./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a629e5533750136bdc4ecf4cf9ae4f163f3dcd9918add7f5bb2c2e476f05d0e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:32:14,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:32:14,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:32:14,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:32:14,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:32:14,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:32:14,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:32:14,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:32:14,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:32:14,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:32:14,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:32:14,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:32:14,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:32:14,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:32:14,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:32:14,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:32:14,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:32:14,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:32:14,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:32:14,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:32:14,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:32:14,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:32:14,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:32:14,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:32:14,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:32:14,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:32:14,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:32:14,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:32:14,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:32:14,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:32:14,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:32:14,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:32:14,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:32:14,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:32:14,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:32:14,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:32:14,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:32:14,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:32:14,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:32:14,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:32:14,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:32:14,846 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:32:14,868 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:32:14,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:32:14,871 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:32:14,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:32:14,872 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:32:14,872 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:32:14,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:32:14,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:32:14,873 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:32:14,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:32:14,873 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:32:14,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:32:14,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:32:14,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:32:14,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:32:14,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:32:14,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:32:14,874 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:32:14,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:32:14,875 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:32:14,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:32:14,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:32:14,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:32:14,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:32:14,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:32:14,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:32:14,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:32:14,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:32:14,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:32:14,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:32:14,876 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:32:14,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:32:14,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:32:14,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:32:14,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a629e5533750136bdc4ecf4cf9ae4f163f3dcd9918add7f5bb2c2e476f05d0e [2021-12-22 12:32:15,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:32:15,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:32:15,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:32:15,094 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:32:15,094 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:32:15,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-2.c [2021-12-22 12:32:15,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e18f208f/5c20a85fde1048b1a0226d71b7ad15ff/FLAGd66e70250 [2021-12-22 12:32:15,835 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:32:15,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-2.c [2021-12-22 12:32:15,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e18f208f/5c20a85fde1048b1a0226d71b7ad15ff/FLAGd66e70250 [2021-12-22 12:32:16,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e18f208f/5c20a85fde1048b1a0226d71b7ad15ff [2021-12-22 12:32:16,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:32:16,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:32:16,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:32:16,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:32:16,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:32:16,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:32:16" (1/1) ... [2021-12-22 12:32:16,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c23e9db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:32:16, skipping insertion in model container [2021-12-22 12:32:16,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:32:16" (1/1) ... [2021-12-22 12:32:16,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:32:16,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:32:17,558 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-2.c[378560,378573] [2021-12-22 12:32:17,581 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-2.c[383339,383352] [2021-12-22 12:32:17,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:32:17,743 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:32:18,323 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-2.c[378560,378573] [2021-12-22 12:32:18,329 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.04.cil-2.c[383339,383352] [2021-12-22 12:32:18,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:32:18,391 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:32:18,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:32:18 WrapperNode [2021-12-22 12:32:18,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:32:18,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:32:18,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:32:18,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:32:18,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:32:18" (1/1) ... [2021-12-22 12:32:18,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:32:18" (1/1) ... [2021-12-22 12:32:18,757 INFO L137 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12740 [2021-12-22 12:32:18,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:32:18,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:32:18,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:32:18,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:32:18,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:32:18" (1/1) ... [2021-12-22 12:32:18,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:32:18" (1/1) ... [2021-12-22 12:32:18,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:32:18" (1/1) ... [2021-12-22 12:32:18,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:32:18" (1/1) ... [2021-12-22 12:32:19,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:32:18" (1/1) ... [2021-12-22 12:32:19,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:32:18" (1/1) ... [2021-12-22 12:32:19,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:32:18" (1/1) ... [2021-12-22 