./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/sll-reverse_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3a877d22 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/sll-reverse_simple.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7651578256dc791e0a036690d99e12094845a58f582fb99f9abee48c7c5dfba --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:05:31,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:05:31,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:05:31,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:05:31,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:05:31,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:05:31,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:05:31,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:05:31,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:05:31,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:05:31,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:05:31,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:05:31,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:05:31,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:05:31,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:05:31,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:05:31,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:05:31,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:05:31,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:05:31,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:05:31,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:05:31,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:05:31,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:05:31,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:05:31,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:05:31,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:05:31,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:05:31,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:05:31,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:05:31,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:05:31,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:05:31,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:05:31,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:05:31,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:05:31,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:05:31,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:05:31,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:05:31,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:05:31,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:05:31,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:05:31,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:05:31,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 14:05:31,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:05:31,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:05:31,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:05:31,622 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:05:31,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:05:31,623 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:05:31,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:05:31,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:05:31,624 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:05:31,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:05:31,624 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:05:31,624 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:05:31,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:05:31,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:05:31,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:05:31,625 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:05:31,625 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:05:31,625 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:05:31,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:05:31,625 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:05:31,626 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:05:31,626 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:05:31,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:05:31,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:05:31,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:05:31,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:05:31,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:05:31,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:05:31,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 14:05:31,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 14:05:31,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:05:31,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7651578256dc791e0a036690d99e12094845a58f582fb99f9abee48c7c5dfba [2021-12-15 14:05:31,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:05:31,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:05:31,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:05:31,812 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:05:31,812 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:05:31,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-reverse_simple.i [2021-12-15 14:05:31,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a2732d4c/82e727272ac740a592bbc8958416fc92/FLAG11ea41106 [2021-12-15 14:05:32,258 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:05:32,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-reverse_simple.i [2021-12-15 14:05:32,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a2732d4c/82e727272ac740a592bbc8958416fc92/FLAG11ea41106 [2021-12-15 14:05:32,620 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a2732d4c/82e727272ac740a592bbc8958416fc92 [2021-12-15 14:05:32,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:05:32,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:05:32,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:05:32,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:05:32,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:05:32,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:05:32" (1/1) ... [2021-12-15 14:05:32,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4739d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:05:32, skipping insertion in model container [2021-12-15 14:05:32,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:05:32" (1/1) ... [2021-12-15 14:05:32,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:05:32,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:05:32,897 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/forester-heap/sll-reverse_simple.i[22251,22264] [2021-12-15 14:05:32,902 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/forester-heap/sll-reverse_simple.i[22336,22349] [2021-12-15 14:05:32,909 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/forester-heap/sll-reverse_simple.i[22829,22842] [2021-12-15 14:05:32,918 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:05:32,923 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:05:32,962 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/forester-heap/sll-reverse_simple.i[22251,22264] [2021-12-15 14:05:32,963 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/forester-heap/sll-reverse_simple.i[22336,22349] [2021-12-15 14:05:32,969 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/forester-heap/sll-reverse_simple.i[22829,22842] [2021-12-15 14:05:32,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:05:32,993 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:05:32,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:05:32 WrapperNode [2021-12-15 14:05:32,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:05:32,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:05:32,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:05:32,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:05:33,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:05:32" (1/1) ... [2021-12-15 14:05:33,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:05:32" (1/1) ... [2021-12-15 14:05:33,052 INFO L137 Inliner]: procedures = 119, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 139 [2021-12-15 14:05:33,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:05:33,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:05:33,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:05:33,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:05:33,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:05:32" (1/1) ... [2021-12-15 14:05:33,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:05:32" (1/1) ... [2021-12-15 14:05:33,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:05:32" (1/1) ... [2021-12-15 14:05:33,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:05:32" (1/1) ... [2021-12-15 14:05:33,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:05:32" (1/1) ... [2021-12-15 14:05:33,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:05:32" (1/1) ... [2021-12-15 14:05:33,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:05:32" (1/1) ... [2021-12-15 14:05:33,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:05:33,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:05:33,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:05:33,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:05:33,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:05:32" (1/1) ... [2021-12-15 14:05:33,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:05:33,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:05:33,137 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) [2021-12-15 14:05:33,140 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 [2021-12-15 14:05:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 14:05:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 14:05:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 14:05:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:05:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 14:05:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 14:05:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 14:05:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 14:05:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:05:33,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:05:33,289 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:05:33,290 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:05:33,607 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 14:05:33,614 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 14:05:33,614 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-15 14:05:33,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:05:33 BoogieIcfgContainer [2021-12-15 14:05:33,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 14:05:33,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 14:05:33,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 14:05:33,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 14:05:33,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 02:05:32" (1/3) ... [2021-12-15 14:05:33,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e7ea0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:05:33, skipping insertion in model container [2021-12-15 14:05:33,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:05:32" (2/3) ... [2021-12-15 14:05:33,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e7ea0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:05:33, skipping insertion in model container [2021-12-15 14:05:33,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:05:33" (3/3) ... [2021-12-15 14:05:33,624 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-reverse_simple.i [2021-12-15 14:05:33,627 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 14:05:33,628 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2021-12-15 14:05:33,666 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 14:05:33,673 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-12-15 14:05:33,674 INFO L340 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2021-12-15 14:05:33,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 128 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:33,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-15 14:05:33,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:33,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-15 14:05:33,708 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:33,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:33,712 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-15 14:05:33,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:33,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134317936] [2021-12-15 14:05:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:33,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:33,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:33,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:33,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134317936] [2021-12-15 14:05:33,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134317936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:05:33,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:05:33,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:05:33,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197239698] [2021-12-15 14:05:33,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:05:33,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:05:33,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:33,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:05:33,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:05:33,870 INFO L87 Difference]: Start difference. First operand has 129 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 128 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:34,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:34,002 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2021-12-15 14:05:34,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:05:34,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-15 14:05:34,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:34,010 INFO L225 Difference]: With dead ends: 127 [2021-12-15 14:05:34,010 INFO L226 Difference]: Without dead ends: 125 [2021-12-15 14:05:34,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:05:34,015 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 81 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:34,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 121 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:05:34,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-15 