./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/sep05-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/reducercommutativity/sep05-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac50477087b7e2b9c80860ad42d4d46d99ddf32e797cee205c21d5ff44f08ec3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 09:41:08,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 09:41:08,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 09:41:08,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 09:41:08,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 09:41:08,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 09:41:08,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 09:41:08,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 09:41:08,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 09:41:08,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 09:41:08,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 09:41:08,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 09:41:08,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 09:41:08,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 09:41:08,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 09:41:08,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 09:41:08,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 09:41:08,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 09:41:08,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 09:41:08,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 09:41:08,669 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 09:41:08,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 09:41:08,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 09:41:08,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 09:41:08,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 09:41:08,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 09:41:08,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 09:41:08,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 09:41:08,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 09:41:08,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 09:41:08,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 09:41:08,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 09:41:08,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 09:41:08,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 09:41:08,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 09:41:08,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 09:41:08,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 09:41:08,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 09:41:08,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 09:41:08,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 09:41:08,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 09:41:08,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 09:41:08,680 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 09:41:08,693 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 09:41:08,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 09:41:08,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 09:41:08,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 09:41:08,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 09:41:08,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 09:41:08,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 09:41:08,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 09:41:08,699 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 09:41:08,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 09:41:08,700 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 09:41:08,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 09:41:08,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 09:41:08,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 09:41:08,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 09:41:08,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 09:41:08,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 09:41:08,701 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 09:41:08,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 09:41:08,702 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 09:41:08,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 09:41:08,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 09:41:08,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 09:41:08,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 09:41:08,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 09:41:08,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 09:41:08,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 09:41:08,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 09:41:08,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 09:41:08,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 09:41:08,704 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 09:41:08,705 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 09:41:08,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 09:41:08,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac50477087b7e2b9c80860ad42d4d46d99ddf32e797cee205c21d5ff44f08ec3 [2022-07-22 09:41:08,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 09:41:08,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 09:41:08,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 09:41:08,914 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 09:41:08,919 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 09:41:08,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sep05-1.i [2022-07-22 09:41:08,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6995fb33/79930e4290ea4418a3eea4f0ec9b4208/FLAG39b5850e6 [2022-07-22 09:41:09,319 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 09:41:09,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep05-1.i [2022-07-22 09:41:09,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6995fb33/79930e4290ea4418a3eea4f0ec9b4208/FLAG39b5850e6 [2022-07-22 09:41:09,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6995fb33/79930e4290ea4418a3eea4f0ec9b4208 [2022-07-22 09:41:09,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 09:41:09,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 09:41:09,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 09:41:09,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 09:41:09,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 09:41:09,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:41:09" (1/1) ... [2022-07-22 09:41:09,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8f444d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:09, skipping insertion in model container [2022-07-22 09:41:09,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:41:09" (1/1) ... [2022-07-22 09:41:09,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 09:41:09,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 09:41:09,497 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/reducercommutativity/sep05-1.i[1287,1300] [2022-07-22 09:41:09,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 09:41:09,507 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 09:41:09,539 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/reducercommutativity/sep05-1.i[1287,1300] [2022-07-22 09:41:09,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 09:41:09,551 INFO L208 MainTranslator]: Completed translation [2022-07-22 09:41:09,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:09 WrapperNode [2022-07-22 09:41:09,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 09:41:09,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 09:41:09,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 09:41:09,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 09:41:09,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:09" (1/1) ... [2022-07-22 09:41:09,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:09" (1/1) ... [2022-07-22 09:41:09,592 INFO L137 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-07-22 09:41:09,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 09:41:09,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 09:41:09,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 09:41:09,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 09:41:09,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:09" (1/1) ... [2022-07-22 09:41:09,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:09" (1/1) ... [2022-07-22 09:41:09,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:09" (1/1) ... [2022-07-22 09:41:09,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:09" (1/1) ... [2022-07-22 09:41:09,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:09" (1/1) ... [2022-07-22 09:41:09,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:09" (1/1) ... [2022-07-22 09:41:09,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:09" (1/1) ... [2022-07-22 09:41:09,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 09:41:09,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 09:41:09,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 09:41:09,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 09:41:09,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:09" (1/1) ... [2022-07-22 09:41:09,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 09:41:09,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:41:09,676 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) [2022-07-22 09:41:09,682 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 [2022-07-22 09:41:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 09:41:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 09:41:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 09:41:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 09:41:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 09:41:09,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 09:41:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 09:41:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 09:41:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2022-07-22 09:41:09,710 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2022-07-22 09:41:09,751 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 09:41:09,752 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 09:41:09,872 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 09:41:09,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 09:41:09,887 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-22 09:41:09,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:41:09 BoogieIcfgContainer [2022-07-22 09:41:09,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 09:41:09,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 09:41:09,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 09:41:09,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 09:41:09,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:41:09" (1/3) ... [2022-07-22 09:41:09,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504108a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:41:09, skipping insertion in model container [2022-07-22 09:41:09,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:41:09" (2/3) ... [2022-07-22 09:41:09,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504108a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:41:09, skipping insertion in model container [2022-07-22 09:41:09,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:41:09" (3/3) ... [2022-07-22 09:41:09,908 INFO L111 eAbstractionObserver]: Analyzing ICFG sep05-1.i [2022-07-22 09:41:09,917 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 09:41:09,917 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 09:41:09,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 