12:32:19,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:32:19,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:32:19,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:32:19,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:32:19,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:32:18" (1/1) ... [2021-12-22 12:32:19,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:32:19,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:32:19,304 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) [2021-12-22 12:32:19,375 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 [2021-12-22 12:32:19,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:32:19,410 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-22 12:32:19,410 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-22 12:32:19,410 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 12:32:19,410 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 12:32:19,410 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-22 12:32:19,410 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-22 12:32:19,410 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-22 12:32:19,410 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-22 12:32:19,411 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-22 12:32:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-22 12:32:19,411 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-22 12:32:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-22 12:32:19,411 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-22 12:32:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-22 12:32:19,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:32:19,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:32:19,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:32:19,544 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:32:19,552 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:32:24,124 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:32:24,143 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:32:24,143 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-22 12:32:24,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:32:24 BoogieIcfgContainer [2021-12-22 12:32:24,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:32:24,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:32:24,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:32:24,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:32:24,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:32:16" (1/3) ... [2021-12-22 12:32:24,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d9b3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:32:24, skipping insertion in model container [2021-12-22 12:32:24,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:32:18" (2/3) ... [2021-12-22 12:32:24,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d9b3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:32:24, skipping insertion in model container [2021-12-22 12:32:24,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:32:24" (3/3) ... [2021-12-22 12:32:24,153 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.04.cil-2.c [2021-12-22 12:32:24,156 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:32:24,156 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:32:24,196 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:32:24,201 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 [2021-12-22 12:32:24,201 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:32:24,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 2373 states, 2343 states have (on average 1.8544600938967135) internal successors, (4345), 2348 states have internal predecessors, (4345), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-22 12:32:24,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 12:32:24,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:32:24,248 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] [2021-12-22 12:32:24,248 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:32:24,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:32:24,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1085362317, now seen corresponding path program 1 times [2021-12-22 12:32:24,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:32:24,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797931108] [2021-12-22 12:32:24,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:32:24,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:32:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:24,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:32:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:24,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:32:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:24,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:32:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:24,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:32:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:24,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:32:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:24,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:32:24,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:32:24,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797931108] [2021-12-22 12:32:24,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797931108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:32:24,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:32:24,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:32:24,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228842637] [2021-12-22 12:32:24,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:32:24,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:32:24,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:32:24,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:32:24,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:32:24,533 INFO L87 Difference]: Start difference. First operand has 2373 states, 2343 states have (on average 1.8544600938967135) internal successors, (4345), 2348 states have internal predecessors, (4345), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-12-22 12:32:25,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:32:25,119 INFO L93 Difference]: Finished difference Result 4793 states and 8852 transitions. [2021-12-22 12:32:25,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:32:25,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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 91 [2021-12-22 12:32:25,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:32:25,137 INFO L225 Difference]: With dead ends: 4793 [2021-12-22 12:32:25,138 INFO L226 Difference]: Without dead ends: 2359 [2021-12-22 12:32:25,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:32:25,148 INFO L933 BasicCegarLoop]: 4327 mSDtfsCounter, 448 mSDsluCounter, 12287 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 16614 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:32:25,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 16614 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 12:32:25,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-12-22 12:32:25,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2305. [2021-12-22 12:32:25,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 2277 states have (on average 1.8436539306104522) internal successors, (4198), 2280 states have internal predecessors, (4198), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-22 12:32:25,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 4236 transitions. [2021-12-22 12:32:25,237 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 4236 transitions. Word has length 91 [2021-12-22 12:32:25,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:32:25,237 INFO L470 AbstractCegarLoop]: Abstraction has 2305 states and 4236 transitions. [2021-12-22 12:32:25,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-12-22 12:32:25,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 4236 transitions. [2021-12-22 12:32:25,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 12:32:25,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:32:25,241 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] [2021-12-22 12:32:25,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:32:25,242 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:32:25,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:32:25,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1642847029, now seen corresponding path program 1 times [2021-12-22 