14:05:34,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-12-15 14:05:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 70 states have (on average 1.9) internal successors, (133), 124 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:34,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2021-12-15 14:05:34,054 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 3 [2021-12-15 14:05:34,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:34,054 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2021-12-15 14:05:34,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:34,054 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2021-12-15 14:05:34,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-15 14:05:34,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:34,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-15 14:05:34,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 14:05:34,056 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:34,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:34,058 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-15 14:05:34,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:34,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894509169] [2021-12-15 14:05:34,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:34,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:34,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:34,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894509169] [2021-12-15 14:05:34,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894509169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:05:34,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:05:34,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:05:34,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913539336] [2021-12-15 14:05:34,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:05:34,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:05:34,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:34,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:05:34,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:05:34,105 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:34,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:34,164 INFO L93 Difference]: Finished difference Result 123 states and 131 transitions. [2021-12-15 14:05:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:05:34,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-15 14:05:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:34,166 INFO L225 Difference]: With dead ends: 123 [2021-12-15 14:05:34,166 INFO L226 Difference]: Without dead ends: 123 [2021-12-15 14:05:34,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:05:34,167 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 79 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:34,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 117 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:05:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-15 14:05:34,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-12-15 14:05:34,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 70 states have (on average 1.8714285714285714) internal successors, (131), 122 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:34,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2021-12-15 14:05:34,172 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 3 [2021-12-15 14:05:34,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:34,172 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 131 transitions. [2021-12-15 14:05:34,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:34,173 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 131 transitions. [2021-12-15 14:05:34,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 14:05:34,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:34,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:05:34,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 14:05:34,174 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:34,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:34,174 INFO L85 PathProgramCache]: Analyzing trace with hash 59263661, now seen corresponding path program 1 times [2021-12-15 14:05:34,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:34,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853474498] [2021-12-15 14:05:34,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:34,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:34,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:34,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:34,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853474498] [2021-12-15 14:05:34,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853474498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:05:34,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:05:34,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:05:34,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641881272] [2021-12-15 14:05:34,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:05:34,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:05:34,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:34,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:05:34,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:05:34,227 INFO L87 Difference]: Start difference. First operand 123 states and 131 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:34,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:34,339 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2021-12-15 14:05:34,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 14:05:34,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 14:05:34,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:34,340 INFO L225 Difference]: With dead ends: 117 [2021-12-15 14:05:34,340 INFO L226 Difference]: Without dead ends: 117 [2021-12-15 14:05:34,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 14:05:34,342 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 140 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:34,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 86 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:05:34,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-15 14:05:34,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2021-12-15 14:05:34,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 74 states have (on average 1.6891891891891893) internal successors, (125), 112 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2021-12-15 14:05:34,346 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 8 [2021-12-15 14:05:34,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:34,347 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2021-12-15 14:05:34,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:34,347 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2021-12-15 14:05:34,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 14:05:34,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:34,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:05:34,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 14:05:34,348 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:34,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:34,348 INFO L85 PathProgramCache]: Analyzing trace with hash 59263662, now seen corresponding path program 1 times [2021-12-15 14:05:34,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:34,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521285904] [2021-12-15 14:05:34,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:34,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:34,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:34,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521285904] [2021-12-15 14:05:34,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521285904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:05:34,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:05:34,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 14:05:34,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906186589] [2021-12-15 14:05:34,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:05:34,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 14:05:34,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:34,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 14:05:34,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:05:34,426 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:34,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:34,642 INFO L93 Difference]: Finished difference Result 150 states and 164 transitions. [2021-12-15 14:05:34,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 14:05:34,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 14:05:34,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:34,645 INFO L225 Difference]: With dead ends: 150 [2021-12-15 14:05:34,645 INFO L226 Difference]: Without dead ends: 150 [2021-12-15 14:05:34,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-15 14:05:34,646 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 248 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:34,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 154 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 14:05:34,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-12-15 14:05:34,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 135. [2021-12-15 14:05:34,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 96 states have (on average 1.5729166666666667) internal successors, (151), 134 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:34,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 151 transitions. [2021-12-15 14:05:34,656 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 151 transitions. Word has length 8 [2021-12-15 14:05:34,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:34,656 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 151 transitions. [2021-12-15 14:05:34,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:34,656 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 151 transitions. [2021-12-15 14:05:34,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-15 14:05:34,657 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:34,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:05:34,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 14:05:34,657 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:34,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:34,657 INFO L85 PathProgramCache]: Analyzing trace with hash 467003055, now seen corresponding path program 1 times [2021-12-15 14:05:34,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:34,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820290664] [2021-12-15 14:05:34,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:34,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:34,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:34,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820290664] [2021-12-15 14:05:34,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820290664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:05:34,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:05:34,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 14:05:34,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849005225] [2021-12-15 14:05:34,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:05:34,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 14:05:34,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:34,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 14:05:34,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:05:34,723 INFO L87 Difference]: Start difference. First operand 135 states and 151 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:34,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:34,912 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2021-12-15 14:05:34,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-15 14:05:34,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-15 14:05:34,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:34,913 INFO L225 Difference]: With dead ends: 136 [2021-12-15 14:05:34,913 INFO L226 Difference]: Without dead ends: 136 [2021-12-15 14:05:34,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-15 14:05:34,914 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 71 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:34,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 230 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 14:05:34,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-15 14:05:34,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2021-12-15 14:05:34,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 96 states have (on average 1.5625) internal successors, (150), 133 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:34,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 150 transitions. [2021-12-15 14:05:34,918 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 150 transitions. Word has length 12 [2021-12-15 14:05:34,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:34,918 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 150 transitions. [2021-12-15 14:05:34,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:34,919 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 150 transitions. [2021-12-15 14:05:34,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-15 14:05:34,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:34,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:05:34,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 14:05:34,919 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:34,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:34,920 INFO L85 PathProgramCache]: Analyzing trace with hash 467003056, now seen corresponding path program 1 times [2021-12-15 14:05:34,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:34,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012957398] [2021-12-15 14:05:34,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:34,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:34,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:34,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012957398] [2021-12-15 14:05:34,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012957398] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:05:34,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:05:34,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 14:05:34,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622161335] [2021-12-15 14:05:34,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:05:34,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 