09:41:09,961 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@62446354, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5995fbba [2022-07-22 09:41:09,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 09:41:09,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 09:41:09,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 09:41:09,970 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:41:09,970 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:41:09,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:41:09,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:41:09,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1312709850, now seen corresponding path program 1 times [2022-07-22 09:41:09,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:41:09,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500667497] [2022-07-22 09:41:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:41:09,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:41:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:10,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 09:41:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:10,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 09:41:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:10,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 09:41:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 09:41:10,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:41:10,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500667497] [2022-07-22 09:41:10,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500667497] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 09:41:10,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 09:41:10,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 09:41:10,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941371471] [2022-07-22 09:41:10,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 09:41:10,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 09:41:10,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:41:10,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 09:41:10,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 09:41:10,146 INFO L87 Difference]: Start difference. First operand has 27 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 09:41:10,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:41:10,179 INFO L93 Difference]: Finished difference Result 52 states and 73 transitions. [2022-07-22 09:41:10,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 09:41:10,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-07-22 09:41:10,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:41:10,192 INFO L225 Difference]: With dead ends: 52 [2022-07-22 09:41:10,193 INFO L226 Difference]: Without dead ends: 25 [2022-07-22 09:41:10,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 09:41:10,197 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:41:10,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:41:10,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-22 09:41:10,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-07-22 09:41:10,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 09:41:10,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-07-22 09:41:10,223 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 28 [2022-07-22 09:41:10,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:41:10,223 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-07-22 09:41:10,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 09:41:10,223 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-07-22 09:41:10,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-22 09:41:10,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:41:10,225 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:41:10,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 09:41:10,225 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:41:10,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:41:10,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1845794557, now seen corresponding path program 1 times [2022-07-22 09:41:10,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:41:10,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902561843] [2022-07-22 09:41:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:41:10,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:41:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:10,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 09:41:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:10,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 09:41:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:10,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 09:41:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:10,284 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 09:41:10,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:41:10,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902561843] [2022-07-22 09:41:10,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902561843] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:41:10,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114837425] [2022-07-22 09:41:10,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:41:10,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:10,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:41:10,292 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) [2022-07-22 09:41:10,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 09:41:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:10,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 09:41:10,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:41:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 09:41:10,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 09:41:10,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114837425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 09:41:10,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 09:41:10,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-22 09:41:10,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56027268] [2022-07-22 09:41:10,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 09:41:10,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 09:41:10,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:41:10,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 09:41:10,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 09:41:10,378 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 09:41:10,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:41:10,386 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2022-07-22 09:41:10,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 09:41:10,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-07-22 09:41:10,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:41:10,388 INFO L225 Difference]: With dead ends: 45 [2022-07-22 09:41:10,388 INFO L226 Difference]: Without dead ends: 27 [2022-07-22 09:41:10,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 09:41:10,389 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:41:10,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 50 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:41:10,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-22 09:41:10,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-07-22 09:41:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 09:41:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-07-22 09:41:10,394 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 30 [2022-07-22 09:41:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:41:10,394 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-07-22 09:41:10,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 09:41:10,394 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-07-22 09:41:10,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-22 09:41:10,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:41:10,395 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:41:10,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 09:41:10,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:10,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:41:10,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:41:10,612 INFO L85 PathProgramCache]: Analyzing trace with hash -701057785, now seen corresponding path program 1 times [2022-07-22 09:41:10,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:41:10,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121222478] [2022-07-22 09:41:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:41:10,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:41:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:10,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 09:41:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:10,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 09:41:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:10,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 09:41:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 09:41:10,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:41:10,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121222478] [2022-07-22 09:41:10,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121222478] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:41:10,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695259774] [2022-07-22 09:41:10,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:41:10,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:10,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:41:10,748 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) [2022-07-22 09:41:10,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 09:41:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:10,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 09:41:10,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:41:10,827 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 09:41:10,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 09:41:10,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695259774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 09:41:10,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 09:41:10,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-22 09:41:10,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447394503] [2022-07-22 09:41:10,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 09:41:10,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 09:41:10,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:41:10,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 09:41:10,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 09:41:10,829 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 09:41:10,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:41:10,840 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-07-22 09:41:10,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 09:41:10,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-07-22 09:41:10,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:41:10,841 INFO L225 Difference]: With dead ends: 41 [2022-07-22 09:41:10,841 INFO L226 Difference]: Without dead ends: 27 [2022-07-22 09:41:10,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 09:41:10,843 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:41:10,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 49 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:41:10,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-22 09:41:10,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-07-22 09:41:10,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 09:41:10,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-07-22 09:41:10,847 