33,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:33,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363429968] [2021-12-14 15:51:33,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363429968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:33,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:33,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:51:33,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053898296] [2021-12-14 15:51:33,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:33,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:51:33,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:33,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:51:33,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:51:33,381 INFO L87 Difference]: Start difference. First operand 14826 states and 23990 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:38,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:38,292 INFO L93 Difference]: Finished difference Result 47928 states and 76963 transitions. [2021-12-14 15:51:38,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:51:38,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:51:38,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:38,380 INFO L225 Difference]: With dead ends: 47928 [2021-12-14 15:51:38,380 INFO L226 Difference]: Without dead ends: 35244 [2021-12-14 15:51:38,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:51:38,412 INFO L933 BasicCegarLoop]: 4991 mSDtfsCounter, 5635 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3161 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5655 SdHoareTripleChecker+Valid, 22933 SdHoareTripleChecker+Invalid, 3254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:51:38,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5655 Valid, 22933 Invalid, 3254 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 3161 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-14 15:51:38,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35244 states. [2021-12-14 15:51:39,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35244 to 27179. [2021-12-14 15:51:39,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27179 states, 25286 states have (on average 1.5830499090405759) internal successors, (40029), 25353 states have internal predecessors, (40029), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2021-12-14 15:51:39,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27179 states to 27179 states and 43694 transitions. [2021-12-14 15:51:39,999 INFO L78 Accepts]: Start accepts. Automaton has 27179 states and 43694 transitions. Word has length 190 [2021-12-14 15:51:39,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:39,999 INFO L470 AbstractCegarLoop]: Abstraction has 27179 states and 43694 transitions. [2021-12-14 15:51:39,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:39,999 INFO L276 IsEmpty]: Start isEmpty. Operand 27179 states and 43694 transitions. [2021-12-14 15:51:40,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:51:40,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:40,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:40,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:51:40,013 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:40,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:40,013 INFO L85 PathProgramCache]: Analyzing trace with hash -2027249094, now seen corresponding path program 1 times [2021-12-14 15:51:40,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:40,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393515731] [2021-12-14 15:51:40,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:40,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:40,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:40,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:51:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:40,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:51:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:40,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:51:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:40,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:51:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:40,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:40,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393515731] [2021-12-14 15:51:40,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393515731] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:40,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:40,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:51:40,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78819222] [2021-12-14 15:51:40,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:40,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:51:40,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:40,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:51:40,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:51:40,157 INFO L87 Difference]: Start difference. First operand 27179 states and 43694 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:47,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:47,398 INFO L93 Difference]: Finished difference Result 92631 states and 149033 transitions. [2021-12-14 15:51:47,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:51:47,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:51:47,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:47,597 INFO L225 Difference]: With dead ends: 92631 [2021-12-14 15:51:47,597 INFO L226 Difference]: Without dead ends: 67594 [2021-12-14 15:51:47,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:51:47,665 INFO L933 BasicCegarLoop]: 4986 mSDtfsCounter, 5634 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3153 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5654 SdHoareTripleChecker+Valid, 22928 SdHoareTripleChecker+Invalid, 3246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:51:47,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5654 Valid, 22928 Invalid, 3246 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 3153 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-14 15:51:47,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67594 states. [2021-12-14 15:51:50,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67594 to 51948. [2021-12-14 15:51:50,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51948 states, 48199 states have (on average 1.5701363098819479) internal successors, (75679), 48330 states have internal predecessors, (75679), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2021-12-14 15:51:51,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51948 states to 51948 states and 83682 transitions. [2021-12-14 15:51:51,047 INFO L78 Accepts]: Start accepts. Automaton has 51948 states and 83682 transitions. Word has length 190 [2021-12-14 15:51:51,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:51,047 INFO L470 AbstractCegarLoop]: Abstraction has 51948 states and 83682 transitions. [2021-12-14 15:51:51,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 51948 states and 83682 transitions. [2021-12-14 15:51:51,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:51:51,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:51,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:51,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 15:51:51,067 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:51,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:51,068 INFO L85 PathProgramCache]: Analyzing trace with hash 862526524, now seen corresponding path program 1 times [2021-12-14 15:51:51,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:51,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823657257] [2021-12-14 15:51:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:51,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:51,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:51,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:51:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:51,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:51:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:51,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:51:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:51,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:51:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:51,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:51,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:51,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823657257] [2021-12-14 15:51:51,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823657257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:51,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:51,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:51:51,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795008437] [2021-12-14 15:51:51,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:51,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:51:51,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:51,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:51:51,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:51:51,196 INFO L87 Difference]: Start difference. First operand 51948 states and 83682 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)