14:05:34,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:34,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 14:05:34,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:05:34,992 INFO L87 Difference]: Start difference. First operand 134 states and 150 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:35,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:35,193 INFO L93 Difference]: Finished difference Result 132 states and 148 transitions. [2021-12-15 14:05:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 14:05:35,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-15 14:05:35,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:35,194 INFO L225 Difference]: With dead ends: 132 [2021-12-15 14:05:35,195 INFO L226 Difference]: Without dead ends: 132 [2021-12-15 14:05:35,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-15 14:05:35,195 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 9 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:35,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 316 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:05:35,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-12-15 14:05:35,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 125. [2021-12-15 14:05:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 91 states have (on average 1.5384615384615385) internal successors, (140), 124 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2021-12-15 14:05:35,199 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 12 [2021-12-15 14:05:35,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:35,199 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2021-12-15 14:05:35,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:35,199 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2021-12-15 14:05:35,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-15 14:05:35,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:35,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:05:35,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 14:05:35,200 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:35,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:35,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1394377289, now seen corresponding path program 1 times [2021-12-15 14:05:35,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:35,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661547019] [2021-12-15 14:05:35,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:35,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:35,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:35,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661547019] [2021-12-15 14:05:35,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661547019] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:05:35,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:05:35,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 14:05:35,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727683331] [2021-12-15 14:05:35,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:05:35,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:05:35,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:35,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:05:35,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:05:35,228 INFO L87 Difference]: Start difference. First operand 125 states and 140 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:35,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:35,301 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2021-12-15 14:05:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 14:05:35,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-15 14:05:35,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:35,302 INFO L225 Difference]: With dead ends: 140 [2021-12-15 14:05:35,302 INFO L226 Difference]: Without dead ends: 140 [2021-12-15 14:05:35,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 14:05:35,303 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 123 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:35,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 174 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:05:35,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-12-15 14:05:35,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 125. [2021-12-15 14:05:35,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 91 states have (on average 1.5054945054945055) internal successors, (137), 124 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:35,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2021-12-15 14:05:35,307 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 14 [2021-12-15 14:05:35,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:35,307 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2021-12-15 14:05:35,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:35,308 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2021-12-15 14:05:35,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-15 14:05:35,308 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:35,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:05:35,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 14:05:35,308 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:35,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:35,309 INFO L85 PathProgramCache]: Analyzing trace with hash -991514342, now seen corresponding path program 1 times [2021-12-15 14:05:35,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:35,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767308167] [2021-12-15 14:05:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:35,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:35,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:35,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767308167] [2021-12-15 14:05:35,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767308167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:05:35,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:05:35,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 14:05:35,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59867419] [2021-12-15 14:05:35,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:05:35,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 14:05:35,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:35,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 14:05:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:05:35,387 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:35,518 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2021-12-15 14:05:35,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-15 14:05:35,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-15 14:05:35,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:35,519 INFO L225 Difference]: With dead ends: 146 [2021-12-15 14:05:35,520 INFO L226 Difference]: Without dead ends: 146 [2021-12-15 14:05:35,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-15 14:05:35,521 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 27 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:35,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 399 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:05:35,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-15 14:05:35,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 133. [2021-12-15 14:05:35,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 99 states have (on average 1.4747474747474747) internal successors, (146), 132 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 146 transitions. [2021-12-15 14:05:35,524 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 146 transitions. Word has length 17 [2021-12-15 14:05:35,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:35,525 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 146 transitions. [2021-12-15 14:05:35,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:35,525 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2021-12-15 14:05:35,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-15 14:05:35,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:35,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:05:35,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 14:05:35,526 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:35,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:35,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1632793422, now seen corresponding path program 1 times [2021-12-15 14:05:35,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:35,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171735639] [2021-12-15 14:05:35,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:35,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:35,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:35,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:35,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171735639] [2021-12-15 14:05:35,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171735639] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:05:35,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:05:35,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 14:05:35,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848453230] [2021-12-15 14:05:35,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:05:35,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 14:05:35,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:35,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 14:05:35,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:05:35,593 INFO L87 Difference]: Start difference. First operand 133 states and 146 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:35,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:35,727 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2021-12-15 14:05:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 14:05:35,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-15 14:05:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:35,728 INFO L225 Difference]: With dead ends: 152 [2021-12-15 14:05:35,728 INFO L226 Difference]: Without dead ends: 152 [2021-12-15 14:05:35,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-15 14:05:35,729 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 25 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:35,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 287 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:05:35,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-15 14:05:35,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 143. [2021-12-15 14:05:35,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 109 states have (on average 1.4587155963302751) internal successors, (159), 142 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 159 transitions. [2021-12-15 14:05:35,732 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 159 transitions. Word has length 19 [2021-12-15 14:05:35,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:35,733 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 159 transitions. [2021-12-15 14:05:35,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:35,733 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 159 transitions. [2021-12-15 14:05:35,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-15 14:05:35,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:35,734 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] [2021-12-15 14:05:35,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 14:05:35,734 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:35,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:35,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1777521809, now seen corresponding path program 1 times [2021-12-15 14:05:35,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:35,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055131929] [2021-12-15 14:05:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:35,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:35,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:35,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055131929] [2021-12-15 14:05:35,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055131929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:05:35,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:05:35,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 14:05:35,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727651266] [2021-12-15 14:05:35,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:05:35,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 14:05:35,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:35,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 14:05:35,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:05:35,790 INFO L87 Difference]: Start difference. First operand 143 states and 159 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:35,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:35,925 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2021-12-15 14:05:35,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 14:05:35,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-15 14:05:35,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:35,926 INFO L225 Difference]: With dead ends: 144 [2021-12-15 14:05:35,926 INFO L226 Difference]: Without dead ends: 144 [2021-12-15 14:05:35,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-15 14:05:35,926 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 68 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:35,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 227 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:05:35,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-12-15 14:05:35,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2021-12-15 14:05:35,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 109 states have (on average 1.4495412844036697) internal successors, (158), 141 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:35,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2021-12-15 14:05:35,929 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 22 [2021-12-15 14:05:35,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:35,930 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2021-12-15 14:05:35,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:35,930 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2021-12-15 14:05:35,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-15 14:05:35,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:35,931 