12:32:25,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:32:25,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376813167] [2021-12-22 12:32:25,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:32:25,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:32:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:25,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:32:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:25,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:32:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:25,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:32:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:25,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:32:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:25,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:32:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:25,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:32:25,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:32:25,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376813167] [2021-12-22 12:32:25,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376813167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:32:25,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:32:25,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:32:25,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182299545] [2021-12-22 12:32:25,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:32:25,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:32:25,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:32:25,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:32:25,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:32:25,356 INFO L87 Difference]: Start difference. First operand 2305 states and 4236 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-12-22 12:32:26,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:32:26,334 INFO L93 Difference]: Finished difference Result 2759 states and 4947 transitions. [2021-12-22 12:32:26,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:32:26,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 91 [2021-12-22 12:32:26,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:32:26,348 INFO L225 Difference]: With dead ends: 2759 [2021-12-22 12:32:26,349 INFO L226 Difference]: Without dead ends: 2587 [2021-12-22 12:32:26,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:32:26,354 INFO L933 BasicCegarLoop]: 4278 mSDtfsCounter, 4606 mSDsluCounter, 12390 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 16668 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:32:26,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4617 Valid, 16668 Invalid, 905 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 12:32:26,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2021-12-22 12:32:26,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 2478. [2021-12-22 12:32:26,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2430 states have (on average 1.825514403292181) internal successors, (4436), 2434 states have internal predecessors, (4436), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2021-12-22 12:32:26,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 4503 transitions. [2021-12-22 12:32:26,423 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 4503 transitions. Word has length 91 [2021-12-22 12:32:26,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:32:26,424 INFO L470 AbstractCegarLoop]: Abstraction has 2478 states and 4503 transitions. [2021-12-22 12:32:26,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-12-22 12:32:26,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 4503 transitions. [2021-12-22 12:32:26,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 12:32:26,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:32:26,430 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] [2021-12-22 12:32:26,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:32:26,430 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:32:26,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:32:26,431 INFO L85 PathProgramCache]: Analyzing trace with hash -411857615, now seen corresponding path program 1 times [2021-12-22 12:32:26,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:32:26,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994080471] [2021-12-22 12:32:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:32:26,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:32:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:26,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:32:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:26,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:32:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:26,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:32:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:26,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:32:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:26,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:32:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:32:26,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:32:26,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994080471] [2021-12-22 12:32:26,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994080471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:32:26,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:32:26,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:32:26,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080928105] [2021-12-22 12:32:26,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:32:26,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:32:26,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:32:26,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:32:26,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:32:26,612 INFO L87 Difference]: Start difference. First operand 2478 states and 4503 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:32:27,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:32:27,586 INFO L93 Difference]: Finished difference Result 3162 states and 5569 transitions. [2021-12-22 12:32:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:32:27,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2021-12-22 12:32:27,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:32:27,599 INFO L225 Difference]: With dead ends: 3162 [2021-12-22 12:32:27,599 INFO L226 Difference]: Without dead ends: 2817 [2021-12-22 12:32:27,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:32:27,607 INFO L933 BasicCegarLoop]: 4413 mSDtfsCounter, 4602 mSDsluCounter, 16806 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4613 SdHoareTripleChecker+Valid, 21219 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:32:27,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4613 Valid, 21219 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 12:32:27,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2021-12-22 12:32:27,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2640. [2021-12-22 12:32:27,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 2572 states have (on average 1.8087091757387248) internal successors, (4652), 2577 states have internal predecessors, (4652), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2021-12-22 12:32:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 4747 transitions. [2021-12-22 12:32:27,686 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 4747 transitions. Word has length 91 [2021-12-22 12:32:27,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:32:27,687 INFO L470 AbstractCegarLoop]: Abstraction has 2640 states and 4747 transitions. [2021-12-22 12:32:27,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:32:27,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 4747 transitions. [2021-12-22 12:32:27,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 12:32:27,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:32:27,691 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] [2021-12-22 12:32:27,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:32:27,691 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:32:27,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:32:27,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1322246835, now seen corresponding path program 1 times [2021-12-22 12:32:27,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:32:27,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486085087] [2021-12-22 