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 39 [2022-07-22 09:41:10,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:41:10,848 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-07-22 09:41:10,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 09:41:10,848 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-07-22 09:41:10,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 09:41:10,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:41:10,849 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:41:10,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 09:41:11,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-22 09:41:11,064 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:41:11,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:41:11,064 INFO L85 PathProgramCache]: Analyzing trace with hash -235909079, now seen corresponding path program 1 times [2022-07-22 09:41:11,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:41:11,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494655636] [2022-07-22 09:41:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:41:11,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:41:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:11,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 09:41:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:11,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 09:41:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 09:41:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 09:41:11,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:41:11,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494655636] [2022-07-22 09:41:11,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494655636] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:41:11,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271192370] [2022-07-22 09:41:11,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:41:11,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:11,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:41:11,143 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) [2022-07-22 09:41:11,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 09:41:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:11,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 09:41:11,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:41:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 09:41:11,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:41:11,247 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 09:41:11,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271192370] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 09:41:11,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 09:41:11,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-07-22 09:41:11,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515078783] [2022-07-22 09:41:11,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 09:41:11,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 09:41:11,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:41:11,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 09:41:11,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-22 09:41:11,249 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 09:41:11,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:41:11,280 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2022-07-22 09:41:11,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 09:41:11,281 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 41 [2022-07-22 09:41:11,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:41:11,282 INFO L225 Difference]: With dead ends: 58 [2022-07-22 09:41:11,282 INFO L226 Difference]: Without dead ends: 37 [2022-07-22 09:41:11,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-22 09:41:11,283 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:41:11,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 156 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:41:11,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-22 09:41:11,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-07-22 09:41:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 09:41:11,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-07-22 09:41:11,289 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 41 [2022-07-22 09:41:11,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:41:11,290 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-07-22 09:41:11,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 09:41:11,290 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-07-22 09:41:11,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-22 09:41:11,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:41:11,291 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:41:11,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 09:41:11,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:11,493 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:41:11,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:41:11,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1946429025, now seen corresponding path program 2 times [2022-07-22 09:41:11,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:41:11,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141010098] [2022-07-22 09:41:11,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:41:11,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:41:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:11,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 09:41:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:11,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 09:41:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:11,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 09:41:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:11,587 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-22 09:41:11,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:41:11,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141010098] [2022-07-22 09:41:11,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141010098] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:41:11,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516333758] [2022-07-22 09:41:11,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 09:41:11,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:11,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:41:11,589 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) [2022-07-22 09:41:11,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 09:41:11,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 09:41:11,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 09:41:11,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 09:41:11,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:41:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-22 09:41:11,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:41:11,721 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-22 09:41:11,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516333758] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 09:41:11,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 09:41:11,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 9 [2022-07-22 09:41:11,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011580497] [2022-07-22 09:41:11,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 09:41:11,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 09:41:11,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:41:11,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 09:41:11,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-22 09:41:11,728 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 09:41:11,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:41:11,766 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2022-07-22 09:41:11,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 09:41:11,767 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2022-07-22 09:41:11,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:41:11,769 INFO L225 Difference]: With dead ends: 64 [2022-07-22 09:41:11,769 INFO L226 Difference]: Without dead ends: 40 [2022-07-22 09:41:11,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-22 09:41:11,773 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:41:11,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:41:11,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-07-22 09:41:11,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-07-22 09:41:11,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 09:41:11,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2022-07-22 09:41:11,788 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 56 [2022-07-22 09:41:11,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:41:11,788 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2022-07-22 09:41:11,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 09:41:11,789 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2022-07-22 09:41:11,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-22 09:41:11,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:41:11,794 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:41:11,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 09:41:12,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:12,007 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:41:12,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:41:12,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1253498369, now seen corresponding path program 3 times [2022-07-22 09:41:12,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:41:12,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049354808] [2022-07-22 09:41:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:41:12,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:41:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:12,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 09:41:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:12,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 09:41:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:12,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 09:41:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:12,122 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-22 09:41:12,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:41:12,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049354808] [2022-07-22 09:41:12,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049354808] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:41:12,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178919117] [2022-07-22 09:41:12,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 09:41:12,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:12,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:41:12,124 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) [2022-07-22 09:41:12,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 09:41:12,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-22 09:41:12,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 09:41:12,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 09:41:12,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:41:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-22 09:41:12,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:41:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-22 09:41:12,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178919117] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 09:41:12,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 09:41:12,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-07-22 