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] [2021-12-15 14:05:35,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 14:05:35,931 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:35,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:35,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1777521810, now seen corresponding path program 1 times [2021-12-15 14:05:35,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:35,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689454699] [2021-12-15 14:05:35,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:35,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:36,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:36,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689454699] [2021-12-15 14:05:36,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689454699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:05:36,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:05:36,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 14:05:36,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628683466] [2021-12-15 14:05:36,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:05:36,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 14:05:36,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:36,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 14:05:36,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:05:36,007 INFO L87 Difference]: Start difference. First operand 142 states and 158 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:36,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:36,145 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2021-12-15 14:05:36,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 14:05:36,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-15 14:05:36,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:36,149 INFO L225 Difference]: With dead ends: 141 [2021-12-15 14:05:36,150 INFO L226 Difference]: Without dead ends: 141 [2021-12-15 14:05:36,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-15 14:05:36,150 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 6 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:36,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 296 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:05:36,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-15 14:05:36,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2021-12-15 14:05:36,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 109 states have (on average 1.4311926605504588) internal successors, (156), 139 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:36,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 156 transitions. [2021-12-15 14:05:36,154 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 156 transitions. Word has length 22 [2021-12-15 14:05:36,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:36,154 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 156 transitions. [2021-12-15 14:05:36,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:36,155 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 156 transitions. [2021-12-15 14:05:36,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-15 14:05:36,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:36,155 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:05:36,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 14:05:36,156 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:36,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:36,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1310880280, now seen corresponding path program 1 times [2021-12-15 14:05:36,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:36,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826004999] [2021-12-15 14:05:36,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:36,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:36,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:36,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826004999] [2021-12-15 14:05:36,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826004999] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:05:36,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919378707] [2021-12-15 14:05:36,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:36,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:05:36,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:05:36,277 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) [2021-12-15 14:05:36,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 14:05:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:36,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-15 14:05:36,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:05:36,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 14:05:36,520 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-15 14:05:36,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-15 14:05:36,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 14:05:36,685 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:05:36,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-15 14:05:36,714 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:05:36,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-15 14:05:36,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:05:36,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-15 14:05:36,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:36,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:05:37,170 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:37,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2021-12-15 14:05:37,178 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:37,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2021-12-15 14:05:37,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-12-15 14:05:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:38,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919378707] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:05:38,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:05:38,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 30 [2021-12-15 14:05:38,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101181835] [2021-12-15 14:05:38,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:05:38,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-15 14:05:38,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:38,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-15 14:05:38,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=787, Unknown=6, NotChecked=0, Total=930 [2021-12-15 14:05:38,026 INFO L87 Difference]: Start difference. First operand 140 states and 156 transitions. Second operand has 31 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:38,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:38,402 INFO L93 Difference]: Finished difference Result 224 states and 252 transitions. [2021-12-15 14:05:38,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-15 14:05:38,403 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-15 14:05:38,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:38,404 INFO L225 Difference]: With dead ends: 224 [2021-12-15 14:05:38,404 INFO L226 Difference]: Without dead ends: 224 [2021-12-15 14:05:38,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=246, Invalid=1080, Unknown=6, NotChecked=0, Total=1332 [2021-12-15 14:05:38,405 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 313 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 680 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:38,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 866 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 464 Invalid, 0 Unknown, 680 Unchecked, 0.2s Time] [2021-12-15 14:05:38,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-15 14:05:38,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 158. [2021-12-15 14:05:38,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 127 states have (on average 1.4015748031496063) internal successors, (178), 157 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:38,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 178 transitions. [2021-12-15 14:05:38,408 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 178 transitions. Word has length 25 [2021-12-15 14:05:38,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:38,408 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 178 transitions. [2021-12-15 14:05:38,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:38,409 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 178 transitions. [2021-12-15 14:05:38,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-15 14:05:38,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:38,409 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:05:38,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 14:05:38,619 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 [2021-12-15 14:05:38,619 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:38,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:38,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1310880279, now seen corresponding path program 1 times [2021-12-15 14:05:38,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:38,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767180181] [2021-12-15 14:05:38,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:38,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:38,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:38,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767180181] [2021-12-15 14:05:38,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767180181] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:05:38,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927177293] [2021-12-15 14:05:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:38,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:05:38,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:05:38,758 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) [2021-12-15 14:05:38,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 14:05:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:38,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-15 14:05:38,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:05:38,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 14:05:38,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 14:05:38,892 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:05:38,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-15 14:05:38,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 14:05:38,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 14:05:39,032 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 14:05:39,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-15 14:05:39,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-15 14:05:39,050 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:05:39,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-15 14:05:39,081 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:05:39,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-12-15 14:05:39,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-15 14:05:39,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:05:39,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-15 14:05:39,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:05:39,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 14:05:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:39,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:05:39,792 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:39,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 49 [2021-12-15 14:05:39,797 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:39,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 49 [2021-12-15 14:05:39,806 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:39,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 75 [2021-12-15 14:05:39,814 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:39,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 116 [2021-12-15 14:05:39,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 81 [2021-12-15 14:05:39,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 77 [2021-12-15 14:05:39,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 75 [2021-12-15 14:05:40,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:40,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927177293] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:05:40,216 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:05:40,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 33 [2021-12-15 14:05:40,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139294935] [2021-12-15 14:05:40,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:05:40,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-15 14:05:40,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:40,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-15 14:05:40,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1007, Unknown=7, NotChecked=0, Total=1122 [2021-12-15 14:05:40,217 INFO L87 Difference]: Start difference. First operand 158 states and 178 transitions. Second operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 34 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:41,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:41,621 INFO L93 Difference]: Finished difference Result 260 states and 289 transitions. [2021-12-15 14:05:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-15 14:05:41,622 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 34 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-15 14:05:41,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:41,623 INFO L225 Difference]: With dead ends: 260 [2021-12-15 14:05:41,623 INFO L226 Difference]: Without dead ends: 260 [2021-12-15 14:05:41,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 29 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=426, Invalid=2323, Unknown=7, NotChecked=0, Total=2756 [2021-12-15 14:05:41,625 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 689 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 2135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 560 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:41,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 1107 Invalid, 2135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1437 Invalid, 0 Unknown, 560 Unchecked, 0.6s Time] [2021-12-15 14:05:41,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-12-15 14:05:41,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 158. [2021-12-15 14:05:41,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 