12:32:27,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:32:27,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:32:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:27,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:32:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:27,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:32:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:27,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:32:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:27,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:32:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:27,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:32:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:32:27,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:32:27,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486085087] [2021-12-22 12:32:27,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486085087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:32:27,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:32:27,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:32:27,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491316773] [2021-12-22 12:32:27,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:32:27,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:32:27,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:32:27,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:32:27,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:32:27,835 INFO L87 Difference]: Start difference. First operand 2640 states and 4747 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:32:28,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:32:28,842 INFO L93 Difference]: Finished difference Result 3755 states and 6481 transitions. [2021-12-22 12:32:28,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:32:28,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2021-12-22 12:32:28,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:32:28,856 INFO L225 Difference]: With dead ends: 3755 [2021-12-22 12:32:28,858 INFO L226 Difference]: Without dead ends: 3248 [2021-12-22 12:32:28,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:32:28,867 INFO L933 BasicCegarLoop]: 4290 mSDtfsCounter, 4649 mSDsluCounter, 16493 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4660 SdHoareTripleChecker+Valid, 20783 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:32:28,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4660 Valid, 20783 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 12:32:28,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2021-12-22 12:32:28,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 2965. [2021-12-22 12:32:28,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2857 states have (on average 1.7798389919495974) internal successors, (5085), 2864 states have internal predecessors, (5085), 72 states have call successors, (72), 31 states have call predecessors, (72), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2021-12-22 12:32:28,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 5240 transitions. [2021-12-22 12:32:28,959 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 5240 transitions. Word has length 91 [2021-12-22 12:32:28,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:32:28,959 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 5240 transitions. [2021-12-22 12:32:28,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:32:28,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 5240 transitions. [2021-12-22 12:32:28,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 12:32:28,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:32:28,961 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] [2021-12-22 12:32:28,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:32:28,961 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:32:28,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:32:28,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2085497615, now seen corresponding path program 1 times [2021-12-22 12:32:28,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:32:28,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879925320] [2021-12-22 12:32:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:32:28,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:32:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:28,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:32:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:28,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:32:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:29,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:32:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:29,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:32:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:29,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:32:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:29,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:32:29,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:32:29,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879925320] [2021-12-22 12:32:29,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879925320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:32:29,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:32:29,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:32:29,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316114443] [2021-12-22 12:32:29,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:32:29,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:32:29,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:32:29,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:32:29,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:32:29,028 INFO L87 Difference]: Start difference. First operand 2965 states and 5240 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:32:30,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:32:30,025 INFO L93 Difference]: Finished difference Result 4900 states and 8238 transitions. [2021-12-22 12:32:30,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:32:30,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2021-12-22 12:32:30,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:32:30,039 INFO L225 Difference]: With dead ends: 4900 [2021-12-22 12:32:30,039 INFO L226 Difference]: Without dead ends: 4068 [2021-12-22 12:32:30,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:32:30,043 INFO L933 BasicCegarLoop]: 4401 mSDtfsCounter, 4597 mSDsluCounter, 16802 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4608 SdHoareTripleChecker+Valid, 21203 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:32:30,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4608 Valid, 21203 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 12:32:30,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2021-12-22 12:32:30,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 3616. [2021-12-22 12:32:30,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3428 states have (on average 1.735997666277713) internal successors, (5951), 3439 states have internal predecessors, (5951), 124 states have call successors, (124), 55 states have call predecessors, (124), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2021-12-22 12:32:30,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 6232 transitions. [2021-12-22 12:32:30,131 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 6232 transitions. Word has length 91 [2021-12-22 12:32:30,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:32:30,132 INFO L470 AbstractCegarLoop]: Abstraction has 3616 states and 6232 transitions. [2021-12-22 12:32:30,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:32:30,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 6232 transitions. [2021-12-22 12:32:30,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 12:32:30,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:32:30,133 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] [2021-12-22 12:32:30,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:32:30,134 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:32:30,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:32:30,134 INFO L85 PathProgramCache]: Analyzing trace with hash 298427123, now seen corresponding path program 1 times [2021-12-22 12:32:30,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:32:30,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008257995] [2021-12-22 