09:41:12,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587944546] [2022-07-22 09:41:12,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 09:41:12,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 09:41:12,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:41:12,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 09:41:12,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-22 09:41:12,233 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 09:41:12,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:41:12,248 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2022-07-22 09:41:12,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 09:41:12,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-07-22 09:41:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:41:12,249 INFO L225 Difference]: With dead ends: 73 [2022-07-22 09:41:12,249 INFO L226 Difference]: Without dead ends: 48 [2022-07-22 09:41:12,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-22 09:41:12,250 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 17 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:41:12,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 100 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:41:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-22 09:41:12,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-07-22 09:41:12,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.186046511627907) internal successors, (51), 43 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 09:41:12,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2022-07-22 09:41:12,263 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 60 [2022-07-22 09:41:12,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:41:12,263 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2022-07-22 09:41:12,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 09:41:12,264 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2022-07-22 09:41:12,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-22 09:41:12,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:41:12,265 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:41:12,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 09:41:12,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:12,476 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:41:12,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:41:12,476 INFO L85 PathProgramCache]: Analyzing trace with hash -156103101, now seen corresponding path program 4 times [2022-07-22 09:41:12,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:41:12,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647265232] [2022-07-22 09:41:12,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:41:12,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:41:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:12,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 09:41:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:12,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 09:41:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:12,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 09:41:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:12,632 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-07-22 09:41:12,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:41:12,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647265232] [2022-07-22 09:41:12,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647265232] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:41:12,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209474457] [2022-07-22 09:41:12,633 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 09:41:12,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:12,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:41:12,634 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) [2022-07-22 09:41:12,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 09:41:12,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 09:41:12,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 09:41:12,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 09:41:12,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:41:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-22 09:41:12,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:41:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-07-22 09:41:12,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209474457] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 09:41:12,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 09:41:12,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-07-22 09:41:12,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234946433] [2022-07-22 09:41:12,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 09:41:12,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 09:41:12,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:41:12,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 09:41:12,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-22 09:41:12,781 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 09:41:12,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:41:12,819 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2022-07-22 09:41:12,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 09:41:12,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 87 [2022-07-22 09:41:12,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:41:12,822 INFO L225 Difference]: With dead ends: 78 [2022-07-22 09:41:12,822 INFO L226 Difference]: Without dead ends: 52 [2022-07-22 09:41:12,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-22 09:41:12,825 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:41:12,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 95 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:41:12,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-22 09:41:12,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-07-22 09:41:12,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 09:41:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2022-07-22 09:41:12,831 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 87 [2022-07-22 09:41:12,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:41:12,832 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2022-07-22 09:41:12,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 09:41:12,832 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2022-07-22 09:41:12,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 09:41:12,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:41:12,836 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:41:12,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 09:41:13,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:13,039 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:41:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:41:13,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2081062919, now seen corresponding path program 5 times [2022-07-22 09:41:13,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:41:13,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618974595] [2022-07-22 09:41:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:41:13,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:41:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:13,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 09:41:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:13,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 09:41:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:13,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 09:41:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-07-22 09:41:13,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:41:13,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618974595] [2022-07-22 09:41:13,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618974595] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:41:13,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963421538] [2022-07-22 09:41:13,689 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 09:41:13,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:13,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:41:13,691 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) [2022-07-22 09:41:13,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 09:41:13,916 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-07-22 09:41:13,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 09:41:13,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-22 09:41:13,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:41:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-07-22 09:41:14,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:41:14,845 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 4 proven. 315 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-22 09:41:14,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963421538] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 09:41:14,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 09:41:14,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 25 [2022-07-22 09:41:14,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955060047] [2022-07-22 09:41:14,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 09:41:14,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 09:41:14,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:41:14,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 09:41:14,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2022-07-22 09:41:14,848 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 25 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 20 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-22 09:41:15,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:41:15,088 INFO L93 Difference]: Finished difference Result 147 states and 205 transitions. [2022-07-22 09:41:15,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 09:41:15,089 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 20 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 91 [2022-07-22 09:41:15,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:41:15,092 INFO L225 Difference]: With dead ends: 147 [2022-07-22 09:41:15,092 INFO L226 Difference]: Without dead ends: 143 [2022-07-22 09:41:15,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 176 SyntacticMatches, 13 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2022-07-22 09:41:15,093 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 47 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 09:41:15,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1215 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 09:41:15,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-07-22 09:41:15,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 108. [2022-07-22 09:41:15,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 100 states have (on average 1.26) internal successors, (126), 101 states have internal predecessors, (126), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-07-22 09:41:15,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 140 transitions. [2022-07-22 09:41:15,107 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 140 transitions. Word has length 91 [2022-07-22 09:41:15,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:41:15,108 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 140 transitions. [2022-07-22 09:41:15,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 20 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-22 09:41:15,108 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 140 transitions. [2022-07-22 09:41:15,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 09:41:15,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:41:15,109 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:41:15,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 09:41:15,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:15,327 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:41:15,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:41:15,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1533846007, now seen corresponding path program 1 times [2022-07-22 09:41:15,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:41:15,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862030707] [2022-07-22 09:41:15,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:41:15,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:41:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:15,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 09:41:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:15,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 09:41:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:15,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 09:41:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 89 proven. 