132 states have (on average 1.3863636363636365) internal successors, (183), 157 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:41,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 183 transitions. [2021-12-15 14:05:41,629 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 183 transitions. Word has length 25 [2021-12-15 14:05:41,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:41,629 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 183 transitions. [2021-12-15 14:05:41,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 34 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:41,629 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 183 transitions. [2021-12-15 14:05:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 14:05:41,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:41,634 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-15 14:05:41,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 14:05:41,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-15 14:05:41,839 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:41,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:41,840 INFO L85 PathProgramCache]: Analyzing trace with hash 14127102, now seen corresponding path program 1 times [2021-12-15 14:05:41,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:41,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019120184] [2021-12-15 14:05:41,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:41,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:41,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:41,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019120184] [2021-12-15 14:05:41,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019120184] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:05:41,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398584254] [2021-12-15 14:05:41,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:41,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:05:41,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:05:41,968 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:05:41,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 14:05:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:42,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-15 14:05:42,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:05:42,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 14:05:42,113 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-15 14:05:42,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-15 14:05:42,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 14:05:42,261 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:05:42,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-15 14:05:42,299 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:05:42,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-15 14:05:42,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:05:42,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-12-15 14:05:42,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:05:42,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-15 14:05:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:42,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:05:42,719 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:42,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2021-12-15 14:05:42,725 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:42,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2021-12-15 14:05:42,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-12-15 14:05:43,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:43,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398584254] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:05:43,429 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:05:43,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 28 [2021-12-15 14:05:43,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956916935] [2021-12-15 14:05:43,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:05:43,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-15 14:05:43,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:43,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-15 14:05:43,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=686, Unknown=7, NotChecked=0, Total=812 [2021-12-15 14:05:43,433 INFO L87 Difference]: Start difference. First operand 158 states and 183 transitions. Second operand has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:43,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:43,856 INFO L93 Difference]: Finished difference Result 243 states and 274 transitions. [2021-12-15 14:05:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-15 14:05:43,856 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-15 14:05:43,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:43,858 INFO L225 Difference]: With dead ends: 243 [2021-12-15 14:05:43,858 INFO L226 Difference]: Without dead ends: 243 [2021-12-15 14:05:43,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=216, Invalid=1037, Unknown=7, NotChecked=0, Total=1260 [2021-12-15 14:05:43,859 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 314 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 656 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:43,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 777 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 734 Invalid, 0 Unknown, 656 Unchecked, 0.3s Time] [2021-12-15 14:05:43,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-12-15 14:05:43,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 165. [2021-12-15 14:05:43,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 139 states have (on average 1.381294964028777) internal successors, (192), 164 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:43,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 192 transitions. [2021-12-15 14:05:43,862 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 192 transitions. Word has length 27 [2021-12-15 14:05:43,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:43,862 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 192 transitions. [2021-12-15 14:05:43,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:43,863 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 192 transitions. [2021-12-15 14:05:43,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 14:05:43,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:43,863 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-15 14:05:43,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 14:05:44,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:05:44,064 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:44,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:44,064 INFO L85 PathProgramCache]: Analyzing trace with hash 14127103, now seen corresponding path program 1 times [2021-12-15 14:05:44,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:44,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705194253] [2021-12-15 14:05:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:44,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:44,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:44,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705194253] [2021-12-15 14:05:44,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705194253] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:05:44,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318760171] [2021-12-15 14:05:44,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:44,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:05:44,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:05:44,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:05:44,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 14:05:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:44,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-15 14:05:44,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:05:44,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 14:05:44,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 14:05:44,363 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:05:44,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-15 14:05:44,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 14:05:44,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 14:05:44,496 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 14:05:44,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-15 14:05:44,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-15 14:05:44,512 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:05:44,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-15 14:05:44,542 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:05:44,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-12-15 14:05:44,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-15 14:05:44,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:05:44,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-12-15 14:05:44,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:05:44,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-15 14:05:44,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:05:44,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-15 14:05:44,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:05:44,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 14:05:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:44,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:05:45,285 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:45,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 51 [2021-12-15 14:05:45,289 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:45,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 51 [2021-12-15 14:05:45,295 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:45,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 77 [2021-12-15 14:05:45,302 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:45,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 120 [2021-12-15 14:05:45,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 85 [2021-12-15 14:05:45,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 81 [2021-12-15 14:05:45,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 79 [2021-12-15 14:05:45,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:45,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318760171] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:05:45,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:05:45,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2021-12-15 14:05:45,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771296213] [2021-12-15 14:05:45,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:05:45,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-15 14:05:45,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:45,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-15 14:05:45,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=824, Unknown=7, NotChecked=0, Total=930 [2021-12-15 14:05:45,628 INFO L87 Difference]: Start difference. First operand 165 states and 192 transitions. Second operand has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:46,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:46,494 INFO L93 Difference]: Finished difference Result 229 states and 260 transitions. [2021-12-15 14:05:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-15 14:05:46,494 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-15 14:05:46,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:46,495 INFO L225 Difference]: With dead ends: 229 [2021-12-15 14:05:46,495 INFO L226 Difference]: Without dead ends: 229 [2021-12-15 14:05:46,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 33 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=279, Invalid=1520, Unknown=7, NotChecked=0, Total=1806 [2021-12-15 14:05:46,496 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 547 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 429 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:46,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 879 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 967 Invalid, 0 Unknown, 429 Unchecked, 0.4s Time] [2021-12-15 14:05:46,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-15 14:05:46,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 165. [2021-12-15 14:05:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 139 states have (on average 1.3741007194244603) internal successors, (191), 164 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 191 transitions. [2021-12-15 14:05:46,499 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 191 transitions. Word has length 27 [2021-12-15 14:05:46,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:46,500 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 191 transitions. [2021-12-15 14:05:46,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:46,500 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 191 transitions. [2021-12-15 14:05:46,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-15 14:05:46,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:46,500 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-15 14:05:46,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-15 14:05:46,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-15 14:05:46,711 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:46,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:46,712 INFO L85 PathProgramCache]: Analyzing trace with hash 408081261, now seen corresponding path program 1 times [2021-12-15 14:05:46,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:46,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134688771] [2021-12-15 14:05:46,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:46,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 14:05:46,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:46,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134688771] [2021-12-15 14:05:46,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134688771] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:05:46,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844372073] [2021-12-15 14:05:46,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:46,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:05:46,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:05:46,807 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:05:46,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 14:05:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:46,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-15 