12:32:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:32:30,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:32:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:30,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:32:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:30,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:32:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:30,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:32:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:30,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:32:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:30,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:32:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:30,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:32:30,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:32:30,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008257995] [2021-12-22 12:32:30,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008257995] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:32:30,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:32:30,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:32:30,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831930759] [2021-12-22 12:32:30,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:32:30,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:32:30,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:32:30,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:32:30,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:32:30,201 INFO L87 Difference]: Start difference. First operand 3616 states and 6232 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:32:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:32:31,286 INFO L93 Difference]: Finished difference Result 7702 states and 12526 transitions. [2021-12-22 12:32:31,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:32:31,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2021-12-22 12:32:31,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:32:31,308 INFO L225 Difference]: With dead ends: 7702 [2021-12-22 12:32:31,309 INFO L226 Difference]: Without dead ends: 6219 [2021-12-22 12:32:31,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:32:31,316 INFO L933 BasicCegarLoop]: 4391 mSDtfsCounter, 4766 mSDsluCounter, 16794 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4782 SdHoareTripleChecker+Valid, 21185 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 12:32:31,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4782 Valid, 21185 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 12:32:31,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6219 states. [2021-12-22 12:32:31,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6219 to 4908. [2021-12-22 12:32:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4908 states, 4568 states have (on average 1.6836690017513134) internal successors, (7691), 4587 states have internal predecessors, (7691), 220 states have call successors, (220), 103 states have call predecessors, (220), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2021-12-22 12:32:31,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 8226 transitions. [2021-12-22 12:32:31,447 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 8226 transitions. Word has length 91 [2021-12-22 12:32:31,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:32:31,447 INFO L470 AbstractCegarLoop]: Abstraction has 4908 states and 8226 transitions. [2021-12-22 12:32:31,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:32:31,448 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 8226 transitions. [2021-12-22 12:32:31,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 12:32:31,450 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:32:31,450 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] [2021-12-22 12:32:31,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:32:31,450 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:32:31,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:32:31,450 INFO L85 PathProgramCache]: Analyzing trace with hash -668923531, now seen corresponding path program 1 times [2021-12-22 12:32:31,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:32:31,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435118465] [2021-12-22 12:32:31,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:32:31,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:32:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:32:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:31,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:32:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:31,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:32:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:32:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:32:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:32:31,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:32:31,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435118465] [2021-12-22 12:32:31,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435118465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:32:31,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:32:31,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:32:31,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990609047] [2021-12-22 12:32:31,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:32:31,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:32:31,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:32:31,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:32:31,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:32:31,519 INFO L87 Difference]: Start difference. First operand 4908 states and 8226 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:32:32,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:32:32,827 INFO L93 Difference]: Finished difference Result 12540 states and 20022 transitions. [2021-12-22 12:32:32,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:32:32,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2021-12-22 12:32:32,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:32:32,872 INFO L225 Difference]: With dead ends: 12540 [2021-12-22 12:32:32,872 INFO L226 Difference]: Without dead ends: 9765 [2021-12-22 12:32:32,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:32:32,883 INFO L933 BasicCegarLoop]: 4445 mSDtfsCounter, 4623 mSDsluCounter, 16791 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4633 SdHoareTripleChecker+Valid, 21236 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 12:32:32,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4633 Valid, 21236 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 12:32:32,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9765 states. [2021-12-22 12:32:33,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9765 to 7321. [2021-12-22 12:32:33,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7321 states, 6685 states have (on average 1.6282722513089005) internal successors, (10885), 6720 states have internal predecessors, (10885), 404 states have call successors, (404), 199 states have call predecessors, (404), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2021-12-22 12:32:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7321 states to 7321 states and 11966 transitions. [2021-12-22 12:32:33,135 INFO L78 Accepts]: Start accepts. Automaton has 7321 states and 11966 transitions. Word has length 91 [2021-12-22 12:32:33,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:32:33,135 INFO L470 AbstractCegarLoop]: Abstraction has 7321 states and 11966 transitions. [2021-12-22 12:32:33,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:32:33,136 INFO L276 IsEmpty]: Start isEmpty. Operand 7321 states and 11966 transitions. [2021-12-22 12:32:33,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 12:32:33,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:32:33,140 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] [2021-12-22 12:32:33,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:32:33,141 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:32:33,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:32:33,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1239534259, now seen corresponding path program 1 times [2021-12-22 12:32:33,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:32:33,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267179503] [2021-12-22 