264 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-22 09:41:15,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:41:15,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862030707] [2022-07-22 09:41:15,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862030707] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:41:15,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750699695] [2022-07-22 09:41:15,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:41:15,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:15,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:41:15,842 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) [2022-07-22 09:41:15,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 09:41:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:15,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-22 09:41:15,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:41:16,159 INFO L390 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 23 treesize of output 11 [2022-07-22 09:41:16,192 INFO L390 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 17 treesize of output 13 [2022-07-22 09:41:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 181 proven. 132 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-22 09:41:16,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:41:17,098 INFO L356 Elim1Store]: treesize reduction 4, result has 73.3 percent of original size [2022-07-22 09:41:17,098 INFO L390 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 23 [2022-07-22 09:41:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 191 proven. 120 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-22 09:41:17,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750699695] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 09:41:17,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 09:41:17,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 15] total 45 [2022-07-22 09:41:17,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061298747] [2022-07-22 09:41:17,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 09:41:17,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-22 09:41:17,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:41:17,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-22 09:41:17,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1826, Unknown=0, NotChecked=0, Total=1980 [2022-07-22 09:41:17,135 INFO L87 Difference]: Start difference. First operand 108 states and 140 transitions. Second operand has 45 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 42 states have internal predecessors, (125), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-07-22 09:41:19,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:41:19,049 INFO L93 Difference]: Finished difference Result 443 states and 648 transitions. [2022-07-22 09:41:19,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-07-22 09:41:19,050 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 42 states have internal predecessors, (125), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 91 [2022-07-22 09:41:19,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:41:19,052 INFO L225 Difference]: With dead ends: 443 [2022-07-22 09:41:19,052 INFO L226 Difference]: Without dead ends: 317 [2022-07-22 09:41:19,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 177 SyntacticMatches, 5 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1662 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=607, Invalid=6199, Unknown=0, NotChecked=0, Total=6806 [2022-07-22 09:41:19,055 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 188 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 508 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 09:41:19,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 558 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1053 Invalid, 0 Unknown, 508 Unchecked, 0.6s Time] [2022-07-22 09:41:19,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-07-22 09:41:19,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 269. [2022-07-22 09:41:19,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 249 states have (on average 1.3373493975903614) internal successors, (333), 254 states have internal predecessors, (333), 11 states have call successors, (11), 3 states have call predecessors, (11), 8 states have return successors, (68), 11 states have call predecessors, (68), 11 states have call successors, (68) [2022-07-22 09:41:19,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 412 transitions. [2022-07-22 09:41:19,078 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 412 transitions. Word has length 91 [2022-07-22 09:41:19,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:41:19,079 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 412 transitions. [2022-07-22 09:41:19,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 42 states have internal predecessors, (125), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-07-22 09:41:19,079 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 412 transitions. [2022-07-22 09:41:19,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 09:41:19,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:41:19,081 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:41:19,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 09:41:19,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-22 09:41:19,302 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:41:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:41:19,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1955738939, now seen corresponding path program 2 times [2022-07-22 09:41:19,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:41:19,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529694562] [2022-07-22 09:41:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:41:19,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:41:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:19,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 09:41:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:19,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 09:41:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:19,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 09:41:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 91 proven. 277 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 09:41:20,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:41:20,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529694562] [2022-07-22 09:41:20,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529694562] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:41:20,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633412499] [2022-07-22 09:41:20,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 09:41:20,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:20,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:41:20,047 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) [2022-07-22 09:41:20,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 09:41:20,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 09:41:20,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 09:41:20,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 75 conjunts are in the unsatisfiable core [2022-07-22 09:41:20,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:41:20,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:20,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:20,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:20,303 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 33 [2022-07-22 09:41:20,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:20,404 INFO L390 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 35 treesize of output 28 [2022-07-22 09:41:20,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:20,430 INFO L390 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 35 treesize of output 28 [2022-07-22 09:41:20,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:20,473 INFO L390 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 35 treesize of output 28 [2022-07-22 09:41:20,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:20,509 INFO L390 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 39 treesize of output 26 [2022-07-22 09:41:20,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:20,553 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 09:41:20,553 INFO L390 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 29 [2022-07-22 09:41:20,877 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 12 proven. 366 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 09:41:20,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:41:27,748 INFO L356 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2022-07-22 09:41:27,748 INFO L390 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 38 treesize of output 31 [2022-07-22 09:41:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 107 proven. 