14:05:46,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:05:46,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-15 14:05:46,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-15 14:05:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 14:05:47,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:05:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-15 14:05:47,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844372073] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:05:47,157 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:05:47,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2021-12-15 14:05:47,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416286473] [2021-12-15 14:05:47,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:05:47,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-15 14:05:47,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-15 14:05:47,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-15 14:05:47,158 INFO L87 Difference]: Start difference. First operand 165 states and 191 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:47,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:47,650 INFO L93 Difference]: Finished difference Result 173 states and 192 transitions. [2021-12-15 14:05:47,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-15 14:05:47,651 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-15 14:05:47,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:47,652 INFO L225 Difference]: With dead ends: 173 [2021-12-15 14:05:47,652 INFO L226 Difference]: Without dead ends: 173 [2021-12-15 14:05:47,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=504, Unknown=0, NotChecked=0, Total=702 [2021-12-15 14:05:47,653 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 257 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:47,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 297 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 14:05:47,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-12-15 14:05:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 153. [2021-12-15 14:05:47,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 129 states have (on average 1.3488372093023255) internal successors, (174), 152 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:47,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2021-12-15 14:05:47,656 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 30 [2021-12-15 14:05:47,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:47,656 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2021-12-15 14:05:47,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:47,656 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2021-12-15 14:05:47,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-15 14:05:47,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:47,656 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-15 14:05:47,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-15 14:05:47,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-15 14:05:47,857 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:47,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:47,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2056569881, now seen corresponding path program 1 times [2021-12-15 14:05:47,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:47,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562280808] [2021-12-15 14:05:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:47,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:48,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:48,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:48,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562280808] [2021-12-15 14:05:48,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562280808] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:05:48,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573449395] [2021-12-15 14:05:48,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:48,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:05:48,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:05:48,028 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:05:48,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-15 14:05:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:48,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-15 14:05:48,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:05:48,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 14:05:48,277 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:05:48,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-15 14:05:48,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 14:05:48,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 14:05:48,452 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:05:48,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-15 14:05:48,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:05:48,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 14:05:48,481 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:05:48,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-12-15 14:05:48,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-15 14:05:48,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:05:48,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-15 14:05:48,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:05:48,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 14:05:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:48,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:05:49,134 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:49,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 49 [2021-12-15 14:05:49,138 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:49,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 49 [2021-12-15 14:05:49,144 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:49,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 75 [2021-12-15 14:05:49,155 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:49,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 116 [2021-12-15 14:05:49,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 81 [2021-12-15 14:05:49,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 77 [2021-12-15 14:05:49,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 75 [2021-12-15 14:05:49,661 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-15 14:05:49,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-15 14:05:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:49,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573449395] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:05:49,735 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:05:49,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2021-12-15 14:05:49,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061464969] [2021-12-15 14:05:49,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:05:49,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-15 14:05:49,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:49,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-15 14:05:49,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1119, Unknown=23, NotChecked=0, Total=1260 [2021-12-15 14:05:49,736 INFO L87 Difference]: Start difference. First operand 153 states and 174 transitions. Second operand has 36 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 36 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:50,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:50,686 INFO L93 Difference]: Finished difference Result 278 states and 307 transitions. [2021-12-15 14:05:50,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-15 14:05:50,687 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 36 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-15 14:05:50,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:50,687 INFO L225 Difference]: With dead ends: 278 [2021-12-15 14:05:50,687 INFO L226 Difference]: Without dead ends: 278 [2021-12-15 14:05:50,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=318, Invalid=2206, Unknown=26, NotChecked=0, Total=2550 [2021-12-15 14:05:50,689 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 416 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 732 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:50,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 1057 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1229 Invalid, 0 Unknown, 732 Unchecked, 0.5s Time] [2021-12-15 14:05:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-12-15 14:05:50,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 182. [2021-12-15 14:05:50,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 158 states have (on average 1.3164556962025316) internal successors, (208), 181 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:50,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 208 transitions. [2021-12-15 14:05:50,692 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 208 transitions. Word has length 31 [2021-12-15 14:05:50,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:50,693 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 208 transitions. [2021-12-15 14:05:50,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 36 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:50,693 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 208 transitions. [2021-12-15 14:05:50,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-15 14:05:50,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:50,693 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-15 14:05:50,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-15 14:05:50,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-15 14:05:50,900 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:50,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:50,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2056569880, now seen corresponding path program 1 times [2021-12-15 14:05:50,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:50,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921750690] [2021-12-15 14:05:50,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:50,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:51,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:51,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921750690] [2021-12-15 14:05:51,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921750690] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:05:51,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690020043] [2021-12-15 14:05:51,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:51,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:05:51,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:05:51,061 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:05:51,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-15 14:05:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:51,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-15 14:05:51,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:05:51,297 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-15 14:05:51,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-15 14:05:51,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 14:05:51,443 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:05:51,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-15 14:05:51,477 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:05:51,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-15 14:05:51,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:05:51,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-15 14:05:51,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:51,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:05:51,828 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:51,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2021-12-15 14:05:51,834 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:51,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2021-12-15 14:05:51,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-12-15 14:05:53,343 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-12-15 14:05:53,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 67 [2021-12-15 14:05:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:53,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690020043] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:05:53,469 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:05:53,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2021-12-15 14:05:53,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532402762] [2021-12-15 14:05:53,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:05:53,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-15 14:05:53,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:53,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-15 14:05:53,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=913, Unknown=9, NotChecked=0, Total=1056 [2021-12-15 14:05:53,471 INFO L87 Difference]: Start difference. First operand 182 states and 208 transitions. Second operand has 33 states, 32 states have (on average 2.5) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:53,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:53,886 INFO L93 Difference]: Finished difference Result 201 states and 225 transitions. [2021-12-15 14:05:53,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-15 14:05:53,886 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.5) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-15 14:05:53,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:53,887 INFO L225 Difference]: With dead ends: 201 [2021-12-15 14:05:53,887 INFO L226 Difference]: Without dead ends: 201 [2021-12-15 14:05:53,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=230, Invalid=1243, Unknown=9, NotChecked=0, Total=1482 [2021-12-15 14:05:53,888 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 284 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 712 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:53,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 851 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 809 Invalid, 0 Unknown, 712 Unchecked, 0.3s Time] [2021-12-15 14:05:53,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-15 14:05:53,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 181. [2021-12-15 14:05:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 157 states have (on average 1.3121019108280254) internal successors, (206), 180 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:53,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 