12:32:33,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:32:33,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:32:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:33,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:32:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:33,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:32:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:33,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:32:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:33,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:32:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:33,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:32:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:33,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:32:33,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:32:33,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267179503] [2021-12-22 12:32:33,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267179503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:32:33,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:32:33,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:32:33,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343370126] [2021-12-22 12:32:33,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:32:33,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:32:33,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:32:33,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:32:33,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:32:33,213 INFO L87 Difference]: Start difference. First operand 7321 states and 11966 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:32:35,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:32:35,177 INFO L93 Difference]: Finished difference Result 21439 states and 33876 transitions. [2021-12-22 12:32:35,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:32:35,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2021-12-22 12:32:35,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:32:35,229 INFO L225 Difference]: With dead ends: 21439 [2021-12-22 12:32:35,229 INFO L226 Difference]: Without dead ends: 16251 [2021-12-22 12:32:35,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:32:35,249 INFO L933 BasicCegarLoop]: 4381 mSDtfsCounter, 4686 mSDsluCounter, 16794 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4702 SdHoareTripleChecker+Valid, 21175 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:32:35,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4702 Valid, 21175 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:32:35,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16251 states. [2021-12-22 12:32:35,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16251 to 12290. [2021-12-22 12:32:35,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12290 states, 11078 states have (on average 1.5864777035565987) internal successors, (17575), 11145 states have internal predecessors, (17575), 756 states have call successors, (756), 391 states have call predecessors, (756), 454 states have return successors, (1547), 817 states have call predecessors, (1547), 754 states have call successors, (1547) [2021-12-22 12:32:35,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12290 states to 12290 states and 19878 transitions. [2021-12-22 12:32:35,686 INFO L78 Accepts]: Start accepts. Automaton has 12290 states and 19878 transitions. Word has length 91 [2021-12-22 12:32:35,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:32:35,686 INFO L470 AbstractCegarLoop]: Abstraction has 12290 states and 19878 transitions. [2021-12-22 12:32:35,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:32:35,686 INFO L276 IsEmpty]: Start isEmpty. Operand 12290 states and 19878 transitions. [2021-12-22 12:32:35,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 12:32:35,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:32:35,693 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] [2021-12-22 12:32:35,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:32:35,694 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:32:35,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:32:35,694 INFO L85 PathProgramCache]: Analyzing trace with hash 746908085, now seen corresponding path program 1 times [2021-12-22 12:32:35,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:32:35,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523963203] [2021-12-22 12:32:35,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:32:35,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:32:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:35,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:32:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:35,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:32:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:35,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:32:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:35,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:32:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:35,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:32:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:32:35,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:32:35,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523963203] [2021-12-22 12:32:35,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523963203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:32:35,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:32:35,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:32:35,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334415192] [2021-12-22 12:32:35,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:32:35,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:32:35,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:32:35,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:32:35,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:32:35,841 INFO L87 Difference]: Start difference. First operand 12290 states and 19878 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:32:37,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:32:37,932 INFO L93 Difference]: Finished difference Result 39094 states and 62122 transitions. [2021-12-22 12:32:37,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:32:37,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2021-12-22 12:32:37,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:32:38,035 INFO L225 Difference]: With dead ends: 39094 [2021-12-22 12:32:38,035 INFO L226 Difference]: Without dead ends: 28937 [2021-12-22 12:32:38,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:32:38,070 INFO L933 BasicCegarLoop]: 4376 mSDtfsCounter, 4646 mSDsluCounter, 16794 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4662 SdHoareTripleChecker+Valid, 21170 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 12:32:38,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4662 Valid, 21170 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 12:32:38,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28937 states. [2021-12-22 12:32:38,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28937 to 22195. [2021-12-22 12:32:38,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22195 states, 19863 states have (on average 1.5599355585762473) internal successors, (30985), 19994 states have internal predecessors, (30985), 1428 states have call successors, (1428), 775 states have call predecessors, (1428), 902 states have return successors, (3741), 1553 states have call predecessors, (3741), 1426 states have call successors, (3741) [2021-12-22 12:32:39,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22195 states to 22195 states and 36154 transitions. [2021-12-22 12:32:39,034 INFO L78 Accepts]: Start accepts. Automaton has 22195 states and 36154 transitions. Word has length 91 [2021-12-22 12:32:39,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:32:39,034 INFO L470 AbstractCegarLoop]: Abstraction has 22195 states and 36154 transitions. [2021-12-22 12:32:39,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:32:39,034 INFO L276 IsEmpty]: Start isEmpty. Operand 22195 states and 36154 transitions. [2021-12-22 12:32:39,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 12:32:39,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:32:39,048 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] [2021-12-22 12:32:39,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:32:39,048 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:32:39,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:32:39,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1700848243, now seen corresponding path program 1 times [2021-12-22 12:32:39,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:32:39,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695788990] [2021-12-22 12:32:39,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:32:39,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:32:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:39,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:32:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:39,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:32:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:39,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:32:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:39,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:32:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:39,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:32:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:39,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:32:39,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:32:39,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695788990] [2021-12-22 12:32:39,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695788990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:32:39,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:32:39,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:32:39,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142314784] [2021-12-22 12:32:39,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:32:39,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:32:39,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:32:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:32:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:32:39,131 INFO L87 Difference]: Start difference. First operand 22195 states and 36154 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:32:41,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:32:41,737 INFO L93 Difference]: Finished difference Result 73149 states and 118600 transitions. [2021-12-22 12:32:41,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:32:41,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2021-12-22 12:32:41,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:32:42,153 INFO L225 Difference]: With dead ends: 73149 [2021-12-22 12:32:42,153 INFO L226 Difference]: Without dead ends: 53087 [2021-12-22 12:32:42,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:32:42,205 INFO L933 BasicCegarLoop]: 4377 mSDtfsCounter, 4591 mSDsluCounter, 16779 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 21156 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:32:42,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4601 Valid, 21156 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 12:32:42,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53087 states. [2021-12-22 12:32:44,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53087 to 41916. [2021-12-22 12:32:44,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41916 states, 37424 states have (on average 1.546039974348012) internal successors, (57859), 37683 states have internal predecessors, (57859), 2700 states have call successors, (2700), 1535 states have call predecessors, (2700), 1790 states have return successors, (9515), 2953 states have call predecessors, (9515), 2698 states have call successors, (9515) [2021-12-22 12:32:44,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41916 states to 41916 states and 70074 transitions. [2021-12-22 12:32:44,252 INFO L78 Accepts]: Start accepts. Automaton has 41916 states and 70074 transitions. Word has length 91 [2021-12-22 12:32:44,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:32:44,253 INFO L470 AbstractCegarLoop]: Abstraction has 41916 states and 70074 transitions. [2021-12-22 12:32:44,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:32:44,253 INFO L276 IsEmpty]: Start isEmpty. Operand 41916 states and 70074 transitions. [2021-12-22 12:32:44,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 12:32:44,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:32:44,284 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] [2021-12-22 12:32:44,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:32:44,285 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:32:44,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:32:44,285 INFO L85 PathProgramCache]: Analyzing trace with hash 484694517, now seen corresponding path program 1 times [2021-12-22 12:32:44,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:32:44,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372440498] [2021-12-22 12:32:44,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:32:44,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:32:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:44,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:32:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:44,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:32:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:32:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:44,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:32:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:44,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:32:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:32:44,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:32:44,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372440498] [2021-12-22 12:32:44,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372440498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:32:44,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:32:44,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:32:44,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430164622] [2021-12-22 12:32:44,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:32:44,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:32:44,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:32:44,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:32:44,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:32:44,364 INFO L87 Difference]: Start difference. First operand 41916 states and 70074 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-12-22 12:32:48,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:32:48,484 INFO L93 Difference]: Finished difference Result 114784 states and 187983 transitions. [2021-12-22 12:32:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:32:48,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 91 [2021-12-22 12:32:48,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:32:48,906 INFO L225 Difference]: With dead ends: 114784 [2021-12-22 12:32:48,906 INFO L226 Difference]: Without dead ends: 75002 [2021-12-22 12:32:48,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-22 12:32:48,991 INFO L933 BasicCegarLoop]: 4487 mSDtfsCounter, 4788 mSDsluCounter, 12458 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4817 SdHoareTripleChecker+Valid, 16945 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:32:48,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4817 Valid, 16945 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 12:32:49,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75002 states. [2021-12-22 12:32:51,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75002 to 61307. [2021-12-22 12:32:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61307 states, 54491 states have (on average 1.5260501734231342) internal successors, (83156), 55007 states have internal predecessors, (83156), 4122 states have call successors, (4122), 2309 states have call predecessors, (4122), 2692 states have return successors, (13125), 4246 states have call predecessors, (13125), 4120 states have call successors, (13125) [2021-12-22 12:32:51,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61307 states to 61307 states and 100403 transitions. [2021-12-22 12:32:51,922 INFO L78 Accepts]: Start accepts. Automaton has 61307 states and 100403 transitions. Word has length 91 [2021-12-22 12:32:51,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:32:51,924 INFO L470 AbstractCegarLoop]: Abstraction has 61307 states and 100403 transitions. [2021-12-22 12:32:51,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-12-22 12:32:51,925 INFO L276 IsEmpty]: Start isEmpty. Operand 61307 states and 100403 transitions. [2021-12-22 12:32:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-22 12:32:52,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:32:52,095 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:32:52,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 12:32:52,095 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:32:52,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:32:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash -908289339, now seen corresponding path program 1 times [2021-12-22 12:32:52,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:32:52,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982009974] [2021-12-22 12:32:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:32:52,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:32:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:52,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:32:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:52,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:32:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:52,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:32:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:52,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:32:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:52,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:32:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:52,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 12:32:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:52,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 12:32:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:52,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:32:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 12:32:52,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:32:52,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982009974] [2021-12-22 12:32:52,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982009974] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 12:32:52,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828155625] [2021-12-22 12:32:52,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:32:52,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 12:32:52,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:32:52,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 12:32:52,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 12:32:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:32:52,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 12:32:52,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 12:32:52,893 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 12:32:52,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 12:32:52,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828155625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:32:52,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 12:32:52,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-22 12:32:52,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799783755] [2021-12-22 12:32:52,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:32:52,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:32:52,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:32:52,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:32:52,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:32:52,896 INFO L87 Difference]: Start difference. First operand 61307 states and 100403 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-22 12:32:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:32:57,198 INFO L93 Difference]: Finished difference Result 178274 states and 292637 transitions. [2021-12-22 12:32:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:32:57,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2021-12-22 12:32:57,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:32:57,701 INFO L225 Difference]: With dead ends: 178274 [2021-12-22 12:32:57,701 INFO L226 Difference]: Without dead ends: 119101 [2021-12-22 12:32:58,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:32:58,074 INFO L933 BasicCegarLoop]: 4245 mSDtfsCounter, 4185 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4185 SdHoareTripleChecker+Valid, 4494 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:32:58,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4185 Valid, 4494 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:32:58,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119101 states. [2021-12-22 12:33:03,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119101 to 118325. [2021-12-22 12:33:03,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118325 states, 104911 states have (on average 1.5178675258075893) internal successors, (159241), 105940 states have internal predecessors, (159241), 8036 states have call successors, (8036), 4609 states have call predecessors, (8036), 5376 states have return successors, (25789), 8031 states have call predecessors, (25789), 8034 states have call successors, (25789) [2021-12-22 12:33:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118325 states to 118325 states and 193066 transitions. [2021-12-22 12:33:03,844 INFO L78 Accepts]: Start accepts. Automaton has 118325 states and 193066 transitions. Word has length 147 [2021-12-22 12:33:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:33:03,845 INFO L470 AbstractCegarLoop]: Abstraction has 118325 states and 193066 transitions. [2021-12-22 12:33:03,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-22 12:33:03,845 INFO L276 IsEmpty]: Start isEmpty. Operand 118325 states and 193066 transitions. [2021-12-22 12:33:04,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-22 12:33:04,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:33:04,026 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:33:04,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 12:33:04,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-22 12:33:04,245 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:33:04,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:33:04,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1311563429, now seen corresponding path program 1 times [2021-12-22 12:33:04,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:33:04,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398445168] [2021-12-22 12:33:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:33:04,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:33:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:33:04,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:33:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:33:04,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:33:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:33:04,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:33:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:33:04,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:33:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:33:04,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:33:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:33:04,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 12:33:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:33:04,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 12:33:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:33:04,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:33:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:33:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 12:33:04,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:33:04,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398445168] [2021-12-22 12:33:04,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398445168] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 12:33:04,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628846171] [2021-12-22 12:33:04,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:33:04,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 12:33:04,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:33:04,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 12:33:04,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 12:33:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:33:04,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 12:33:04,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 12:33:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 12:33:04,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 12:33:04,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628846171] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:33:04,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 12:33:04,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-22 12:33:04,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781348823] [2021-12-22 12:33:04,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:33:04,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:33:04,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:33:04,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:33:04,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:33:04,703 INFO L87 Difference]: Start difference. First operand 118325 states and 193066 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)