244 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-22 09:41:27,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633412499] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 09:41:27,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 09:41:27,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 24] total 59 [2022-07-22 09:41:27,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308221201] [2022-07-22 09:41:27,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 09:41:27,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-07-22 09:41:27,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:41:27,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-07-22 09:41:27,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=3173, Unknown=10, NotChecked=0, Total=3422 [2022-07-22 09:41:27,947 INFO L87 Difference]: Start difference. First operand 269 states and 412 transitions. Second operand has 59 states, 59 states have (on average 2.440677966101695) internal successors, (144), 58 states have internal predecessors, (144), 6 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2022-07-22 09:41:30,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:41:30,512 INFO L93 Difference]: Finished difference Result 956 states and 1525 transitions. [2022-07-22 09:41:30,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-22 09:41:30,512 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.440677966101695) internal successors, (144), 58 states have internal predecessors, (144), 6 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) Word has length 91 [2022-07-22 09:41:30,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:41:30,516 INFO L225 Difference]: With dead ends: 956 [2022-07-22 09:41:30,516 INFO L226 Difference]: Without dead ends: 672 [2022-07-22 09:41:30,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 169 SyntacticMatches, 16 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=704, Invalid=8216, Unknown=10, NotChecked=0, Total=8930 [2022-07-22 09:41:30,520 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 200 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 876 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 09:41:30,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1245 Invalid, 2645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1640 Invalid, 0 Unknown, 876 Unchecked, 0.9s Time] [2022-07-22 09:41:30,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-07-22 09:41:30,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 583. [2022-07-22 09:41:30,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 544 states have (on average 1.3474264705882353) internal successors, (733), 559 states have internal predecessors, (733), 17 states have call successors, (17), 6 states have call predecessors, (17), 21 states have return successors, (208), 17 states have call predecessors, (208), 17 states have call successors, (208) [2022-07-22 09:41:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 958 transitions. [2022-07-22 09:41:30,566 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 958 transitions. Word has length 91 [2022-07-22 09:41:30,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:41:30,566 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 958 transitions. [2022-07-22 09:41:30,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.440677966101695) internal successors, (144), 58 states have internal predecessors, (144), 6 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2022-07-22 09:41:30,567 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 958 transitions. [2022-07-22 09:41:30,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 09:41:30,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:41:30,571 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:41:30,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 09:41:30,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 09:41:30,783 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:41:30,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:41:30,784 INFO L85 PathProgramCache]: Analyzing trace with hash 801199241, now seen corresponding path program 3 times [2022-07-22 09:41:30,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:41:30,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949295078] [2022-07-22 09:41:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:41:30,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:41:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:31,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 09:41:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 09:41:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:31,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 09:41:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 180 proven. 190 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-22 09:41:31,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:41:31,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949295078] [2022-07-22 09:41:31,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949295078] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:41:31,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210308854] [2022-07-22 09:41:31,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 09:41:31,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:31,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:41:31,483 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) [2022-07-22 09:41:31,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 09:41:31,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-07-22 09:41:31,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 09:41:31,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 73 conjunts are in the unsatisfiable core [2022-07-22 09:41:31,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:41:31,755 INFO L390 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 15 treesize of output 11 [2022-07-22 09:41:31,761 INFO L390 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 15 treesize of output 11 [2022-07-22 09:41:31,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:31,809 INFO L390 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 16 treesize of output 17 [2022-07-22 09:41:32,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:32,665 INFO L390 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 [2022-07-22 09:41:32,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:32,685 INFO L390 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 29 treesize of output 24 [2022-07-22 09:41:32,724 INFO L356 Elim1Store]: treesize reduction 68, result has 29.2 percent of original size [2022-07-22 09:41:32,725 INFO L390 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 46 [2022-07-22 09:41:32,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:32,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:32,850 INFO L356 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2022-07-22 09:41:32,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 72 [2022-07-22 09:41:33,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:33,021 INFO L390 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 33 treesize of output 26 [2022-07-22 09:41:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 214 proven. 137 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-22 09:41:33,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:41:33,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210308854] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:41:33,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 09:41:33,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 30] total 50 [2022-07-22 09:41:33,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563772273] [2022-07-22 09:41:33,609 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 09:41:33,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-22 09:41:33,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:41:33,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-22 09:41:33,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2368, Unknown=0, NotChecked=0, Total=2550 [2022-07-22 09:41:33,610 INFO L87 Difference]: Start difference. First operand 583 states and 958 transitions. Second operand has 50 states, 50 states have (on average 2.2) internal successors, (110), 49 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 09:41:52,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:41:52,946 INFO L93 Difference]: Finished difference Result 2551 states and 4576 transitions. [2022-07-22 09:41:52,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2022-07-22 09:41:52,947 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.2) internal successors, (110), 49 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-22 09:41:52,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:41:52,964 INFO L225 Difference]: With dead ends: 2551 [2022-07-22 09:41:52,964 INFO L226 Difference]: Without dead ends: 2165 [2022-07-22 09:41:52,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 95 SyntacticMatches, 7 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16913 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=2878, Invalid=40157, Unknown=21, NotChecked=0, Total=43056 [2022-07-22 09:41:52,977 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 62 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 3125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1878 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 09:41:52,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 341 Invalid, 3125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1167 Invalid, 0 Unknown, 1878 Unchecked, 0.6s Time] [2022-07-22 09:41:52,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2022-07-22 09:41:53,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1626. [2022-07-22 09:41:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1552 states have (on average 1.4149484536082475) internal successors, (2196), 1590 states have internal predecessors, (2196), 25 states have call successors, (25), 10 states have call predecessors, (25), 48 states have return successors, (610), 25 states have call predecessors, (610), 25 states have call successors, (610) [2022-07-22 09:41:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2831 transitions. [2022-07-22 09:41:53,195 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2831 transitions. Word has length 91 [2022-07-22 09:41:53,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:41:53,196 INFO L495 AbstractCegarLoop]: Abstraction has 1626 states and 2831 transitions. [2022-07-22 09:41:53,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.2) internal successors, (110), 49 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 09:41:53,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2831 transitions. [2022-07-22 09:41:53,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 09:41:53,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:41:53,206 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:41:53,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 09:41:53,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 09:41:53,419 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:41:53,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:41:53,420 INFO L85 PathProgramCache]: Analyzing trace with hash 86918213, now seen corresponding path program 4 times [2022-07-22 09:41:53,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:41:53,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100475527] [2022-07-22 09:41:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:41:53,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:41:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:53,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 09:41:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:53,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 09:41:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:53,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 09:41:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:41:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 180 proven. 188 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 09:41:54,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:41:54,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100475527] [2022-07-22 09:41:54,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100475527] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:41:54,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432479680] [2022-07-22 09:41:54,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 09:41:54,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:41:54,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:41:54,082 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) [2022-07-22 09:41:54,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 09:41:54,185 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 09:41:54,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 09:41:54,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 82 conjunts are in the unsatisfiable core [2022-07-22 09:41:54,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:41:54,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:54,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:54,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:54,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 33 [2022-07-22 09:41:54,680 INFO L356 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-07-22 09:41:54,680 INFO L390 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 35 treesize of output 34 [2022-07-22 09:41:54,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:54,777 INFO L356 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-07-22 09:41:54,777 INFO L390 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 56 [2022-07-22 09:41:54,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:54,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:54,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:55,002 INFO L356 Elim1Store]: treesize reduction 183, result has 42.8 percent of original size [2022-07-22 09:41:55,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 105 treesize of output 184 [2022-07-22 09:41:55,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:55,687 INFO L390 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 37 treesize of output 30 [2022-07-22 09:41:55,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:41:55,712 INFO L390 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 33 treesize of output 26 [2022-07-22 09:41:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 6 proven. 382 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 09:41:55,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:42:25,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432479680] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:42:25,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 09:42:25,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 33] total 50 [2022-07-22 09:42:25,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283040647] [2022-07-22 09:42:25,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 09:42:25,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-22 09:42:25,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:42:25,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-22 09:42:25,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=3458, Unknown=23, NotChecked=0, Total=3782 [2022-07-22 09:42:25,522 INFO L87 Difference]: Start difference. First operand 1626 states and 2831 transitions. Second operand has 50 states, 50 states have (on average 2.38) internal successors, (119), 49 states have internal predecessors, (119), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-22 09:42:35,934 WARN L233 SmtUtils]: Spent 8.85s on a formula simplification. DAG size of input: 65 DAG size of output: 44 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 09:42:44,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:42:44,603 INFO L93 Difference]: Finished difference Result 4661 states and 7861 transitions. [2022-07-22 09:42:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-07-22 09:42:44,603 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.38) internal successors, (119), 49 states have internal predecessors, (119), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 91 [2022-07-22 09:42:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:42:44,619 INFO L225 Difference]: With dead ends: 4661 [2022-07-22 09:42:44,620 INFO L226 Difference]: Without dead ends: 2801 [2022-07-22 09:42:44,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 107 SyntacticMatches, 11 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 48.5s TimeCoverageRelationStatistics Valid=1054, Invalid=10913, Unknown=23, NotChecked=0, Total=11990 [2022-07-22 09:42:44,629 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 81 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1282 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 09:42:44,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 974 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1424 Invalid, 0 Unknown, 1282 Unchecked, 0.7s Time] [2022-07-22 09:42:44,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2022-07-22 09:42:44,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2400. [2022-07-22 09:42:44,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 2278 states have (on average 1.3928884986830554) internal successors, (3173), 2336 states have internal predecessors, (3173), 42 states have call successors, (42), 21 states have call predecessors, (42), 79 states have return successors, (998), 42 states have call predecessors, (998), 42 states have call successors, (998) [2022-07-22 09:42:44,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 4213 transitions. [2022-07-22 09:42:44,929 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 4213 transitions. Word has length 91 [2022-07-22 09:42:44,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:42:44,929 INFO L495 AbstractCegarLoop]: Abstraction has 2400 states and 4213 transitions. [2022-07-22 09:42:44,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.38) internal successors, (119), 49 states have internal predecessors, (119), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-22 09:42:44,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 4213 transitions. [2022-07-22 09:42:44,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 09:42:44,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:42:44,945 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:42:44,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 09:42:45,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 09:42:45,163 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:42:45,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:42:45,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1791202551, now seen corresponding path program 5 times [2022-07-22 09:42:45,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:42:45,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316953930] [2022-07-22 09:42:45,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:42:45,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:42:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:45,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 09:42:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:45,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 09:42:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:45,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 09:42:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 180 proven. 172 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 09:42:45,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:42:45,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316953930] [2022-07-22 09:42:45,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316953930] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:42:45,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173007234] [2022-07-22 09:42:45,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 09:42:45,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:42:45,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:42:45,681 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 09:42:45,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 09:42:45,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-07-22 09:42:45,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 09:42:45,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-22 09:42:45,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:42:45,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:42:45,934 INFO L390 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 16 treesize of output 17 [2022-07-22 09:42:46,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:42:46,039 INFO L390 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 50 treesize of output 31 [2022-07-22 09:42:46,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:42:46,104 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 09:42:46,104 INFO L390 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 34 [2022-07-22 09:42:46,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:42:46,142 INFO L390 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 [2022-07-22 09:42:46,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:42:46,175 INFO L390 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 [2022-07-22 09:42:46,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:42:46,187 INFO L390 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 29 treesize of output 24 [2022-07-22 09:42:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 186 proven. 154 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-22 09:42:46,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:42:46,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173007234] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:42:46,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 09:42:46,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 37 [2022-07-22 09:42:46,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799425602] [2022-07-22 09:42:46,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 09:42:46,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-22 09:42:46,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:42:46,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-22 09:42:46,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2022-07-22 09:42:46,696 INFO L87 Difference]: Start difference. First operand 2400 states and 4213 transitions. Second operand has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 35 states have internal predecessors, (89), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 09:42:48,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:42:48,611 INFO L93 Difference]: Finished difference Result 5016 states and 8957 transitions. [2022-07-22 09:42:48,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-22 09:42:48,612 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 35 states have internal predecessors, (89), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 91 [2022-07-22 09:42:48,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:42:48,629 INFO L225 Difference]: With dead ends: 5016 [2022-07-22 09:42:48,630 INFO L226 Difference]: Without dead ends: 2887 [2022-07-22 09:42:48,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 88 SyntacticMatches, 9 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1856 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=559, Invalid=4697, Unknown=0, NotChecked=0, Total=5256 [2022-07-22 09:42:48,645 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 80 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 587 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 09:42:48,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 455 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 860 Invalid, 0 Unknown, 587 Unchecked, 0.4s Time] [2022-07-22 09:42:48,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2022-07-22 09:42:48,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2831. [2022-07-22 09:42:48,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2831 states, 2671 states have (on average 1.355672032946462) internal successors, (3621), 2725 states have internal predecessors, (3621), 68 states have call successors, (68), 37 states have call predecessors, (68), 91 states have return successors, (1244), 68 states have call predecessors, (1244), 68 states have call successors, (1244) [2022-07-22 09:42:49,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 4933 transitions. [2022-07-22 09:42:49,003 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 4933 transitions. Word has length 91 [2022-07-22 09:42:49,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:42:49,003 INFO L495 AbstractCegarLoop]: Abstraction has 2831 states and 4933 transitions. [2022-07-22 09:42:49,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 35 states have internal predecessors, (89), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 09:42:49,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 4933 transitions. [2022-07-22 09:42:49,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 09:42:49,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:42:49,024 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:42:49,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 09:42:49,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 09:42:49,239 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:42:49,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:42:49,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1790257655, now seen corresponding path program 6 times [2022-07-22 09:42:49,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:42:49,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324529888] [2022-07-22 09:42:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:42:49,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:42:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:49,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 09:42:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:49,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 09:42:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:49,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 09:42:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 4 proven. 350 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-22 09:42:49,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:42:49,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324529888] [2022-07-22 09:42:49,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324529888] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:42:49,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118195209] [2022-07-22 09:42:49,671 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 09:42:49,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:42:49,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:42:49,672 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 09:42:49,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 09:42:49,762 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-07-22 09:42:49,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 09:42:49,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-22 09:42:49,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:42:49,775 INFO L390 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 15 treesize of output 11 [2022-07-22 09:42:49,974 INFO L356 Elim1Store]: treesize reduction 74, result has 18.7 percent of original size [2022-07-22 09:42:49,975 INFO L390 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 2 case distinctions, treesize of input 40 treesize of output 37 [2022-07-22 09:42:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 248 proven. 57 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-07-22 09:42:54,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:42:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 293 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-22 09:42:54,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118195209] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 09:42:54,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 09:42:54,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 13] total 40 [2022-07-22 09:42:54,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562978512] [2022-07-22 09:42:54,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 09:42:54,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-22 09:42:54,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:42:54,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-22 09:42:54,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1366, Unknown=2, NotChecked=0, Total=1560 [2022-07-22 09:42:54,984 INFO L87 Difference]: Start difference. First operand 2831 states and 4933 transitions. Second operand has 40 states, 40 states have (on average 2.6) internal successors, (104), 39 states have internal predecessors, (104), 5 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 09:45:22,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:45:22,133 INFO L93 Difference]: Finished difference Result 7170 states and 13655 transitions. [2022-07-22 09:45:22,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-07-22 09:45:22,134 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.6) internal successors, (104), 39 states have internal predecessors, (104), 5 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 91 [2022-07-22 09:45:22,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:45:22,163 INFO L225 Difference]: With dead ends: 7170 [2022-07-22 09:45:22,164 INFO L226 Difference]: Without dead ends: 4211 [2022-07-22 09:45:22,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 181 SyntacticMatches, 6 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1984 ImplicationChecksByTransitivity, 151.0s TimeCoverageRelationStatistics Valid=999, Invalid=7497, Unknown=60, NotChecked=0, Total=8556 [2022-07-22 09:45:22,187 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 107 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 319 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 09:45:22,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 280 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 711 Invalid, 0 Unknown, 319 Unchecked, 0.4s Time] [2022-07-22 09:45:22,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4211 states. [2022-07-22 09:45:22,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4211 to 2947. [2022-07-22 09:45:22,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2947 states, 2750 states have (on average 1.3381818181818181) internal successors, (3680), 2842 states have internal predecessors, (3680), 63 states have call successors, (63), 41 states have call predecessors, (63), 133 states have return successors, (1825), 63 states have call predecessors, (1825), 63 states have call successors, (1825) [2022-07-22 09:45:22,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2947 states to 2947 states and 5568 transitions. [2022-07-22 09:45:22,697 INFO L78 Accepts]: Start accepts. Automaton has 2947 states and 5568 transitions. Word has length 91 [2022-07-22 09:45:22,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:45:22,697 INFO L495 AbstractCegarLoop]: Abstraction has 2947 states and 5568 transitions. [2022-07-22 09:45:22,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.6) internal successors, (104), 39 states have internal predecessors, (104), 5 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 09:45:22,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2947 states and 5568 transitions. [2022-07-22 09:45:22,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 09:45:22,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:45:22,725 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:45:22,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 09:45:22,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 09:45:22,931 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:45:22,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:45:22,932 INFO L85 PathProgramCache]: Analyzing trace with hash 31675077, now seen corresponding path program 7 times [2022-07-22 09:45:22,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:45:22,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091575742] [2022-07-22 09:45:22,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:45:22,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:45:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:45:23,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 09:45:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:45:23,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 09:45:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:45:23,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 09:45:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:45:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-22 09:45:23,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:45:23,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091575742] [2022-07-22 09:45:23,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091575742] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:45:23,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669228404] [2022-07-22 09:45:23,378 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-22 09:45:23,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:45:23,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:45:23,379 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 09:45:23,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 09:45:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:45:23,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-22 09:45:23,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:45:23,676 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 09:45:23,677 INFO L390 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 39 treesize of output 32 [2022-07-22 09:45:23,713 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 09:45:23,713 INFO L390 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 39 treesize of output 32 [2022-07-22 09:45:23,754 INFO L356 Elim1Store]: treesize reduction 93, result has 12.3 percent of original size [2022-07-22 09:45:23,758 INFO L390 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 35 [2022-07-22 09:45:23,843 INFO L356 Elim1Store]: treesize reduction 66, result has 27.5 percent of original size [2022-07-22 09:45:23,844 INFO L390 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 50 [2022-07-22 09:45:23,889 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-22 09:45:23,889 INFO L390 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 37 treesize of output 30 [2022-07-22 09:45:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 187 proven. 180 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 09:45:34,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:45:36,399 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~2#1_59| Int)) (or (forall ((v_ArrVal_653 Int)) (let ((.cse0 (+ (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~2#1_59| 4) |c_ULTIMATE.start_main_~#x~0#1.offset|) v_ArrVal_653) (+ |c_ULTIMATE.start_main_~#x~0#1.offset| 8)) 1))) (<= .cse0 (* 2 (div .cse0 2))))) (not (<= (+ |c_ULTIMATE.start_main_~i~2#1| 1) |v_ULTIMATE.start_main_~i~2#1_59|)))) is different from false [2022-07-22 09:45:37,054 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_653 Int) (|v_ULTIMATE.start_main_~i~2#1_59| Int)) (or (let ((.cse0 (+ (select (store (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|)) (.cse2 (* |c_ULTIMATE.start_main_~i~2#1| 4))) (store .cse1 (+ .cse2 |c_ULTIMATE.start_main_~#x~0#1.offset|) (select .cse1 (+ .cse2 |c_ULTIMATE.start_main_~#x~0#1.offset| 4)))) (+ (* |v_ULTIMATE.start_main_~i~2#1_59| 4) |c_ULTIMATE.start_main_~#x~0#1.offset|) v_ArrVal_653) (+ |c_ULTIMATE.start_main_~#x~0#1.offset| 8)) 1))) (<= .cse0 (* 2 (div .cse0 2)))) (not (<= (+ |c_ULTIMATE.start_main_~i~2#1| 1) |v_ULTIMATE.start_main_~i~2#1_59|)))) is different from false [2022-07-22 09:45:37,694 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_653 Int) (|v_ULTIMATE.start_main_~i~2#1_59| Int)) (or (let ((.cse0 (+ (select (store (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|)) (.cse2 (* |c_ULTIMATE.start_main_~i~2#1| 4))) (store .cse1 (+ .cse2 |c_ULTIMATE.start_main_~#x~0#1.offset| 4) (select .cse1 (+ .cse2 |c_ULTIMATE.start_main_~#x~0#1.offset| 8)))) (+ (* |v_ULTIMATE.start_main_~i~2#1_59| 4) |c_ULTIMATE.start_main_~#x~0#1.offset|) v_ArrVal_653) (+ |c_ULTIMATE.start_main_~#x~0#1.offset| 8)) 1))) (<= .cse0 (* 2 (div .cse0 2)))) (not (<= (+ 2 |c_ULTIMATE.start_main_~i~2#1|) |v_ULTIMATE.start_main_~i~2#1_59|)))) is different from false