206 transitions. [2021-12-15 14:05:53,892 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 206 transitions. Word has length 31 [2021-12-15 14:05:53,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:53,892 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 206 transitions. [2021-12-15 14:05:53,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.5) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:53,892 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 206 transitions. [2021-12-15 14:05:53,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-15 14:05:53,893 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:53,893 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] [2021-12-15 14:05:53,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-15 14:05:54,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:05:54,104 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:54,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:54,104 INFO L85 PathProgramCache]: Analyzing trace with hash 678653734, now seen corresponding path program 1 times [2021-12-15 14:05:54,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:54,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143676014] [2021-12-15 14:05:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:54,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:54,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:54,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:54,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143676014] [2021-12-15 14:05:54,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143676014] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:05:54,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663775118] [2021-12-15 14:05:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:54,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:05:54,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:05:54,180 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:05:54,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-15 14:05:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:54,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-15 14:05:54,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:05:54,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:54,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:05:54,345 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-15 14:05:54,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2021-12-15 14:05:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:54,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663775118] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:05:54,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:05:54,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2021-12-15 14:05:54,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038689584] [2021-12-15 14:05:54,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:05:54,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 14:05:54,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:54,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 14:05:54,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-15 14:05:54,373 INFO L87 Difference]: Start difference. First operand 181 states and 206 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:54,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:54,521 INFO L93 Difference]: Finished difference Result 238 states and 268 transitions. [2021-12-15 14:05:54,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 14:05:54,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-15 14:05:54,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:54,522 INFO L225 Difference]: With dead ends: 238 [2021-12-15 14:05:54,522 INFO L226 Difference]: Without dead ends: 238 [2021-12-15 14:05:54,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-15 14:05:54,523 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 435 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:54,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 105 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:05:54,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-12-15 14:05:54,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 184. [2021-12-15 14:05:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 161 states have (on average 1.3229813664596273) internal successors, (213), 183 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 213 transitions. [2021-12-15 14:05:54,526 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 213 transitions. Word has length 33 [2021-12-15 14:05:54,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:54,526 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 213 transitions. [2021-12-15 14:05:54,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:54,526 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 213 transitions. [2021-12-15 14:05:54,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-15 14:05:54,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:54,527 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] [2021-12-15 14:05:54,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-15 14:05:54,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:05:54,731 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:54,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:54,732 INFO L85 PathProgramCache]: Analyzing trace with hash 678653735, now seen corresponding path program 1 times [2021-12-15 14:05:54,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:54,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259543937] [2021-12-15 14:05:54,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:54,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:54,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:54,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259543937] [2021-12-15 14:05:54,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259543937] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:05:54,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946178242] [2021-12-15 14:05:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:54,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:05:54,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:05:54,850 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:05:54,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-15 14:05:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:54,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-15 14:05:54,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:05:55,061 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:05:55,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-15 14:05:55,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 14:05:55,180 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:05:55,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2021-12-15 14:05:55,209 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:05:55,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2021-12-15 14:05:55,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:05:55,275 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:55,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2021-12-15 14:05:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:55,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:05:55,382 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_108| Int) (v_ArrVal_972 (Array Int Int))) (or (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_108|) (not (= 0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_972) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_108|))) (< |v_ULTIMATE.start_main_~x~0#1.offset_108| 0))) is different from false [2021-12-15 14:05:55,403 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_108| Int) (v_ArrVal_972 (Array Int Int))) (or (not (= 0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_972) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_108|))) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_108|) (< |v_ULTIMATE.start_main_~x~0#1.offset_108| 0))) is different from false [2021-12-15 14:05:55,418 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_108| Int) (v_ArrVal_972 (Array Int Int))) (or (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_108|) (not (= 0 (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_972) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_108|))) (< |v_ULTIMATE.start_main_~x~0#1.offset_108| 0))) is different from false [2021-12-15 14:05:55,435 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:55,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-12-15 14:05:55,441 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:05:55,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 36 [2021-12-15 14:05:55,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-15 14:05:55,861 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-15 14:05:55,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-15 14:05:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:55,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946178242] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:05:55,923 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:05:55,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 14] total 30 [2021-12-15 14:05:55,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818553174] [2021-12-15 14:05:55,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:05:55,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-15 14:05:55,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:05:55,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-15 14:05:55,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=612, Unknown=3, NotChecked=156, Total=870 [2021-12-15 14:05:55,925 INFO L87 Difference]: Start difference. First operand 184 states and 213 transitions. Second operand has 30 states, 30 states have (on average 2.8) internal successors, (84), 30 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:56,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:05:56,715 INFO L93 Difference]: Finished difference Result 296 states and 341 transitions. [2021-12-15 14:05:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-15 14:05:56,715 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.8) internal successors, (84), 30 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-15 14:05:56,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:05:56,716 INFO L225 Difference]: With dead ends: 296 [2021-12-15 14:05:56,716 INFO L226 Difference]: Without dead ends: 296 [2021-12-15 14:05:56,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=244, Invalid=1568, Unknown=6, NotChecked=252, Total=2070 [2021-12-15 14:05:56,717 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 295 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 2061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 859 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 14:05:56,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 1129 Invalid, 2061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1156 Invalid, 0 Unknown, 859 Unchecked, 0.5s Time] [2021-12-15 14:05:56,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-12-15 14:05:56,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 201. [2021-12-15 14:05:56,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 178 states have (on average 1.3202247191011236) internal successors, (235), 200 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:56,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 235 transitions. [2021-12-15 14:05:56,721 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 235 transitions. Word has length 33 [2021-12-15 14:05:56,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:05:56,721 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 235 transitions. [2021-12-15 14:05:56,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.8) internal successors, (84), 30 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:05:56,721 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 235 transitions. [2021-12-15 14:05:56,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-15 14:05:56,721 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:05:56,722 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:05:56,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-15 14:05:56,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:05:56,922 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:05:56,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:05:56,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1865212554, now seen corresponding path program 2 times [2021-12-15 14:05:56,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:05:56,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566256316] [2021-12-15 14:05:56,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:05:56,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:05:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:05:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:57,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:05:57,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566256316] [2021-12-15 14:05:57,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566256316] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:05:57,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049886174] [2021-12-15 14:05:57,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 14:05:57,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:05:57,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:05:57,090 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:05:57,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-15 14:05:57,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 14:05:57,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 14:05:57,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-15 14:05:57,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:05:57,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 14:05:57,250 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:05:57,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-15 14:05:57,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 14:05:57,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 14:05:57,379 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-15 14:05:57,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2021-12-15 14:05:57,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:05:57,392 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-15 14:05:57,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2021-12-15 14:05:57,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:05:57,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:05:57,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:05:57,434 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-15 14:05:57,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 70 [2021-12-15 14:05:57,441 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-12-15 14:05:57,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 58 [2021-12-15 14:05:57,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:05:57,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:05:57,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:05:57,776 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-12-15 14:05:57,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 69 treesize of output 42 [2021-12-15 14:05:57,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:05:57,783 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-15 14:05:57,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 22 [2021-12-15 14:05:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:05:57,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:06:04,399 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:06:04,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 29229 treesize of output 26570 [2021-12-15 14:06:05,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:06:05,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:06:06,669 INFO L354 Elim1Store]: treesize reduction 624, result has 48.3 percent of original size [2021-12-15 14:06:06,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 15 new quantified variables, introduced 92 case distinctions, treesize of input 373358 treesize of output 348087 [2021-12-15 14:06:25,469 WARN L227 SmtUtils]: Spent 18.79s on a formula simplification. DAG size of input: 1719 DAG size of output: 1698 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-15 14:06:25,610 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:06:25,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 324055 treesize of output 324019 [2021-12-15 14:06:39,099 WARN L227 SmtUtils]: Spent 11.91s on a formula simplification. DAG size of input: 1717 DAG size of output: 1709 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-15 14:06:39,272 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-15 14:06:39,272 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-15 14:06:39,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-12-15 14:06:39,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954451616] [2021-12-15 14:06:39,272 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-15 14:06:39,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-15 14:06:39,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:06:39,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-15 14:06:39,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=955, Unknown=3, NotChecked=0, Total=1056 [2021-12-15 14:06:39,273 INFO L87 Difference]: Start difference. First operand 201 states and 235 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:06:39,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:06:39,930 INFO L93 Difference]: Finished difference Result 221 states and 252 transitions. [2021-12-15 14:06:39,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-15 14:06:39,930 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-15 14:06:39,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:06:39,931 INFO L225 Difference]: With dead ends: 221 [2021-12-15 14:06:39,931 INFO L226 Difference]: Without dead ends: 221 [2021-12-15 14:06:39,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=209, Invalid=2044, Unknown=3, NotChecked=0, Total=2256 [2021-12-15 14:06:39,932 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 158 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 14:06:39,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 636 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 14:06:39,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-15 14:06:39,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 195. [2021-12-15 14:06:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 172 states have (on average 1.313953488372093) internal successors, (226), 194 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:06:39,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 226 transitions. [2021-12-15 14:06:39,938 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 226 transitions. Word has length 33 [2021-12-15 14:06:39,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:06:39,939 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 226 transitions. [2021-12-15 14:06:39,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:06:39,939 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 226 transitions. [2021-12-15 14:06:39,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-15 14:06:39,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:06:39,939 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:06:39,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-15 14:06:40,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-15 14:06:40,152 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-12-15 14:06:40,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:06:40,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1732885686, now seen corresponding path program 3 times [2021-12-15 14:06:40,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:06:40,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740157353] [2021-12-15 14:06:40,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:06:40,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:06:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:06:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:06:40,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:06:40,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740157353] [2021-12-15 14:06:40,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740157353] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:06:40,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649542272] [2021-12-15 14:06:40,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-15 14:06:40,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:06:40,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:06:40,353 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:06:40,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-15 14:06:40,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-15 14:06:40,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 14:06:40,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-15 14:06:40,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:06:40,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 14:06:40,527 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:06:40,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-15 14:06:40,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 14:06:40,647 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:06:40,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-12-15 14:06:40,661 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 14:06:40,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-12-15 14:06:40,682 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:06:40,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-15 14:06:40,714 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-15 14:06:40,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2021-12-15 14:06:40,817 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-12-15 14:06:40,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2021-12-15 14:06:40,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-12-15 14:06:40,880 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-12-15 14:06:40,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 56 [2021-12-15 14:06:40,899 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-12-15 14:06:40,899 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-15 14:06:40,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-12-15 14:06:40,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194846974] [2021-12-15 14:06:40,900 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-15 14:06:40,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-15 14:06:40,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:06:40,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-15 14:06:40,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2021-12-15 14:06:40,901 INFO L87 Difference]: Start difference. First operand 195 states and 226 transitions. Second operand has 16 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:06:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 14:06:40,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2021-12-15 14:06:40,901 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:06:40,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:06:40,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-15 14:06:41,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-15 14:06:41,103 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@7c55c8a9 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 14:06:41,105 INFO L158 Benchmark]: Toolchain (without parser) took 68483.17ms. Allocated memory was 127.9MB in the beginning and 461.4MB in the end (delta: 333.4MB). Free memory was 95.7MB in the beginning and 378.9MB in the end (delta: -283.3MB). Peak memory consumption was 49.5MB. Max. memory is 16.1GB. [2021-12-15 14:06:41,106 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 77.6MB. Free memory was 35.3MB in the beginning and 35.2MB in the end (delta: 43.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:06:41,106 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.75ms. Allocated memory is still 127.9MB. Free memory was 95.7MB in the beginning and 95.6MB in the end (delta: 45.6kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 14:06:41,106 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.51ms. Allocated memory is still 127.9MB. Free memory was 95.6MB in the beginning and 93.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:06:41,106 INFO L158 Benchmark]: Boogie Preprocessor took 47.34ms. Allocated memory is still 127.9MB. Free memory was 93.5MB in the beginning and 91.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:06:41,106 INFO L158 Benchmark]: RCFGBuilder took 514.48ms. Allocated memory is still 127.9MB. Free memory was 91.4MB in the beginning and 72.3MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-15 14:06:41,106 INFO L158 Benchmark]: TraceAbstraction took 67488.29ms. Allocated memory was 127.9MB in the beginning and 461.4MB in the end (delta: 333.4MB). Free memory was 71.8MB in the beginning and 378.9MB in the end (delta: -307.1MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2021-12-15 14:06:41,107 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 77.6MB. Free memory was 35.3MB in the beginning and 35.2MB in the end (delta: 43.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.75ms. Allocated memory is still 127.9MB. Free memory was 95.7MB in the beginning and 95.6MB in the end (delta: 45.6kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.51ms. Allocated memory is still 127.9MB. Free memory was 95.6MB in the beginning and 93.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.34ms. Allocated memory is still 127.9MB. Free memory was 93.5MB in the beginning and 91.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 514.48ms. Allocated memory is still 127.9MB. Free memory was 91.4MB in the beginning and 72.3MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 67488.29ms. Allocated memory was 127.9MB in the beginning and 461.4MB in the end (delta: 333.4MB). Free memory was 71.8MB in the beginning and 378.9MB in the end (delta: -307.1MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@7c55c8a9 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@7c55c8a9: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 14:06:41,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/sll-reverse_simple.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7651578256dc791e0a036690d99e12094845a58f582fb99f9abee48c7c5dfba --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:06:42,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:06:42,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:06:42,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:06:42,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:06:42,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:06:42,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:06:42,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:06:42,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:06:42,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:06:42,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:06:42,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:06:42,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:06:42,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:06:42,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:06:42,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:06:42,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:06:42,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:06:42,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:06:42,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:06:42,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:06:42,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:06:42,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:06:42,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:06:42,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:06:42,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:06:42,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:06:42,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:06:42,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:06:42,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:06:42,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:06:42,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:06:42,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:06:42,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:06:42,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:06:42,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:06:42,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:06:42,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:06:42,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:06:42,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:06:42,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:06:42,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf